کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5201950 | 1502910 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Aminolytic depolymerization of polyarylsulfones
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Aminolytic depolymerization of polyarylsulfones Aminolytic depolymerization of polyarylsulfones](/preview/png/5201950.png)
چکیده انگلیسی
Aminolysis reaction between polyarylsulfones and organic amines was investigated. A bimolecular nucleophilic substitution mechanism was proposed. The nucleophilic reagent attacks the aryl ether bond carbon on the aryl ring carrying substituents with strong electron-attracting character. 1H NMR and 1H-1H COSY NMR spectroscopies were adopted to characterize the chemical structure of the products, the terminal groups especially. The effect of polyarylsulfone structure on the reactivity was studied by comparing the reaction rates. The aminolysis kinetics of polyethersulfone with ethylenediamine at different temperature and reagent concentration was studied in detail. The molar mass of the aminolyzed product was determined by GPC and theoretical deduction, and they showed great consistency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 103, May 2014, Pages 69-74
Journal: Polymer Degradation and Stability - Volume 103, May 2014, Pages 69-74
نویسندگان
Linghui Wang, Yue Cui, Nachuan Wang, Hong Zhang, Baoku Zhu, Liping Zhu, Youyi Xu,