| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Engineering -- From Ideas to Practice: An EPD Symposium in Honor of Jiann-Yang Hwang
|
| Presentation Title |
Blending of Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene with Polyethylene-graft-polystyrene for Cation Exchange Membrane Preparation with Enhanced Properties |
| Author(s) |
Zhichao Chen, Jiann-Yang Hwang, Yong Shi, Di Huang, Weigang Zhao |
| On-Site Speaker (Planned) |
Zhichao Chen |
| Abstract Scope |
A typical cation exchange membrane can be prepared from graft polymerization of styrene onto low-density polyethylene followed by sulfonation reaction. It was found that the thermoplastic elastomer polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (PS-PEB-PS) can be blended with polyethylene-graft-polystyrene (PE-g-PS) in toluene. A novel composite cation exchange membrane was prepared by sulfonating the membrane cast from the mixture solution of PE-g-PS and PS-PEB-PS. Compared with non-blended cation exchange membrane, the blending of 10% PS-PEB-PS enhanced the ion exchange capacity, water uptake and Mullen burst strength of the cation exchange membrane by 18.3%, 9.5% and 26.3%, respectively. The blending also lowered the thermal expansion rate by 73.4%, making the membrane more thermally stable over temperature increase. |
| Proceedings Inclusion? |
Planned: |