Characterization and Thermal Stability of Cellulose-graft-Polyacryloniytrile Prepared by Using KMnO4/Citric Acid Redox System

被引：19

作者：

El-Khouly, A. S. ^{[1
,2
]}

Takahashi, Y. ^{[2
]}

Takada, A. ^{[2
]}

Safaan, A. A. ^{[1
]}

Kenawy, E. ^{[1
,3
]}

Hafiz, Y. A. ^{[1
]}

机构：

[1] Tanta Univ, Fac Sci, Dept Chem, Tanta, Egypt

[2] Kyushu Univ, Div Adv Device Mat, Inst Mat Chem & Engn, Kasuga, Fukuoka 8168580, Japan

[3] King Saud Univ, Dept Chem, Petrochem Res Chair, Fac Sci, Riyadh 11451, Saudi Arabia

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2010年 / 116卷 / 03期

关键词：

cellulose; graft polymerization; polyacrylonitrile; redox initiation; thermal stability; SOLID-STATE; ETHYL-METHACRYLATE; COTTON CELLULOSE; VINYL MONOMERS; COPOLYMERIZATION; ACRYLONITRILE; DERIVATIVES; ACRYLAMIDE; C-13-NMR; BEHAVIOR;

D O I：

10.1002/app.31679

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An effective condition of graft polymerization of acrylonitrile onto cellulose fiber in large volume of KMnO4/citric acid aqueous solution was examined and the produced grafted copolymers were characterized by using SEM, NMR, FTIR, XRD, TGA, and DSC in comparison with component homopolymers. Graft yield, GY, obtained by simple weighting method was close to the value obtained by NMR analysis. Significant change of chemical structure in cellulose fiber, other than graft reaction, was not detected by NMR and FTIR measurements, whereas a decrease in the degree of crystallinity by the reaction was detected by XRD measurement. It was pointed out that thermograms for grafted samples resembles with that of cellulose at T < 370 degrees C and become similar with that for polyacrylonitrile at T > 370 degrees C and the mass of residue at 550 degrees C is proportional to the content of polyacrylonitrile (GY) only. It is concluded that thermal decomposition of both polymers occurs almost independently in grafted polymers and thermal stability of cellulose fiber is not improved. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 116: 1788-1795, 2010

引用

页码：1788 / 1795

页数：8

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