Miscibility and interactions in poly(n-propyl methacrylate)/poly(vinyl alcohol) blends

被引：9
|
作者：
Yi, JZ [1 ]
Goh, SH
机构：
[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Peoples R China
[2] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore
来源：
POLYMER | 2005年 / 46卷 / 21期
关键词：
blends; miscibility; glass transition temperature;
D O I：
10.1016/j.polymer.2005.07.011
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Poly(n-propyl methacrylate) (PPMA) is miscible with poly(vinyl alcohol) (PVA) over the whole composition range as shown by the existence of a single glass transition temperature in each blend. The interaction between PPMA and PVA was examined by Fourier transform infrared spectroscopy and solid-state nuclear magnetic resonance spectroscopy. The interactions mainly involve the hydroxyl groups of PVA and the carbonyl groups of PPMA. The measurements of proton spin-lattice relaxation time reveal that PPMA and PVA do not mix intimately on a scale of 1-3 nm, but are miscible on a scale of 20-30 mm. A small negative interaction parameter value has been obtained by melting point depression measurement. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：9170 / 9175
页数：6
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