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Study on the preparation and thermal shrinkage properties of nano‐SiO 2 /UHMWPE/HDPE blend microporous membranes
Author(s) -
Wu YinCai,
Cui YiHua,
Jin HuaiLong,
Ning ChongChong
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.41321
Subject(s) - materials science , thermogravimetric analysis , microporous material , composite material , shrinkage , porosity , crystallization , membrane , nano , scanning electron microscope , high density polyethylene , chemical engineering , polyethylene , chemistry , biochemistry , engineering
Nano‐SiO 2 /UHMWPE/HDPE blend microporous membranes (NBMs) with different content of nano‐SiO 2 particles were prepared via thermally induced phase separation process. Thermogravimetric analysis was used to investigation of the amount of nano‐SiO 2 particles reserved in NBMs. This approach showed that about 59% of total content of nano‐SiO 2 particles reserved in NBMs. The formation and development of the interface pores were studied by scanning electron microscopy. NBMs performance was characterized by a variety of metrics including thermal shrinkage, melting and crystallization behavior, porosity and pore diameter, and permeability. The results indicated that nano‐SiO 2 particles served as nucleating agent increasing the crystalline of NBMs. The comprehensive properties of NBMs were optimum when the content of nano‐SiO 2 particles was 1%. Compared with pure HDPE separators, NBMs exhibit higher porosity and lower thermal shrinkage due to its high crystalline and the enrichment of UHMWPE chains. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41321.
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