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通过多层共挤出和拉伸制备无机颗粒填充聚丙烯/高密度聚乙烯膜

Development of Inorganic Particle-Filled Polypropylene/High Density Polyethylene Membranes via Multilayer Co-Extrusion and Stretching.

作者信息

Castejón Pilar, Antunes Marcelo, Arencón David

机构信息

Poly2 Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC BarcelonaTech), ESEIAAT, C/Colom 11, E-08222 Terrassa, Spain.

出版信息

Polymers (Basel). 2021 Jan 19;13(2):306. doi: 10.3390/polym13020306.

DOI:10.3390/polym13020306
PMID:33478149
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7835944/
Abstract

This work is made to ascertain the effects of mineral fillers, namely calcium carbonate and talc, on the morphology and properties of multilayer polypropylene (PP)/high-density polyethylene (HDPE) porous membranes. Multilayer membranes were prepared using the three-stage Melt-Extrusion, Annealing and Uniaxial Stretching (MEAUS) process. The orientation of PP's crystalline phase was affected by both the flow-induced crystallization and the heterogeneous nucleation promoted by the fillers. A synergistic effect was observed in the filled samples due to the generation of pores after the stretching-induced lamellae separation and the debonding of mineral fillers from the polymeric matrix. The fillers increased the porous surface, leading to an increase of permeance to air, being this effect more marked at higher filler contents. Talc showed a higher efficiency to create porous surfaces when compared to calcium carbonate. The thermal stability of the membranes increased with filler addition, as well as their stiffness and strength.

摘要

这项工作旨在确定矿物填料，即碳酸钙和滑石粉，对多层聚丙烯（PP）/高密度聚乙烯（HDPE）多孔膜的形态和性能的影响。采用三阶段熔融挤出、退火和单轴拉伸（MEAUS）工艺制备多层膜。PP结晶相的取向受到流动诱导结晶和填料促进的异相成核的影响。由于拉伸诱导的片晶分离后产生孔隙以及矿物填料与聚合物基体的脱粘，在填充样品中观察到协同效应。填料增加了多孔表面，导致透气率增加，这种效应在较高填料含量时更为明显。与碳酸钙相比，滑石粉在形成多孔表面方面表现出更高的效率。膜的热稳定性随着填料的加入而提高，其刚度和强度也随之提高。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/4682f6f3c330/polymers-13-00306-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/74c1e75a4998/polymers-13-00306-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/c7b756af896f/polymers-13-00306-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/cabfe390c964/polymers-13-00306-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/a6d608a20290/polymers-13-00306-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/b7d93f80fbf0/polymers-13-00306-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/364ae5b8a957/polymers-13-00306-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/4682f6f3c330/polymers-13-00306-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/74c1e75a4998/polymers-13-00306-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/c7b756af896f/polymers-13-00306-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/cabfe390c964/polymers-13-00306-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/a6d608a20290/polymers-13-00306-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/b7d93f80fbf0/polymers-13-00306-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/364ae5b8a957/polymers-13-00306-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/daf3/7835944/4682f6f3c330/polymers-13-00306-g007.jpg

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