Preparation, characterization and antibacterial properties of cyanoethylchitosan/cellulose acetate polymer blended films

被引：74

作者：

Abou-Zeid, N. Y. ^{[1
]}

Waly, A. I. ^{[1
]}

Kandile, N. G. ^{[2
]}

Rushdy, A. A. ^{[3
]}

El-Sheikh, M. A. ^{[1
]}

Ibrahim, H. M. ^{[1
]}

机构：

[1] Natl Res Ctr, Text Res Div, Cairo 12311, Egypt

[2] Ain Shams Univ, Fac Girls Arts Sci & Educ, Dept Chem, Cairo 11757, Egypt

[3] Ain Shams Univ, Fac Girls Arts Sci & Educ, Dept Bot, Cairo 11757, Egypt

来源：

CARBOHYDRATE POLYMERS | 2011年 / 84卷 / 01期

关键词：

Cellulose acetate; Cyanoethylchitosan; Polymer blend film; Antibacterial properties; CYANOETHYL CHITOSAN; CARBOXYMETHYL CHITOSAN; ESCHERICHIA-COLI; CELLULOSE; DERIVATIVES; MISCIBILITY; MEMBRANES; BACTERIA; BEHAVIOR; CHITIN;

D O I：

10.1016/j.carbpol.2010.11.026

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Modification of chitosan (CS) by means of blending with other polymers is a convenient method to improve its physical properties for practical utilization. The similarity of cellulose and chitosan in primary structures might facilitate the formation of homogeneous films. Mixing cyanoethylchitosan (CECS) with cellulose acetate (CA) overcomes mechanical weakness of CS films. CECS is prepared by reaction of chitosan with acrylonitrile in the vapour phase under a different reaction conditions, namely, sodium hydroxide concentration and reaction period. Blended films of CECS and CA are made by casting from dimethylformamide (DMF) followed by impregnation in water. CECS/CA films obtained are characterized by nitrogen content, tensile strength, elongation at break, FTIR and thermogravimetric analysis (TGA). Antibacterial activity of films prepared against Gram (-ve) and Gram (+ve) bacteria is measured via both disk diffusion method and bacterial count method. Blended films show good antibacterial effects toward Gram (+ve) bacteria than Gram (-ve) ones. Antibacterial activities of blended films increased by increasing the CECS percent in the blended films while the tenacity of these films gradually decreased. Minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) show that CECS possesses higher effect on Gram (+ve) bacteria Staphylococcus aureus than Gram (-ve) bacteria Escherichia coli. In the meantime, CECS is much more powerful in inhibition of bacteria than CS itself. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：223 / 230

页数：8

共 38 条

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