壳聚糖
纳米颗粒
热重分析
傅里叶变换红外光谱
材料科学
聚合物
化学工程
热稳定性
纳米复合材料
纤维素
食品包装
可生物降解聚合物
溶解度
纳米技术
复合材料
化学
有机化学
食品科学
工程类
作者
Márcia R. de Moura,Marcos V. Lorevice,L. H. C. Mattoso,Valtencir Zucolotto
标识
DOI:10.1111/j.1750-3841.2010.02013.x
摘要
Abstract: The need for biodegradable polymers for packaging has fostered the development of novel, biodegradable polymeric materials from natural sources, as an alternative to reduce amount of waste and environmental impacts. The present investigation involves the synthesis of chitosan nanoparticles–carboxymethylcellulose films, in view of their increasing areas of application in packaging industry. The entire process consists of 2‐steps including chitosan nanoparticles preparation and their incorporation in carboxymethylcellulose films. Uniform and stable particles were obtained with 3 different chitosan concentrations. The morphology of chitosan nanoparticles was tested by transmission electron microscopy, revealing the nanoparticles size in the range of 80 to 110 nm. The developed film chitosan nanoparticles–carboxymethylcellulose films were characterized by Fourier transform infrared spectroscopy (FT‐IR), thermogravimetric analysis, solubility tests, and mechanical analysis. Improvement of thermal and mechanical properties were observed in films containing nanoparticles, with the best results occurring upon addition of nanoparticles with 110 nm size in carboxymethylcellulose films. Practical Application: Carboxymethylcellulose films containing chitosan nanoparticles synthesized and characterized in this article could be a potential material for food and beverage packaging applications products due to the increase mechanical properties and high stability. The potential application of the nanocomposites prepared would be in packaging industry to extend the shelf life of products.
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