Effects of UV irradiation on the wettability of chitosan films containing dansyl derivatives

被引：37
|
作者：
Praxedes, A. P. P. [1 ]
da Silva, A. J. C. [2 ]
da Silva, R. C. [2 ]
Lima, R. P. A. [1 ]
Tonholo, J. [2 ]
Ribeiro, A. S. [2 ]
de Oliveira, I. N. [1 ]
机构：
[1] Univ Fed Alagoas, Inst Fis, BR-57072970 Maceio, AL, Brazil
[2] Univ Fed Alagoas, Inst Quim & Biotecnol, BR-57072970 Maceio, AL, Brazil
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2012年 / 376卷
关键词：
Chitosan; Dansyl; UV irradiation; Wetting phenomena; LASER-ABLATION; MECHANICAL-PROPERTIES; THIN-FILMS; SURFACE; CHITIN; DEGRADATION; ADSORPTION; POLYMERS; CHAIN;
D O I：
10.1016/j.jcis.2012.02.056
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The morphological and wetting properties of chitosan films containing dansyl derivatives have been investigated. By means of dynamic contact angle measurements, we study the modification of surface properties of chitosan-based films due to UV irradiation. The results were analyzed in the light of the molecular-kinetic theory which describes the wetting phenomena in terms of the statistical dynamics for the displacement of liquid molecules in a solid substrate. Our results show that the immobilization of dansyl groups in the chitosan backbone leads to a pronounced enhancement of the UV sensitivity of polymeric films. (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码：255 / 261
页数：7
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