A green biocomposite comprising chitosan dispersed in partially cross-linked natural rubber matricesd was prepared. The starting materials and biocomposites were characterized by means of Fourier transform–infrared spectroscopy, thermogravimetric analysis, and scanning electron microscopy. Chitosan was found well dispersed in partially cross-linked natural rubber matrices indicating that natural rubber latex is successfully stabilized by sodium dodecyl sulfate. The swelling study of the biocomposites was carried out in several solvents. The biocomposites were used for the controlled-release of urea. The release behavior was found consistent, controlled, and prolonged over a period of 72 h. The Korsmeyer–Peppas model was applied to the experimental data and the possible release mechanism was found Fickian diffusion, which indicates that the polymer relaxation time is much greater than the characteristic solvent diffusion time.

制备了包含分散在部分交联的天然橡胶基质中的壳聚糖的绿色生物复合材料。通过傅立叶变换红外光谱，热重分析和扫描电子显微镜对原材料和生物复合材料进行了表征。发现壳聚糖很好地分散在部分交联的天然橡胶基质中，表明天然橡胶胶乳已被十二烷基硫酸钠成功稳定。生物复合材料的溶胀研究是在几种溶剂中进行的。生物复合物用于尿素的控释。发现释放行为是一致的，受控的，并且延长了72小时。将Korsmeyer-Peppas模型应用于实验数据，发现可能的释放机理为Fickian扩散，