{"count":839,"next":"http://glycodata.org/api/gdd/glyco-properties/?format=json&page=31","previous":"http://glycodata.org/api/gdd/glyco-properties/?format=json&page=29","results":[{"id":581,"dataset":"cellulose","entity":"carboxymethyl cellulose","entity_group":"carboxymethyl cellulose (CMC)","entity_class":"cellulose derivative","property":"glass transition temperature","property_key":"Tg","value":"185.65","unit":"C","value_reported":"185.65","unit_reported":"C","method":"Experiment","method_detail":"DSC; solution-cast CMC film (CMC from oil palm empty fruit bunch); minor endotherm ~100 C from moisture removal noted","conditions":"DSC; solution-cast CMC film (CMC from oil palm empty fruit bunch); minor endotherm ~100 C from moisture removal noted","conditions_detail":"DSC; solution-cast CMC film (CMC from oil palm empty fruit bunch); minor endotherm ~100 C from moisture removal noted | test state: film, conditioned 23 C / 50% RH","doi":"10.30574/gscbps.2023.24.3.0386","source_url":"https://gsconlinepress.com/journals/gscbps/sites/default/files/GSCBPS-2023-0386.pdf","year":"2023","confidence":"high","comments":"\"Sample ... CMC ... Tg (Degree Celsius) 185.65 ... Tm (Degree Celsius) 338\"  — Pure CMC film (Table 4). Hygroscopic: minor endothermic moisture-removal peak ~100 C; films conditioned at 50% RH so some bound water present.  [Hoque M, Hossain MS, Hasan MN, Jubayer A, Aktaruzzaman M, 2023, confidence: high]"},{"id":582,"dataset":"cellulose","entity":"carboxymethyl cellulose","entity_group":"carboxymethyl cellulose (CMC)","entity_class":"cellulose derivative","property":"glass transition temperature","property_key":"Tg","value":"131.1","unit":"C","value_reported":"131.1","unit_reported":"C","method":"Experiment","method_detail":"DSC; hemicellulose-loaded CMC (H-CMC-B) film","conditions":"DSC; hemicellulose-loaded CMC (H-CMC-B) film","conditions_detail":"DSC; hemicellulose-loaded CMC (H-CMC-B) film | test state: film (H-CMC blend, ~30 wt% hemicellulose)","doi":"10.30574/gscbps.2023.24.3.0386","source_url":"https://gsconlinepress.com/journals/gscbps/sites/default/files/GSCBPS-2023-0386.pdf","year":"2023","confidence":"medium","comments":"\"Sample ... H-CMC-B ... Tg (Degree Celsius) 131.1 ... Tm (Degree Celsius) 336\"  — CMC blended with hemicellulose (H-CMC-B). Blend, not pure CMC; separate condition. Tg of H-CMC films reported 133-187 C across the series.  [Hoque M, Hossain MS, Hasan MN, Jubayer A, Aktaruzzaman M, 2023, confidence: medium]"},{"id":583,"dataset":"cellulose","entity":"hydroxyethyl cellulose","entity_group":"methyl/hydroxypropyl cellulose","entity_class":"cellulose derivative","property":"glass transition temperature","property_key":"Tg","value":"137.0","unit":"C","value_reported":"137","unit_reported":"C","method":"Experiment","method_detail":"DSC; temperature program -70 to 150 C (pure HEC component, Tg1)","conditions":"DSC; temperature program -70 to 150 C (pure HEC component, Tg1)","conditions_detail":"DSC; temperature program -70 to 150 C (pure HEC component, Tg1) | test state: film/biocomposite component","doi":"10.1038/s41598-025-23615-6","source_url":"https://www.nature.com/articles/s41598-025-23615-6","year":"2025","confidence":"high","comments":"\"Tg1 = 137 °C) and ENR (Tg2 = -50 °C)\"  — Pure HEC glass transition (Tg1) reported in DSC of HEC/epoxidized-natural-rubber biocomposites.  [Bourassi L, et al., 2025, confidence: high]"},{"id":584,"dataset":"cellulose","entity":"carboxymethyl cellulose acetate butyrate","entity_group":"cellulose acetate","entity_class":"cellulose derivative","property":"glass transition temperature","property_key":"Tg","value":"138.35","unit":"C","value_reported":"138.35","unit_reported":"C","method":"Experiment","method_detail":"DSC; heated to 600 C at 10 C/min in nitrogen; single Tg","conditions":"DSC; heated to 600 C at 10 C/min in nitrogen; single Tg","conditions_detail":"DSC; heated to 600 C at 10 C/min in nitrogen; single Tg | heating rate (K/min): 10 | test state: dry (glassy thermoplastic) | DS: 0.45","doi":"10.35812/CelluloseChemTechnol.2019.53.66","source_url":"https://www.cellulosechemtechnol.ro/pdf/CCT7-8(2019)/p.667-675.pdf","year":"2019","confidence":"high","comments":"\"The DSC curves showed that CMCAB is a glassy thermoplastic cellulose derivative, with a glass transition temperature (Tg) of 138.35 °C.\"  — CMCAB is a mixed ester of CMC (ester derivative). DS of carboxymethyl 0.45. From sugarcane bagasse cellulose. Initial moisture-loss endotherm at 46.2 C (hygroscopic).  [El-Sakhawy M, Tohamy HS, Salama A, Kamel S, 2019, confidence: high]"},{"id":585,"dataset":"cellulose","entity":"dialcohol cellulose","entity_group":"regenerated cellulose (other)","entity_class":"cellulose derivative","property":"glass transition temperature","property_key":"Tg","value":"66.0","unit":"C","value_reported":"23-109","unit_reported":"C","method":"Experiment","method_detail":"DSC after pre-drying step; series of dialcohol celluloses from periodate-oxidized/borohydride-reduced softwood kraft pulp; Tg depends on initial degree of oxidation (DO 8-80%); Mw > 30 kDa","conditions":"DSC after pre-drying step; series of dialcohol celluloses from periodate-oxidized/borohydride-reduced softwood kraft pulp; Tg depends on initial degree of oxidation (DO 8-80%); Mw > 30 kDa","conditions_detail":"DSC after pre-drying step; series of dialcohol celluloses from periodate-oxidized/borohydride-reduced softwood kraft pulp; Tg depends on initial degree of oxidation (DO 8-80%); Mw > 30 kDa | test state: dry | water (wt%): 0","doi":"10.1002/cssc.202300791","source_url":"https://doi.org/10.1002/cssc.202300791","year":"2023","confidence":"high","comments":"\"the Tg of dialcohol cellulose is highly dependent on the initial DO of DAC, with Tg values ranging from 23 to 109 °C\"  — Range across degree-of-oxidation series (DO 8-80%). DSC done after a pre-drying step to remove plasticizing residual water (water lowers Tg). Below DO ~26% no glassy Tg observed (too crystalline).  [Simon J, Schlapp-Hackl I, Sapkota J, et al., 2023, confidence: high]"},{"id":586,"dataset":"cellulose","entity":"dialcohol cellulose","entity_group":"regenerated cellulose (other)","entity_class":"cellulose derivative","property":"glass transition temperature","property_key":"Tg","value":"94.0","unit":"C","value_reported":"94","unit_reported":"C","method":"Experiment","method_detail":"DSC after pre-drying; dialcohol cellulose with initial degree of oxidation 39%, before cryo-milling","conditions":"DSC after pre-drying; dialcohol cellulose with initial degree of oxidation 39%, before cryo-milling","conditions_detail":"DSC after pre-drying; dialcohol cellulose with initial degree of oxidation 39%, before cryo-milling | test state: dry | water (wt%): 0","doi":"10.1002/cssc.202300791","source_url":"https://doi.org/10.1002/cssc.202300791","year":"2023","confidence":"high","comments":"\"The glass transition temperature (Tg) decreased significantly from 94 to 42 °C as a consequence of the milling.\"  — DO 39% dialcohol cellulose, unmilled. Cryo-milling lowered Tg to 42 C (molecular-weight reduction); the 42 C value is a separate row.  [Simon J, Schlapp-Hackl I, Sapkota J, et al., 2023, confidence: high]"},{"id":587,"dataset":"cellulose","entity":"dialcohol cellulose","entity_group":"regenerated cellulose (other)","entity_class":"cellulose derivative","property":"glass transition temperature","property_key":"Tg","value":"42.0","unit":"C","value_reported":"42","unit_reported":"C","method":"Experiment","method_detail":"DSC after pre-drying; dialcohol cellulose (initial DO 39%) after 2 h cryo-milling (reduced Mw)","conditions":"DSC after pre-drying; dialcohol cellulose (initial DO 39%) after 2 h cryo-milling (reduced Mw)","conditions_detail":"DSC after pre-drying; dialcohol cellulose (initial DO 39%) after 2 h cryo-milling (reduced Mw) | test state: dry | water (wt%): 0","doi":"10.1002/cssc.202300791","source_url":"https://doi.org/10.1002/cssc.202300791","year":"2023","confidence":"high","comments":"\"The glass transition temperature (Tg) decreased significantly from 94 to 42 °C as a consequence of the milling.\"  — DO 39% dialcohol cellulose after 2 h cryo-milling; Tg drop attributed to molecular-weight reduction.  [Simon J, Schlapp-Hackl I, Sapkota J, et al., 2023, confidence: high]"},{"id":588,"dataset":"cellulose","entity":"cellulose (amorphous, native/non-crystalline domains)","entity_group":"cellulose (generic)","entity_class":"native cellulose","property":"glass transition temperature","property_key":"Tg","value":"221.85","unit":"C","value_reported":"490-500","unit_reported":"K","method":"Review","method_detail":"primary alpha1 glass transition; indirect methods (extrapolation of plasticized-sample Tg to zero plasticizer; DP extrapolation; Tg/Tm=0.66 rule)","conditions":"primary alpha1 glass transition; indirect methods (extrapolation of plasticized-sample Tg to zero plasticizer; DP extrapolation; Tg/Tm=0.66 rule)","conditions_detail":"primary alpha1 glass transition; indirect methods (extrapolation of plasticized-sample Tg to zero plasticizer; DP extrapolation; Tg/Tm=0.66 rule) | test state: dry | water (wt%): 0","doi":"10.30958/ajs.3-4-4","source_url":"https://www.athensjournals.gr/sciences/2016-3-4-4-Ioelovich.pdf","year":"2016","confidence":"low","comments":"\"the following primary glass temperature of cellulose was obtained: Tg1 ~ 490-500 K (Table 1).\"  — Estimate/extrapolation; direct measurement impossible because cellulose thermally decomposes before Tg1. Primary alpha1 transition of dry cellulose.  [Ioelovich M, 2016, confidence: low]"},{"id":589,"dataset":"cellulose","entity":"cellulose (amorphous, non-crystalline domains)","entity_group":"cellulose (generic)","entity_class":"native cellulose","property":"glass transition temperature","property_key":"Tg","value":"126.85","unit":"C","value_reported":"390-410","unit_reported":"K","method":"Review","method_detail":"secondary alpha2 glass transition; dynamic methods, dilatometry, thermomechanics, calorimetry","conditions":"secondary alpha2 glass transition; dynamic methods, dilatometry, thermomechanics, calorimetry","conditions_detail":"secondary alpha2 glass transition; dynamic methods, dilatometry, thermomechanics, calorimetry | test state: dry | water (wt%): 0","doi":"10.30958/ajs.3-4-4","source_url":"https://www.athensjournals.gr/sciences/2016-3-4-4-Ioelovich.pdf","year":"2016","confidence":"medium","comments":"\"Below Tg1, at the temperatures 390-410 K, the alpha2-relaxation transition was discovered by various experimental methods ... most researchers attribute this transition to a secondary glass transition\"  — Secondary (alpha2) glass transition of dry cellulose, 390-410 K; observed experimentally for dry samples by several methods.  [Ioelovich M, 2016, confidence: medium]"},{"id":590,"dataset":"cellulose","entity":"cellulose (amorphous)","entity_group":"cellulose (generic)","entity_class":"native cellulose","property":"glass transition temperature","property_key":"Tg","value":"134.85","unit":"C","value_reported":"408","unit_reported":"K","method":"Model","method_detail":"Tg of dry cellulose back-calculated from experimental Tg of wet samples via inverse-mixing (Fox-type) equation using Tg,water=136 K; averaged over W_NCD=0.1-0.35","conditions":"Tg of dry cellulose back-calculated from experimental Tg of wet samples via inverse-mixing (Fox-type) equation using Tg,water=136 K; averaged over W_NCD=0.1-0.35","conditions_detail":"Tg of dry cellulose back-calculated from experimental Tg of wet samples via inverse-mixing (Fox-type) equation using Tg,water=136 K; averaged over W_NCD=0.1-0.35 | test state: dry | water (wt%): 0","doi":"10.30958/ajs.3-4-4","source_url":"https://www.athensjournals.gr/sciences/2016-3-4-4-Ioelovich.pdf","year":"2016","confidence":"low","comments":"\"The calculations showed that the real Tg,c of dry cellulose is about 408 K, i.e. it is the temperature of secondary alpha2 glass transition of dry cellulose (Table 3).\"  — Calculated (not directly measured) dry-cellulose Tg ~408 K, derived from wet-sample data; identified with the alpha2 transition. Cellulose degrades before direct Tg measurement.  [Ioelovich M, 2016, confidence: low]"},{"id":591,"dataset":"cellulose","entity":"cellulose (amorphous)","entity_group":"cellulose (generic)","entity_class":"native cellulose","property":"glass transition temperature","property_key":"Tg","value":"219.85","unit":"C","value_reported":"493","unit_reported":"K","method":"Model","method_detail":"Tg of dry amorphous cellulose assumed/used in Kaelbe, Couchman and Fox plasticization equations (water Tg=136 K) to fit wet-sample data","conditions":"Tg of dry amorphous cellulose assumed/used in Kaelbe, Couchman and Fox plasticization equations (water Tg=136 K) to fit wet-sample data","conditions_detail":"Tg of dry amorphous cellulose assumed/used in Kaelbe, Couchman and Fox plasticization equations (water Tg=136 K) to fit wet-sample data | test state: dry | water (wt%): 0","doi":"10.30958/ajs.3-4-4","source_url":"https://www.athensjournals.gr/sciences/2016-3-4-4-Ioelovich.pdf","year":"2016","confidence":"low","comments":"\"assuming that the glass transition temperature of dry polymer is 493 K and for the water is 136 K (Figure 7).\"  — 493 K is the assumed dry-cellulose Tg (primary alpha1) used in mixing-rule models; estimate consistent with 490-500 K range, not a direct measurement.  [Ioelovich M, 2016, confidence: low]"},{"id":592,"dataset":"cellulose","entity":"cellulose (dry, primary alpha1 transition)","entity_group":"cellulose (generic)","entity_class":"native cellulose","property":"glass transition temperature","property_key":"Tg","value":"225.0","unit":"C","value_reported":"220-230","unit_reported":"C","method":"Review","method_detail":"stated primary alpha1 glass transition of dry cellulose; contrasted with measured wet-sample Tg (-50 to 80 C)","conditions":"stated primary alpha1 glass transition of dry cellulose; contrasted with measured wet-sample Tg (-50 to 80 C)","conditions_detail":"stated primary alpha1 glass transition of dry cellulose; contrasted with measured wet-sample Tg (-50 to 80 C) | test state: dry | water (wt%): 0","doi":"10.30958/ajs.3-4-4","source_url":"https://www.athensjournals.gr/sciences/2016-3-4-4-Ioelovich.pdf","year":"2016","confidence":"low","comments":"\"all the experimental Tg are obtained in the temperature range -50 to 80°C (223-353 K), i.e. far off 220-230°C (493-503 K), attributed to the temperature of primary alpha1 glass transition of dry cellulose.\"  — Primary dry-cellulose Tg ~220-230 C (493-503 K, estimate); measured wet-sample Tg fall in -50 to 80 C depending on hydration.  [Ioelovich M, 2016, confidence: low]"},{"id":593,"dataset":"cellulose","entity":"cellulose (ball-milled amorphous)","entity_group":"cellulose (generic)","entity_class":"native cellulose","property":"glass transition temperature","property_key":"Tg","value":"204.85","unit":"C","value_reported":"478","unit_reported":"K","method":"Model","method_detail":"DMA pocket technique; Tg vs water content fitted to Couchman-Karasz relationship and extrapolated to dry (0% water)","conditions":"DMA pocket technique; Tg vs water content fitted to Couchman-Karasz relationship and extrapolated to dry (0% water)","conditions_detail":"DMA pocket technique; Tg vs water content fitted to Couchman-Karasz relationship and extrapolated to dry (0% water) | test state: dry | water (wt%): 0","doi":"10.1007/s10570-010-9425-7","source_url":"https://doi.org/10.1007/s10570-010-9425-7","year":"2010","confidence":"medium","comments":"\"Fitting the data to a Couchman-Karasz relationship predicted a value for Tg of the dry cellulose of approximately 478 K, which was similar to values previously reported for other dry polysaccharides.\"  — Dry-cellulose Tg (~478 K) extrapolated from water-plasticized DMA data (water range 5-42% db); no clear calorimetric Tg observable directly. Pulp = eucalyptus/softwood, ball-milled (amorphized).  [Paes SS, Sun S, MacNaughtan W, Ibbett R, Ganster J, Foster TJ, Mitchell JR, 2010, confidence: medium]"},{"id":594,"dataset":"cellulose","entity":"cellulose (amorphous region, isolated)","entity_group":"cellulose (generic)","entity_class":"native cellulose","property":"glass transition temperature","property_key":"Tg","value":"225.0","unit":"C","value_reported":"200-250","unit_reported":"C","method":"Review","method_detail":"dry amorphous-cellulose glass transition range citing Back & Salmen 1982; DMA/thermal softening of wood components","conditions":"dry amorphous-cellulose glass transition range citing Back & Salmen 1982; DMA/thermal softening of wood components","conditions_detail":"dry amorphous-cellulose glass transition range citing Back & Salmen 1982; DMA/thermal softening of wood components | test state: dry | water (wt%): 0","doi":"10.15376/biores.6.2.2125-2134","source_url":"https://doi.org/10.15376/biores.6.2.2125-2134","year":"2011","confidence":"medium","comments":"\"When dry, the differences in glass transition temperature are not huge: 200 to 250 °C for the amorphous region of cellulose ... At the water-saturated condition, the Tg of isolated amorphous cellulose and of hemicelluloses decrease to subambient temperatures (Back and Salmén 1982).\"  — Canonical dry amorphous-cellulose Tg range 200-250 C (Back & Salmen 1982); at water saturation Tg drops to subambient. Compilation/secondary citation.  [Horvath B, Peralta PN, Frazier CE, Peszlen I, 2011, confidence: medium]"},{"id":595,"dataset":"cellulose","entity":"cellulose (amorphous region of paper)","entity_group":"cellulose (generic)","entity_class":"native cellulose","property":"glass transition temperature","property_key":"Tg","value":"200.0","unit":"C","value_reported":"200","unit_reported":"C","method":"Review","method_detail":"alpha relaxation = glass transition of amorphous cellulose regions; dynamic mechanical, peak ~200 C at 1 Hz; activation energy >100 kcal/mol; strongly plasticized by water","conditions":"alpha relaxation = glass transition of amorphous cellulose regions; dynamic mechanical, peak ~200 C at 1 Hz; activation energy >100 kcal/mol; strongly plasticized by water","conditions_detail":"alpha relaxation = glass transition of amorphous cellulose regions; dynamic mechanical, peak ~200 C at 1 Hz; activation energy >100 kcal/mol; strongly plasticized by water | test state: dry | water (wt%): 0","doi":"10.15376/frc.1993.1.1","source_url":"https://doi.org/10.15376/frc.1993.1.1","year":"1993","confidence":"medium","comments":"\"The third transition is the alpha relaxation. This is the glass transition in the amorphous regions of the cellulose. The activation energy is large (over 100 kcal/mol), and the peak of the relaxation would be at about 200°C at 1 Hz. It is very easily plasticized by water.\"  — Glass (alpha) transition of dry amorphous cellulose ~200 C at 1 Hz; review. Easily plasticized (lowered) by water.  [Baum GA, 1993, confidence: medium]"},{"id":596,"dataset":"cellulose","entity":"cellulose (amorphous)","entity_group":"cellulose (generic)","entity_class":"native cellulose","property":"glass transition temperature","property_key":"Tg","value":"62.85","unit":"C","value_reported":"336","unit_reported":"K","method":"Simulation (MD)","method_detail":"NPT-MD, ReaxFF reactive force field; Tg from intersection of two linear fits of specific volume vs temperature over 250-450 K; dry, no water","conditions":"NPT-MD, ReaxFF reactive force field; Tg from intersection of two linear fits of specific volume vs temperature over 250-450 K; dry, no water","conditions_detail":"NPT-MD, ReaxFF reactive force field; Tg from intersection of two linear fits of specific volume vs temperature over 250-450 K; dry, no water | test state: dry | water (wt%): 0","doi":"10.4028/www.scientific.net/AMM.214.7","source_url":"https://doi.org/10.4028/www.scientific.net/AMM.214.7","year":"2012","confidence":"medium","comments":"\"The intersection of the two linear trend lines fitted to the ends of the data gives an estimate of the glass transition temperature. The calculated values 336 K are closer to those calculated by other groups using molecular dynamics simulations with different force field\"  — MD (ReaxFF) Tg = 336 K for dry amorphous cellulose. Authors note MD nanosecond cooling rates tend to overestimate Tg vs DSC. Simulation, not experimental.  [Zhang XM, Tschopp MA, Shi SQ, Cao J, 2012, confidence: medium]"},{"id":597,"dataset":"cellulose","entity":"cellulose (amorphous)","entity_group":"cellulose (generic)","entity_class":"native cellulose","property":"glass transition temperature","property_key":"Tg","value":"150.85","unit":"C","value_reported":"424","unit_reported":"K","method":"Simulation (MD)","method_detail":"MD with COMPASS force field; Tg from specific-volume/temperature; dry (0% water). Also 432/496/422/381 K at 2/4/6/8 wt% water","conditions":"MD with COMPASS force field; Tg from specific-volume/temperature; dry (0% water). Also 432/496/422/381 K at 2/4/6/8 wt% water","conditions_detail":"MD with COMPASS force field; Tg from specific-volume/temperature; dry (0% water). Also 432/496/422/381 K at 2/4/6/8 wt% water | test state: dry | water (wt%): 0","doi":"10.1088/2053-1591/acaa8c","source_url":"https://doi.org/10.1088/2053-1591/acaa8c","year":"2022","confidence":"medium","comments":"\"when the water content was 0%, 2%, 4%, 6%, and 8%, the glass transition temperature values of the simulated system were 424, 432, 496, 422, and 381 K\"  — MD (COMPASS). Dry (0% water) Tg = 424 K; non-monotonic with water (peak 496 K at 4%). Simulation, not experimental.  [Jiang K, Yan Z, Fang W, Zhang Y, 2022, confidence: medium]"},{"id":598,"dataset":"cellulose","entity":"cotton cellulose fiber","entity_group":"cotton","entity_class":"native cellulose","property":"glass transition temperature","property_key":"Tg","value":"190.0","unit":"C","value_reported":"160-220","unit_reported":"C","method":"Experiment","method_detail":"Glass transition inferred from temperature dependence of single-fiber tenacity distribution (finite mixture / mixed Weibull model), supported by XRD and TGA","conditions":"Glass transition inferred from temperature dependence of single-fiber tenacity distribution (finite mixture / mixed Weibull model), supported by XRD and TGA","conditions_detail":"Glass transition inferred from temperature dependence of single-fiber tenacity distribution (finite mixture / mixed Weibull model), supported by XRD and TGA | test state: cotton fiber (semicrystalline cellulose)","doi":"10.1021/acssuschemeng.7b04919","source_url":"https://doi.org/10.1021/acssuschemeng.7b04919","year":"2018","confidence":"medium","comments":"\"cotton fiber underwent the following sequence of transitions: glass transition at 160-220 °C, dehydration at 240-260 °C, and chain scission at 280-300 °C.\"  — Native cotton cellulose fiber; Tg range inferred from mechanical (tenacity) transition modeling, not direct calorimetry. Dehydration occurs at higher T (240-260 C).  [Nam S, Alhassan D, Condon B, et al., 2018, confidence: medium]"},{"id":599,"dataset":"cellulose","entity":"regenerated cellulose fiber (viscose rayon)","entity_group":"viscose/rayon","entity_class":"regenerated cellulose","property":"glass transition temperature","property_key":"Tg","value":"278.85","unit":"C","value_reported":"552","unit_reported":"K","method":"Experiment","method_detail":"DMA; Tg of dry fiber from tan delta; water plasticizes Tg to room temperature at water regain ~78%","conditions":"DMA; Tg of dry fiber from tan delta; water plasticizes Tg to room temperature at water regain ~78%","conditions_detail":"DMA; Tg of dry fiber from tan delta; water plasticizes Tg to room temperature at water regain ~78% | test state: dry | water (wt%): 0","doi":"10.1016/j.carbpol.2019.115663","source_url":"https://doi.org/10.1016/j.carbpol.2019.115663","year":"2020","confidence":"medium","comments":"\"The glass transition temperature (Tg) of dry regenerated cellulose is 552 K for rayon, 523 K for cupra, and 513 K for lyocell, which decreases to room temperature by water\"  — Dry viscose rayon Tg = 552 K (DMA). Water strong plasticizer: Tg falls to room temperature at ~78% water regain. Cellulose II.  [Okugawa A, Sakaino M, Yuguchi Y, et al., 2020, confidence: medium]"},{"id":600,"dataset":"cellulose","entity":"regenerated cellulose fiber (cupra / cuprammonium)","entity_group":"viscose/rayon","entity_class":"regenerated cellulose","property":"glass transition temperature","property_key":"Tg","value":"249.85","unit":"C","value_reported":"523","unit_reported":"K","method":"Experiment","method_detail":"DMA; Tg of dry fiber from tan delta; water plasticizes Tg to room temperature at water regain ~63%","conditions":"DMA; Tg of dry fiber from tan delta; water plasticizes Tg to room temperature at water regain ~63%","conditions_detail":"DMA; Tg of dry fiber from tan delta; water plasticizes Tg to room temperature at water regain ~63% | test state: dry | water (wt%): 0","doi":"10.1016/j.carbpol.2019.115663","source_url":"https://doi.org/10.1016/j.carbpol.2019.115663","year":"2020","confidence":"medium","comments":"\"The glass transition temperature (Tg) of dry regenerated cellulose is 552 K for rayon, 523 K for cupra, and 513 K for lyocell\"  — Dry cuprammonium (cupra) regenerated cellulose Tg = 523 K (DMA). Tg falls to room temperature at ~63% water regain. Cellulose II.  [Okugawa A, Sakaino M, Yuguchi Y, et al., 2020, confidence: medium]"}]}