TIPS behavior for IPP/nano-SiO<sub>2</sub> blend membrane formation and its contribution to membrane morphology and performance

Zhensheng Yang; Zheng Sun; Dongsheng Cui; Pingli Li; Zhiying Wang

doi:10.1016/j.cjche.2018.06.021

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TIPS behavior for IPP/nano-SiO₂ blend membrane formation and its contribution to membrane morphology and performance

Materials and Product Engineering | Updated：2026-01-06

- TIPS behavior for IPP/nano-SiO₂ blend membrane formation and its contribution to membrane morphology and performance
- Chinese Journal of Chemical Engineering Vol. 27, Issue 2, Pages: 467-475(2019)
- Affiliations：
  
  2 School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2018.06.021
  CLC：
- Published：2019
- Accepted：
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blend membrane formation and its contribution to membrane morphology and performance[J]. Chinese Journal of Chemical Engineering, 2019, 27(2): 467-475.
DOI：

blend membrane formation and its contribution to membrane morphology and performance[J]. Chinese Journal of Chemical Engineering, 2019, 27(2): 467-475. DOI： 10.1016/j.cjche.2018.06.021.

摘要

Abstract

In the present work

the TIPS behavior of isotactic polypropylene (iPP)/di-n-butyl phthalate (DBP)/dioctyl phthalate (DOP)/nano-SiO

system and the competition relation between liquid-liquid phase separation and polymer crystallization are successfully adjusted by adding nano-SiO

. The liquid-liquid phase separation temperature of the system increases with increasing nano-SiO

content. Besides

iPP crystallization temperature is also changed after adding nano-SiO

. IPP/nano-SiO

blend hollow fiber microporous membrane is prepared via TIPS method. SEM photos show that the membrane exhibits mixed morphology combining cellular structure relating to liquid-liquid phase separation and branch structure originating from polymer crystallization. The relative weight of cellular structure first decreases and then increases with the increase of nano-SiO

content. Furthermore

porosity

connectivity among pores and pure water flux of the membrane first increase and then decrease with increasing nano-SiO

content. However

mechanical performance of the membrane is improved at all times with increasing

nano-SiO

content.

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⁰

TIPS behavior for IPP/nano-SiO2 blend membrane formation and its contribution to membrane morphology and performance

DOI：10.1016/j.cjche.2018.06.021

摘要

Abstract

关键词

Keywords

references

TIPS behavior for IPP/nano-SiO₂ blend membrane formation and its contribution to membrane morphology and performance