Property reinforcement of poly(propylene carbonate) by simultaneous incorporation of poly(lactic acid) and multiwalled carbon nanotubes
Property reinforcement of poly(propylene carbonate) by simultaneous incorporation of poly(lactic acid) and multiwalled carbon nanotubes
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DOI：
10.1016/j.compscitech.2013.08.010
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发表时间：
2013-10
影响因子：
9.1
通讯作者：
Guanghui Yang;Chengzhen Geng;Juanjuan Su;Weiwei Yao;Qin Zhang;Q. Fu
中科院分区：
文献类型：
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作者：
Guanghui Yang;Chengzhen Geng;Juanjuan Su;Weiwei Yao;Qin Zhang;Q. Fu
在这项研究中，通过直接熔融共混10重量%的聚乳酸（PLA）和1.5重量%的多壁碳纳米管（CNTs），可生物降解的聚（碳酸亚丙酯）（PPC）的屈服强度增加了一个数量级以上，其杨氏模量提高了8倍。同时，PPC保持了较高的断裂伸长率。通过单独添加PLA或CNT不能观察到这种整体性能增强。在室温下，所获得的增强PPC的力学性能与一些传统的石油基聚合物如低密度聚乙烯、高密度聚乙烯和聚丙烯（PP）的力学性能相当或甚至更好。连同良好的生物降解性和优异的导电性，在这项工作中制备的PPC/PLA/CNT复合材料表现出作为一个可持续的替代石油基聚合物，如PP在室温左右的潜力。
In this study, by directly melt-blending with 10 wt% poly(lactic acid) (PLA) and 1.5 wt% multiwalled carbon nanotubes (CNTs), yield strength of a biodegradable poly(propylene carbonate) (PPC) was increased more than one order of magnitude, and its Young’s modulus was enhanced by 8 times. Meanwhile, the high elongation at break of PPC was maintained. This overall property reinforcement could not be observed by adding either PLA or CNTs separately. At room temperature, the obtained mechanical properties of the reinforced PPC are comparable to or even better than those of some traditional petroleum-based polymers such as low density polyethylene, high density polyethylene and polypropylene (PP). Together with good biodegradability and excellent conductivity, the PPC/PLA/CNT composites prepared in this work exhibit a potential to be used as a sustainable alternative to petroleum-based polymers such as PP around room temperature.