Synthesis and properties of thermoplastic propyl-etherified amylose

被引：20

作者：

Teramoto, N ^{[1
]}

Motoyama, T ^{[1
]}

Yosomiya, R ^{[1
]}

Shibata, M ^{[1
]}

机构：

[1] Chiba Inst Technol, Dept Ind Chem, Narashino, Chiba 2750016, Japan

来源：

EUROPEAN POLYMER JOURNAL | 2002年 / 38卷 / 07期

关键词：

propyl-etherified amylose; amylosel; 1-bromopropane; modified starch; etherification; melt processability;

D O I：

10.1016/S0014-3057(01)00306-8

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Amylose was etherified with 1-bromopropane in DMSO. The degree of substitution (DS) was varied by altering the feed ratio of 1-bromopropane. The structures of the products were characterized by IR and H-1-NMR spectroscopy. When the molar feed ratio of 1-bromopropane to hydroxyl groups of amylose was beyond 7.5, the hydroxyl groups were completely substituted with propyl ether groups. The etherified amylose with DS 1.9 showed a glass transition temperature (T-g), and that with DS 2.3 or 3.0 showed both T-g and melting temperature (T-m) (DS 3.0 means complete substitution). The etherification imparted melt processability and solubility in nonpolar organic solvent to amylose. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1365 / 1369

页数：5

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