TY - JOUR
T1 - Preparation and characterization of aliphatic/aromatic copolyesters based on 1,4-cyclohexanedicarboxylic acid
AU - Wang, Liancai
AU - Xie, Zhiguo
AU - Bi, Xiangjun
AU - Wang, Xiang
AU - Zhang, Aiying
AU - Chen, Zhuqiong
AU - Zhou, Jianye
AU - Feng, Zengguo
PY - 2006/9
Y1 - 2006/9
N2 - A series of biodegradable aliphatic/aromatic copolyesters, poly(butylene terephthalate)-co-poly(butylene cyclohexanedicarboxylate)-b-poly(ethylene glycol) (PTCG), were prepared by a two-step melt polycondensation method and characterized by means of GPC, FTIR, NMR, DSC, TGA, etc. The effects of aliphatic ester content on the physical, mechanical and thermal properties, as well as in vitro and in vivo degradation behaviors were investigated. The decrease in mechanical strength was observed with an increase in poly(butylene cyclohexanedicarboxylate) (PBC) molar fraction. DSC results showed one melting point and two glass transition temperatures in all samples, and the melting temperature was found to go down gradually as more cyclohexanedicarboxylic acid (CHDA) was added. During the in vitro and in vivo degradation processes, erosion of the surface was dominant as evidenced by scanning electron microscopic observations. The copolyesters containing many CHDA units were featured by the higher water uptake and faster degradation due to much richer amorphous phase within them.
AB - A series of biodegradable aliphatic/aromatic copolyesters, poly(butylene terephthalate)-co-poly(butylene cyclohexanedicarboxylate)-b-poly(ethylene glycol) (PTCG), were prepared by a two-step melt polycondensation method and characterized by means of GPC, FTIR, NMR, DSC, TGA, etc. The effects of aliphatic ester content on the physical, mechanical and thermal properties, as well as in vitro and in vivo degradation behaviors were investigated. The decrease in mechanical strength was observed with an increase in poly(butylene cyclohexanedicarboxylate) (PBC) molar fraction. DSC results showed one melting point and two glass transition temperatures in all samples, and the melting temperature was found to go down gradually as more cyclohexanedicarboxylic acid (CHDA) was added. During the in vitro and in vivo degradation processes, erosion of the surface was dominant as evidenced by scanning electron microscopic observations. The copolyesters containing many CHDA units were featured by the higher water uptake and faster degradation due to much richer amorphous phase within them.
KW - 1,4-Cyclohexanedicarboxylic acid
KW - Aliphatic/aromatic copolyester
KW - Biodegradability
KW - Mechanical property
UR - https://www.scopus.com/pages/publications/33744513175
U2 - 10.1016/j.polymdegradstab.2006.01.003
DO - 10.1016/j.polymdegradstab.2006.01.003
M3 - Article
AN - SCOPUS:33744513175
SN - 0141-3910
VL - 91
SP - 2220
EP - 2228
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
IS - 9
ER -