期刊
FRONTIERS IN MATERIALS
卷 8, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fmats.2021.733535
关键词
poly(trimethylene carbonate); ternary self-blending; In vitro enzymatic degradation; lipase; degradation rate; form-stability
资金
- National Key Research & Development Program of China [2016YFC1000902]
- National Natural Science Foundation of China [81872125]
- Liaoning Revitalization Talents Program [XLYC1807142]
- Department of Science & Technology of Liaoning Province [2018225079]
- Educational Department of Liaoning Province [ZF2019040]
- Shenyang Science and Technology Bureau [RC190426]
- Outstanding Scientific Fund of Shengjing Hospital [201704]
By adjusting the mass ratio of high/medium/low molecular weight PTMC, the degradation rate of PTMC can be precisely controlled. The strategy of ternary self-blending can simultaneously provide PTMC with a lower degradation rate and good morphology stability.
To more precisely control the degradation rate of poly(trimethylene carbonate) (PTMC), self-blending films were prepared via the ternary self-blending of pure PTMC with a molecular weight of 334, 152, and 57 kg/mol. The in vitro enzymolysis degradation of the ternary self-blending films was performed in lipase solutions. The results showed that ternary self-blending could control the degradation of PTMC by adjusting the mass ratio of high/medium/low molecular weight PTMC in the composition, and the PTMC334/PTMC152/PTMC57 films with a mass ratio of 1/4/16 showed mass loss of 85.96% after seven weeks of degradation, while that of PTMC334/PTMC152/PTMC57 films with a mass ratio of 1/1/1 was 96.39%. The former and latter's degradation rate constant was 13.263 and 23.981%/w, respectively, and the former presented better morphology stability than the latter. The strategy of ternary self-blending could simultaneously bestow PTMC with a lower degradation rate and good morphology stability, indicating that ternary self-blending is an efficient way to control the degradation performance of PTMC more precisely
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