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452095832

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[求助] 聚苯乙烯的磺化 已有1人参与

各位大侠,有谁以前做过聚苯乙烯的磺化反应,我最近在做这个反应,查了好多文献,看不出个所以然来,请高手指点~~~不胜感谢!
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橡胶人

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【答案】应助回帖

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感谢参与,应助指数 +1
452095832: 金币+5, ★★★很有帮助 2014-04-24 17:21:52
遇到什么问题  可以先描述出来
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.
2楼2014-04-24 14:58:47
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452095832

铜虫 (小有名气)

引用回帖:
2楼: Originally posted by 橡胶人 at 2014-04-24 14:58:47
遇到什么问题  可以先描述出来
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℃. T ...

好的,非常感谢你~我其实还没开始做,只是先查了些文献,老师说方法不可取~~
低调做人,高调做事。
3楼2014-04-24 17:21:37
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余祖珍

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4楼2017-05-24 23:37:54
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