Wang Bo, Nie Kai, Xue Xiao-Rong, Lin Fu-Hua, Li Xiang-Yang, Xue Yong-Bing, Luo Jun
School of Chemical and Biological Technology, Taiyuan University of Science and Technology, Taiyuan 030021, China.
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
Polymers (Basel). 2018 Apr 2;10(4):393. doi: 10.3390/polym10040393.
Microcrystalline cellulose (MCC) offers great potential to improve the mechanical and crystallization properties of isotactic polybutene-1 (iPB) because of its low cost, biodegradability, renewability and excellent mechanical properties. However, the compatibility of polar MCC and non-polar iPB is poor. In this study, maleic anhydride grafted polybutene (MAPB) was prepared by the solution method and was used as a compatibilizer in the fabrication of iPB/MCC composites by using a twin screw extruder. The ultimate tensile strength, tensile modulus, flexural strength, flexural modulus of the iPB/MCC composites increased by 3.1%, 16.5%, 10.7%, 6.5%, respectively, compared with that of pure iPB. With MAPB addition, these values increased by 17.2%, 31%, 17.5% and 10%, respectively, compared with that of pure iPB. The heat-distortion temperature and thermal-decomposition temperature of all composites increased with an increased MCC content. The non-isothermal crystallization of the iPB/MCC composites shows that MCC addition can promote iPB crystallization, because the non-isothermal crystallization curve of the composites moves toward a higher temperature, especially after MAPB addition. Scanning electron micrographs indicate that the compatibility of the iPB/MCC has been enhanced significantly.
微晶纤维素（MCC）因其成本低、可生物降解、可再生以及优异的机械性能，在改善等规聚丁烯-1（iPB）的机械和结晶性能方面具有巨大潜力。然而，极性的MCC与非极性的iPB相容性较差。本研究采用溶液法制备了马来酸酐接枝聚丁烯（MAPB），并将其用作双螺杆挤出机制备iPB/MCC复合材料的增容剂。与纯iPB相比，iPB/MCC复合材料的极限拉伸强度、拉伸模量、弯曲强度、弯曲模量分别提高了3.1%、16.5%、10.7%、6.5%。添加MAPB后，与纯iPB相比，这些值分别提高了17.2%、31%、17.5%和10%。所有复合材料的热变形温度和热分解温度均随MCC含量的增加而升高。iPB/MCC复合材料的非等温结晶表明，添加MCC可促进iPB结晶，因为复合材料的非等温结晶曲线向更高温度移动，尤其是添加MAPB后。扫描电子显微镜照片表明，iPB/MCC的相容性得到了显著增强。
