Effect of processing conditions on the cellular morphology of polyethylene hollow fiber foams for membrane applications

IF 1.3 4区医学 Q4 MATERIALS SCIENCE, BIOMATERIALS

Cellular Polymers Pub Date : 2018-07-01 DOI:10.1177/0262489318795967

Z. Razzaz, A. Mohebbi, D. Rodrigue

引用次数: 8

Abstract

A continuous method without any solvent is proposed to produce porous hollow fibers for membrane (HFM) applications. In this case, linear low-density polyethylene was combined with azodicarbonamide to produce samples via extrusion. In particular, the processing (chemical blowing agent content and temperature profile) and post-processing (stretching velocity) conditions were optimized to obtain a cellular structure having a high cell density and uniform cell size distribution. From the samples obtained, a complete set of characterization was performed (morphological, mechanical, physical, and gas transport). The results show that HFM having a higher cell density can increase gas permeability, especially for hydrogen. Overall, it is shown that low-cost polyolefins having a suitable cellular structure can be used for gas separation membranes.

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加工条件对膜用聚乙烯中空泡沫纤维细胞形态的影响

提出了一种不使用任何溶剂的连续方法来生产用于膜（HFM）应用的多孔中空纤维。在这种情况下，线性低密度聚乙烯与偶氮二甲酰胺结合，通过挤出生产样品。特别地，优化处理（化学发泡剂含量和温度分布）和后处理（拉伸速度）条件，以获得具有高细胞密度和均匀细胞尺寸分布的细胞结构。从获得的样品中，进行了一整套表征（形态、机械、物理和气体传输）。结果表明，具有更高电池密度的HFM可以增加气体渗透性，尤其是对于氢气。总之，已经表明具有合适的蜂窝状结构的低成本聚烯烃可以用于气体分离膜。

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

Cellular Polymers 工程技术-材料科学：生物材料

CiteScore

3.10

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Cellular Polymers is concerned primarily with the science of foamed materials, the technology and state of the art for processing and fabricating, the engineering techniques and principles of the machines used to produce them economically, and their applications in varied and wide ranging uses where they are making an increasingly valuable contribution. Potential problems for the industry are also covered, including fire performance of materials, CFC-replacement technology, recycling and environmental legislation. Reviews of technical and commercial advances in the manufacturing and application technologies are also included. Cellular Polymers covers these and other related topics and also pays particular attention to the ways in which the science and technology of cellular polymers is being developed throughout the world.