Preparation and Antibacterial Properties of Poly (l-Lactic Acid)-Oriented Microporous Materials

文献类型： 外文期刊

第一作者： Li, Yihong

作者： Li, Yihong;Huang, Qingyi;Luo, Cenyi;Chen, Wei;Li, Zhengqiu;Feng, Yanjun;Li, Jiafeng;Liu, Lei

作者机构：

关键词： oriented micropores; self-reinforcing; antibacterial properties; poly (l-lactic acid); oriented micropores; self-reinforcing; antibacterial properties

期刊名称：BIOMOLECULES （ 影响因子：4.8； 五年影响因子：5.6 ）

ISSN：

年卷期： 2024 年 14 卷 11 期

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收录情况： SCI

摘要： In this manuscript, an efficient self-reinforcing technology-solid hot drawing (SHD) technology-was combined with green processing supercritical carbon dioxide (SC-CO2) foaming technology to promote poly (l-lactic acid) (PLLA) to form an oriented micropore structure. In addition, Polydimethylsiloxane (PDMS), with a high affinity of CO2 and biological safety, was introduced to enhance the nucleation effect in SC-CO2 foaming and co-regulate the uniformity of oriented micropores' structure. The results showed that orientation induced PLLA crystallization, so the tensile strength was improved; the maximum tensile strength of the oriented micropores' PLLA reached 151.2 MPa. Furthermore, the micropores mainly improved the toughness; the maximum elongation at break reached 148.3%. It is worth mentioning that PDMS can form an antibacterial film on the surface of the material, so that the material has a continuous antibacterial effect.

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