Intramolecular mobility of side chains of poly(methacrylic acid) in regularly grafted copolyimides in solution

被引:11
作者
Pautov, V. D. [1 ]
Nekrasova, T. N. [1 ]
Anan'eva, T. D. [1 ]
Meleshko, T. K. [1 ]
Ilgach, D. M. [1 ]
Yakimansky, A. V. [1 ]
机构
[1] Russian Acad Sci, Inst Macromol Cpds, St Petersburg 199004, Russia
基金
俄罗斯基础研究基金会;
关键词
INTRA-MOLECULAR MOBILITY; POLY(ACRYLIC ACID); MACROMOLECULES; REACTIVITY; 9-ANTHRYLDIAZOMETHANE; BRUSHES;
D O I
10.1134/S0965545X13080051
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A "dark" copolyimide with regularly grafted side chains of polymethacrylic acid and a luminescence-labeled copolyimide containing an anthracene label covalently attached to side chains with an average polycondensation degree of the polyimide backbone of similar to 16 and an average polymerization degree of side poly(methacrylic acid) chains of similar to 100 are synthesized. Relaxation times tau(IMM) characterizing the mobility of parts of side chains in solvents of different thermodynamic qualities for the backbone and side chains are determined through the polarized luminescence method. It is shown that, in a "common" solvent for the backbone and side chains, the values of tau(IMM) are close to those characterizing the mobility of linear polymethacrylate chains. In selective solvents, changes in tau(IMM) are related to not only changes in intramolecular interactions but also changes in the heterogeneity of the dynamic characteristics of parts of grafted chains arranged at different distances from the grafting point.
引用
收藏
页码:526 / 534
页数:9
相关论文
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