Fabrication of Microporous Membranes from Melt Extruded Polypropylene Precursor Films via Stretching: Effect of Annealing

Shan Wang; Amir Saffar; Abdellah Ajji; Hong Wu; Shao-yun Guo

doi:10.1007/s10118-015-1643-x

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Fabrication of Microporous Membranes from Melt Extruded Polypropylene Precursor Films via Stretching: Effect of Annealing

PAPER | Updated：2021-06-21

- Fabrication of Microporous Membranes from Melt Extruded Polypropylene Precursor Films via Stretching: Effect of Annealing
- Fabrication of Microporous Membranes from Melt Extruded Polypropylene Precursor Films via Stretching: Effect of Annealing
- Chinese Journal of Polymer Science 2015年33卷第7期页码：1028-1037
- Affiliations：
  
  a.The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
  b.Research Center for High performance Polymer and Composite Systems (CREPEC), Chemical Engineering Department, Polytechnique Montreal, P.O. Box 6079, Montreal, Quebec H3C 3A7, Canada
- Author bio：
  
  **Abdellah Ajji, E-mail: abdellah.ajji@polymtl.ca
  Shao-yun Guo (郭少云), E-mail: sguo@scu.edu.cn
- Funds：
  
  National Natural Science Foundation of China(51273132);Chinese Scholarship Council (CSC
- DOI：10.1007/s10118-015-1643-x
  中图分类号：
- 收稿：2014-11-04，
  
  修回：2014-12-10，
  
  录用：2014-12-22，
  
  纸质出版：2015-07
- Accepted：
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Shan Wang, Amir Saffar, Abdellah Ajji, 等. Fabrication of Microporous Membranes from Melt Extruded Polypropylene Precursor Films via Stretching: Effect of Annealing[J]. Chinese Journal of Polymer Science, 2015,33(7):1028-1037.

Shan Wang, Amir Saffar, Abdellah Ajji, et al. Fabrication of Microporous Membranes from Melt Extruded Polypropylene Precursor Films via Stretching: Effect of Annealing[J]. Chinese Journal of Polymer Science, 2015, 33(7): 1028-1037. DOI: 10.1007/s10118-015-1643-x.
Shan Wang, Amir Saffar, Abdellah Ajji, 等. Fabrication of Microporous Membranes from Melt Extruded Polypropylene Precursor Films via Stretching: Effect of Annealing[J]. Chinese Journal of Polymer Science, 2015,33(7):1028-1037. DOI： 10.1007/s10118-015-1643-x.

Shan Wang, Amir Saffar, Abdellah Ajji, et al. Fabrication of Microporous Membranes from Melt Extruded Polypropylene Precursor Films via Stretching: Effect of Annealing[J]. Chinese Journal of Polymer Science, 2015, 33(7): 1028-1037. DOI: 10.1007/s10118-015-1643-x. DOI：

摘要

Abstract

In this work

the effects of annealing conditions on the microstructure of polypropylene (PP) precursor films and further on the porous structure and permeability of stretched membranes were investigated. Combinations of WAXD

FTIR

DSC and DMA results clearly showed the crystalline orientation and crystallinity of the precursor film increased with annealing temperature

while the molecular chain entanglements in the amorphous phase decreased. Changes in the deformation behavior suggested more lamellar separation occurred for the films annealed at higher temperatures. Surface morphologies of the membranes examined by SEM revealed more pore number and uniform porous structure as the annealing temperature increased. In accordance with the SEM results

the permeability of the membranes increased with annealing temperature. On the other hand

it was found that 10 min was almost enough for the annealing process to obtain the microporous membranes with an optimal permeability.

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