Synthesis, characterization, and properties of degradable poly(l-lactic acid)/poly(butylene terephthalate) copolyesters containing 1,4-cyclohexanedimethanol
Article
Article Title | Synthesis, characterization, and properties of degradable poly(l-lactic acid)/poly(butylene terephthalate) copolyesters containing 1,4-cyclohexanedimethanol |
---|---|
ERA Journal ID | 1671 |
Article Category | Article |
Authors | Wang, Bingtao (Author), Zhang, Yan (Author), Song, Pingan (Author), Guo, Zhenghong (Author), Cheng, Jie (Author) and Fang, Zhengping (Author) |
Journal Title | Journal of Applied Polymer Science |
Journal Citation | 120 (5), pp. 2985-2995 |
Number of Pages | 11 |
Year | 2010 |
Publisher | John Wiley & Sons |
Place of Publication | United States |
ISSN | 0021-8995 |
1097-4628 | |
Digital Object Identifier (DOI) | https://doi.org/10.1002/app.33373 |
Web Address (URL) | https://onlinelibrary.wiley.com/doi/10.1002/app.33373 |
Abstract | High-molecular-weight copolyesters based on poly(butylene terephthalate) as rigid aromatic segments and poly(l-lactic acid) (PLLA) as degradable aliphatic segments were synthesized via the polycondensation of terephthalic acid, 1,4-butanediol (BDO), 1,4-cyclohexanedimethanol (CHDM), and PLLA oligomer. By tailoring the molar ratio of diols (BDO and CHDM), we investigated in detail the effects of the CHDM rigid hexacyclic ring on the synthesis, mechanical properties, thermal stabilities, and degradation behaviors of the copolyesters. With increasing CHDM content, the initial decomposition temperature increased from 282.5 to 322.2°C, and the tensile strength improved by nearly four times, from 5.4 to 19 MPa. When the molar ratio of BDO/CHDM was 95/5, the weight-average molecular weight of the copolyester was 89,400 g/mol with a polydispersity of 1.96. In addition, hydrolytic degradation results in phosphate buffer solution indicate that the degradation rate of the copolyesters displayed a strong dependency on the temperature and CHDM composition. |
Keywords | copolymerization; degradation; polyesters |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 340399. Macromolecular and materials chemistry not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Zhejiang A & F University, China |
Zhejiang University, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4526/synthesis-characterization-and-properties-of-degradable-poly-l-lactic-acid-poly-butylene-terephthalate-copolyesters-containing-1-4-cyclohexanedimethanol
1151
total views7
total downloads3
views this month0
downloads this month