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Ultrahigh Flux Composite Hollow Fiber Membrane via Highly Crosslinked PDMS for Recovery of Hydrocarbons: Propane and Propene
Author(s) -
Liang Can Zeng,
Chung TaiShung
Publication year - 2018
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201700535
Subject(s) - polydimethylsiloxane , polyacrylonitrile , permeance , membrane , materials science , propane , propene , composite number , chemical engineering , fiber , gas separation , substrate (aquarium) , composite material , polymer , permeation , organic chemistry , chemistry , catalysis , biochemistry , oceanography , geology , engineering
In order to make membrane separation technologies more cost‐competitive with the well‐established processes that are energy intensive for gas/vapor separation, a defect‐free membrane with a high gas permeance is necessary. However, it remains challenging to meet these needs because of the difficulties in developing a suitable material and process that are economical and practical. Herein, a novel and straightforward strategy is presented to produce a defect‐free hollow fiber composite membrane using a highly crosslinked polydimethylsiloxane (PDMS) synthesized by using a postcrosslinking method. The PDMS can be directly coated on a polyacrylonitrile (PAN) membrane substrate, and the resultant PDMS/PAN composite membrane has ultrahigh C 3 H 8 and C 3 H 6 permeances that are higher than 10 000 and 11 000 GPU, respectively, and the corresponding permselectivity of C 3 H 8 /N 2 and C 3 H 6 /N 2 are about 21 and 24, respectively. The newly developed methods and materials may open up a new cost‐effective method to fabricate next‐generation composite membranes for the recovery of hydrocarbons, organic vapors, and gases.