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《Information Recording Materials》 2018-06
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Effect of solvent on the film formation of sulfonated polyether sulfone

Gai Shuren;Zhang Jing;Lucky Film Company Limited;  
The study on solubility of sulfonated polyether sulfone in formic acid,DMAC and mixed solvent was carryed out; sulfonated polyether sulfone resin film formation experiment was carryed out with formic acid,DMAC and different proportions of formic acid and DMAC as solvent. Formic acid is poor solvent for sulfonated polyether sulfone. The coating of sulfonated polyether sulfone resin using formic acid as solvent is brittle and has crack ills,and can not be used as reverse osmosis membrance. DMAC is a good solvent for sulfonated polyether sulfone. The sulfonated polyether sulfone resin was dissolved in mixed solvent of formic acid and DMAC,with the increasing proportion of DMAC,the solubility of mixed solvent was slightly worse first,then the solubility of mixed solvent increased obviously,and finaly the solubility redused. Due to the gap of volatilization rate,A compact and imperfection coating can be obtained by adding a small amount of DMAC into the formic acid solution of sulfonated polyether sulfone resin.
【CateGory Index】: TQ051.893
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