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[求助]
聚苯乙烯的磺化 已有1人參與
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| 各位大俠,有誰以前做過聚苯乙烯的磺化反應(yīng),我最近在做這個(gè)反應(yīng),查了好多文獻(xiàn),看不出個(gè)所以然來,請高手指點(diǎn)~~~不勝感謝! |


榮譽(yù)版主 (文壇精英)
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專家經(jīng)驗(yàn): +1427 |
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遇到什么問題 可以先描述出來 US patent: The sulfonating reagent, acetyl sulfate, was prepared by slowly adding sulfuric acid to a solution of acetic anhydride in 1,2-dichloroethane (DCE) at 0℃. The freshly prepared acetyl sulfate was then added to a well-stirred solution of the polymer in DCE at 50℃. After 1h the reaction was terminated by the addition of ethanol. The sulfonated polymer was isolated by steam distillation, washed with methanol, dried at room temperature for 3 days, and dried under vacuum above the Tg for another 3 days. |
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