期刊
EUROPEAN POLYMER JOURNAL
卷 46, 期 4, 页码 609-620出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2009.12.025
关键词
Cellulose; Whiskers; Microfibrils; Nanocomposites; Natural rubber
资金
- Hassan II Academy of Sciences and Engineering
- French Ministry of Foreign Affairs [6046]
- Agence Universitaire de la Francophonie (AUF)
Cellulose whiskers and microfibrillated cellulose (MFC) were extracted from the rachis of date palm tree and characterized. These cellulosic nanoparticles were used as reinforcing phase to prepare nanocomposite films using latex of natural rubber as matrix. These films were obtained by the casting/evaporation method. The properties of the ensuing nanocomposite films were investigated using differential scanning calorimetry, toluene and water uptake experiments, dynamic mechanical analysis and tensile tests. The stiffness of the natural rubber was significantly increased above its glass rubber transition temperature upon nanoparticles addition. The reinforcing effect was shown to be higher for nanocomposites with MFC compared to whiskers. It was ascribed to the higher aspect ratio and possibility of entanglements of the former. The presence of residual lignin, extractive substances and fatty acids at the surface of MFC was also suggested to promote higher adhesion level with the polymeric matrix. (C) 2010 Elsevier Ltd. All rights reserved.
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