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聚（乙二醇 - 共 - 环己烷 -1,4 - 二甲醇对苯二甲酸酯）/聚乙醇酸（PETG/PGA）共混物的制备与性能

Preparation and Properties of Poly(ethylene glycol-co-cyclohexane-1,4-dimethanol terephthalate)/Polyglycolic Acid (PETG/PGA) Blends.

作者信息

Wang Kai, Shen Jianing, Ma Zhao, Zhang Yipeng, Xu Nai, Pang Sujuan

机构信息

Department of Polymer Materials and Engineering, School of Materials Science and Engineering, Hainan University, Haikou 570228, China.

Department of Public Chemistry Teaching, School of Science, Hainan University, Haikou 570228, China.

出版信息

Polymers (Basel). 2021 Jan 31;13(3):452. doi: 10.3390/polym13030452.

DOI:10.3390/polym13030452
PMID:33572491
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7866821/
Abstract

Polyglycolic acid (PGA) is used as a reinforcing component to enhance the mechanical properties of poly(ethylene glycol-co-cyclohexane-1,4-dimethanol terephthalate) (PETG). The tensile performance, micromorphology, crystallinity, heat resistance, and melt mass flow rates (MFRs) of PETG/PGA blends with varying PGA contents were studied. Both the tensile yield strength and tensile modulus of the PETG/PGA blends increased gradually with an increase in the PGA content from 0 to 35 wt%. The tensile yield strength of the PETG/PGA (65/35) blend increased by 8.7% (44.38 to 48.24 MPa), and the tensile modulus increased by 40.2% (1076 to 1509 MPa). However, its tensile ductility decreased drastically, owing to the poor interfacial compatibility of PETG/PGA and the oversized PGA domains. A multiple epoxy chain extender (ADR) was introduced into the PETG/PGA (65/35) blend to improve its interfacial compatibility and rheological properties. The tensile performance, micromorphology, rheological properties, crystallinity, and heat resistance of PETG/PGA (65/35) blends with varying ADR contents were studied. The strong chain extension effect of ADR along with its reactive compatibilization improved the rheological properties and tensile ductility. By carefully controlling the ADR concentration, the performance of PETG/PGA blends can be regulated for different applications.

摘要

聚乙醇酸（PGA）用作增强组分，以提高聚（乙二醇 - 共 - 环己烷 - 1,4 - 二甲醇对苯二甲酸酯）（PETG）的机械性能。研究了不同PGA含量的PETG/PGA共混物的拉伸性能、微观形态、结晶度、耐热性和熔体质量流动速率（MFR）。随着PGA含量从0增加到35 wt%，PETG/PGA共混物的拉伸屈服强度和拉伸模量均逐渐增加。PETG/PGA（65/35）共混物的拉伸屈服强度提高了8.7%（从44.38 MPa提高到48.24 MPa），拉伸模量提高了40.2%（从1076 MPa提高到1509 MPa）。然而，由于PETG/PGA的界面相容性差以及PGA域过大，其拉伸延展性急剧下降。将多环氧扩链剂（ADR）引入PETG/PGA（65/35）共混物中，以改善其界面相容性和流变性能。研究了不同ADR含量的PETG/PGA（65/35）共混物的拉伸性能、微观形态、流变性能、结晶度和耐热性。ADR的强扩链效应及其反应性增容改善了流变性能和拉伸延展性。通过仔细控制ADR浓度，可以针对不同应用调节PETG/PGA共混物的性能。

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本文引用的文献

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A comparable study of polyglycolic acid's degradation on macrophages' activation.聚乙醇酸降解对巨噬细胞激活的对比研究。
Mater Sci Eng C Mater Biol Appl. 2020 Apr;109:110574. doi: 10.1016/j.msec.2019.110574. Epub 2019 Dec 20.
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Effects of Organic Montmorillonite (OMMT) and Pre-Orientation on Property of Poly(l-lactic acid) (PLLA)/Ethylene Propylene Diene Monomer (EPDM) Blends.
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Polymers (Basel). 2020 Jan 4;12(1):106. doi: 10.3390/polym12010106.
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Polymers (Basel). 2016 Dec 8;8(12):417. doi: 10.3390/polym8120417.