Study of poly(acrylic acid)-poly(vinylpyrrolidone) complexes and their photostability

被引：79

作者：

Kaczmarek, H ^{[1
]}

Szalla, A ^{[1
]}

Kaminska, A ^{[1
]}

机构：

[1] Nicholas Copernicus Univ, Fac Chem, Div Gen Chem, PL-87100 Torun, Poland

来源：

POLYMER | 2001年 / 42卷 / 14期

关键词：

poly(acrylic acid); poly(vinylpyrrolidone); photostability;

D O I：

10.1016/S0032-3861(01)00094-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The poly(acrylic acid)(PAA)-poly(vinylpyrrolidone) (PVP) complexes with different stoichiometric ratio were obtained from aqueous solutions at different concentrations and pH values. The structure of complexes in solutions and in solid state has been studied using mainly FTIR spectroscopy. Least-square curve fitting method has been applied to calculate the contribution of different types of carbonyl groups (free and hydrogen bonded) in the PAA/PVP mixtures. Both polymers and their blends at different compositions were UV-irradiated (lambda = 254 nm) in air. It has been found that PAA/PVP complexes are generally more photostable than pure polymers. This stabilisation effect was explained by the high amount of intermolecular hydrogen bonds reinforcing the polymer structure. Photocrosslinking is an additional factor influencing the stability of PAA/PVP complexes. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：6057 / 6069

页数：13

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