Structure and properties of chlorogenic acid-loaded polylactide fiber prepared by melt spinning

IF 7.7 1区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

International Journal of Biological Macromolecules Pub Date : 2024-03-13 DOI:10.1016/j.ijbiomac.2024.130810

Dongzheng Yu , Zeping Duan , Aming Wang , Ling Li , Haiyang Guo , Bingyao Deng , Dawei Li , Haoxuan Li , Qingsheng Liu

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引用次数: 0

Abstract

Polylactide/chlorogenic acid (PLA/CGA) blends with different weight ratios were prepared by melt mixing, and corresponding PLA/CGA fibers were produced via a two-step melt spinning process. For PLA/CGA blends, CGA was distributed uniformly in the PLA matrix. The intermolecular interactions between CGA and PLA existed. The viscosity of PLA/CGA blends was much lower than that of neat PLA. With the increase of CGA content, the viscosity of PLA/CGA blends decreased. As the CGA content increased, the crystallinity of both PLA/CGA blends and fibers decreased. In addition, the tensile strength of PLA/CGA fibers was slightly lower than that of neat PLA fiber. For PLA/CGA fibers, the 6-fold drawn PLA/CGA fiber with 3 % CGA owned the highest tensile strength of 420 MPa. The ultraviolet (UV) resistance of PLA/CGA fibers were enhanced significantly by the introduction of CGA. When the CGA content was not <3 %, the UV transmittance of PLA/CGA fibers was <8 %. Moreover, PLA/CGA fibers exhibited good antioxidant properties. PLA/CGA fibers with 10 % CGA owned the highest antioxidant rate of >90 %. In addition, the 6-fold drawn PLA/CGA fiber with 10 % CGA presented excellent release performance with a 7-day cumulative CGA release rate of 19 %.

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熔融纺丝法制备的绿原酸负载聚乳酸纤维的结构和性能。

通过熔融混合制备了不同重量比的聚乳酸/绿原酸（PLA/CGA）混合物，并通过两步熔融纺丝工艺制备了相应的 PLA/CGA 纤维。在聚乳酸/CGA共混物中，CGA均匀地分布在聚乳酸基体中。CGA 与聚乳酸之间存在分子间相互作用。PLA/CGA 共混物的粘度远低于纯 PLA。随着 CGA 含量的增加，PLA/CGA 混合物的粘度降低。随着 CGA 含量的增加，PLA/CGA 混合物和纤维的结晶度都有所下降。此外，PLA/CGA 纤维的拉伸强度略低于纯 PLA 纤维。在 PLA/CGA 纤维中，含有 3% CGA 的 6 倍拉伸 PLA/CGA 纤维的拉伸强度最高，达到 420 兆帕。引入 CGA 后，PLA/CGA 纤维的抗紫外线（UV）性能显著提高。当 CGA 含量未达到 90% 时，PLA/CGA 纤维的抗紫外线（UV）性能明显提高。此外，含有 10% CGA 的 6 倍拉伸聚乳酸/CGA 纤维具有优异的释放性能，7 天的累积 CGA 释放率为 19%。

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来源期刊

International Journal of Biological Macromolecules 生物-生化与分子生物学

CiteScore

13.70

自引率

9.80%

发文量

2728

审稿时长

64 days

期刊介绍： The International Journal of Biological Macromolecules is a well-established international journal dedicated to research on the chemical and biological aspects of natural macromolecules. Focusing on proteins, macromolecular carbohydrates, glycoproteins, proteoglycans, lignins, biological poly-acids, and nucleic acids, the journal presents the latest findings in molecular structure, properties, biological activities, interactions, modifications, and functional properties. Papers must offer new and novel insights, encompassing related model systems, structural conformational studies, theoretical developments, and analytical techniques. Each paper is required to primarily focus on at least one named biological macromolecule, reflected in the title, abstract, and text.