聚乙二醇酸/聚对苯二甲酸乙二醇酯（PET）和液晶聚合物/PET共混薄膜的阻隔、热学和机械性能

IF 4.5 2区化学 Q2 POLYMER SCIENCE

Polymer Pub Date : 2025-07-04 DOI:10.1016/j.polymer.2025.128761

Rishabh Tiwari , Mohamed A. Abdelwahab , Muhammad Rabnawaz

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引用次数: 0

摘要

本研究报告了液晶聚合物（LCP）和聚羟基乙酸（PGA）共混物对聚对苯二甲酸乙二醇酯（PET）的阻隔性能、热性能和力学性能的影响。这些共混物及其对照物是用微复合剂熔融共混技术制备的。用Joncryl ADR作为相容剂增强PET/LCP和PET/PGA共混物的界面粘附和混溶。扫描电镜分析显示，加入1 phr Joncryl ADR后，PET/LCP和PET/PGA共混物的界面粘附性得到改善。PET/20% LCP和PET/20% PGA共混物的阻氧性能分别比纯PET膜提高了41%和62%。PET/20% LCP和PET/20% PGA共混物的水蒸气阻隔性分别提高了15%和41%。力学性能分析表明，PET/20% PGA共混物的拉伸强度和模量都有所提高，PET/20% LCP共混物的拉伸强度和模量分别提高了42%和22.4%。这些新型PET混合物的全聚酯成分承诺增强阻隔性能，同时保持化学和机械可回收性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Barrier, thermal, and mechanical properties of polyglycolic acid/polyethylene terephthalate (PET) and liquid crystalline polymer/PET blend films

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Barrier, thermal, and mechanical properties of polyglycolic acid/polyethylene terephthalate (PET) and liquid crystalline polymer/PET blend films

This study reports the effects of blends of liquid crystal polymer (LCP) and polyglycolic acid (PGA) on the barrier, thermal, and mechanical properties of polyethylene terephthalate (PET). The blends, along with their controls, were prepared using a melt-blending technique with a micro-compounder. Joncryl ADR was used as a compatibilizer to enhance interfacial adhesion and miscibility in PET/LCP and PET/PGA blends. Scanning electron microscopy analysis revealed improved interfacial adhesion of the PET/LCP and PET/PGA blends upon incorporating 1 phr Joncryl ADR. Oxygen barrier properties for PET/20 % LCP and PET/20 % PGA blends were enhanced by 41 and 62 %, respectively, compared to neat PET film. The water vapor barrier improved by 15 and 41 % for PET/20 % LCP and PET/20 % PGA blends, respectively. Mechanical performance analysis showed enhancements in tensile strength and modulus for both PET blends, with PET/20 % PGA blend outperforming PET/20 % LCP in tensile strength (42 % increase) and modulus (22.4 % increase). All-polyester composition of these new PET blends promises enhanced barrier properties while remaining both chemically and mechanically recyclable.

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来源期刊

Polymer 化学-高分子科学

CiteScore

7.90

自引率

8.70%

发文量

959

审稿时长

32 days

期刊介绍： Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.