The effect of different compatibilisers on the morphology and rheological properties of PP/PET polymer blends

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Plastics, Rubber and Composites Pub Date : 2021-09-23 DOI:10.1080/14658011.2021.1981525

S. Kordjazi, Z. Kordjazi, N. Golshan Ebrahimi

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引用次数: 5

Abstract

ABSTRACT In the present study, the compatibilisation of polypropylene/polyethylene terephthalate (PP/PET) blends with different types of compatibilisers including maleic anhydride-grafted polypropylene (PP-g-MA), glycidyl methacrylate-grafted polypropylene (PP-g-GMA) and ethylene propylene diene monomer (EPDM) rubber in different concentrations was examined. Samples were evaluated in terms of morphology, thermal and rheological properties. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimeter (DSC) were used. According to the results, all samples had a matrix-droplet morphology. Moreover, with increasing the compatibiliser and its concentration, the droplet sizes in dispersed phase decreased. In other words, compatibilised PP/PET showed a greater dispersed phase size reduction, lower crystallinity percentage and larger storage modulus at low frequencies in comparison with non-compatibilised PP/PET blend. Among different samples, polymer blend compatibilised with PP-g-MA (5 phr) indicated the lowest particle size and significantly improved the compatibilisation of the PP/PET blend.

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不同增容剂对PP/PET共混物形态和流变性能的影响

摘要本研究考察了聚丙烯/聚对苯二甲酸乙二醇酯(PP/PET)共混物与不同类型增容剂(马来酸酐接枝聚丙烯(PP-g- ma)、甲基丙烯酸缩水甘油酯接枝聚丙烯(PP-g- gma)和不同浓度的乙丙二烯单体(EPDM)橡胶的增容作用。对样品的形貌、热学和流变性能进行了评价。采用扫描电子显微镜(SEM)、傅里叶变换红外光谱(FTIR)和差示扫描量热仪(DSC)进行分析。结果表明，所有样品均具有基质-液滴形态。随着增容剂浓度的增加，分散相中的液滴尺寸减小。换句话说，与非增容PP/PET共混物相比，增容PP/PET在低频处表现出更大的分散相尺寸减小，更低的结晶度百分比和更大的存储模量。在不同的样品中，与PP-g- ma (5 phr)共混的聚合物具有最低的粒径，并显著提高了PP/PET共混物的增容性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Plastics, Rubber and Composites 工程技术-材料科学：复合

CiteScore

4.10

自引率

0.00%

发文量

审稿时长

4 months

期刊介绍： Plastics, Rubber and Composites: Macromolecular Engineering provides an international forum for the publication of original, peer-reviewed research on the macromolecular engineering of polymeric and related materials and polymer matrix composites. Modern polymer processing is increasingly focused on macromolecular engineering: the manipulation of structure at the molecular scale to control properties and fitness for purpose of the final component. Intimately linked to this are the objectives of predicting properties in the context of an optimised design and of establishing robust processing routes and process control systems allowing the desired properties to be achieved reliably.