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Synthesis and thermal properties of cellulose‐based polycaprolactones
Author(s) -
Hatakeyama Hyoe,
Yoshida Takanori,
Izuta Yoshinobu,
Hirose Shigeo,
Hatakeyama Tatsuko
Publication year - 1999
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19991440128
Subject(s) - thermogravimetry , differential scanning calorimetry , fourier transform infrared spectroscopy , glass transition , materials science , cellulose , nuclear chemistry , thermal stability , thermal analysis , cellulose acetate , analytical chemistry (journal) , polymer chemistry , chemistry , thermal , chemical engineering , organic chemistry , polymer , composite material , inorganic chemistry , physics , meteorology , engineering , thermodynamics
Cellulose‐based polycaprolactone (CAPCL) sheets were prepared from cellulose acetate (CA) and ϵ‐caprolactone (CL). Thermal properties of the obtained CAPCL's were studied by differential scanning calorimetry (DSC), thermogravimetry (TG) and TG‐Fourier transform infrared spectrometry (TG‐FTIR). The glass transition temperatures ( T g 's) of CAPCL decreased with increasing CL/OH ratio, until CL/OH ratio reached 15 and then increased above that ratio. Melting of CAPCL was observed when CL/OH ratio was over 10. The thermal degradation temperatures ( T d 's) of CAPCL increased from ca. 350 °C to 390 °C with increasing CL/OH ratio. The results obtained by TG‐FTIR analysis of CAPCL showed that gases with OH, CH, C=O, C‐O‐C groups evolved by thermal degradation.