Poly(lactic acid)/natural rubber/cellulose nanocrystal bionanocomposites. Part II: Properties evaluation
Poly(lactic acid)/natural rubber/cellulose nanocrystal bionanocomposites. Part II: Properties evaluation
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DOI：
10.1016/j.carbpol.2013.03.091
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发表时间：
2013-07-25
影响因子：
11.2
通讯作者：
Angel Lopez-Manchado, Miguel
中科院分区：
文献类型：
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作者：
Bitinis, Natacha;Fortunati, Elena;Angel Lopez-Manchado, Miguel
研究了聚乳酸/天然橡胶/纤维素纳米晶（CNC）生物纳米复合材料的结晶性能、力学性能和生物降解性能。在本研究中使用三种类型的CNC，一种未改性的CNC（CNC）、长烷基链接枝CNC（C18-g-CNC）和PLA接枝CNC（PLA-g-CNC）。CNC改性决定了纳米晶体对聚合物的亲和力，并反映了最终的性能。有趣的是，PLA-g-CNC在生物基PLA/NR共混物中充当PLA基质的成核剂。报道了良好的机械性能，因为生物纳米复合材料在高达3重量%的浓度下保持了高的断裂伸长率。纤维素纳米晶体。此外，崩解研究证实，材料在堆肥中一个月后完全崩解。(C)2013爱思唯尔有限公司保留所有权利。
The crystallization, mechanical and biodegradation properties of poly(lactic acid)/natural rubber/cellulose nanocrystals (CNC) bionanocomposites were evaluated. Three types of CNC were used in this study, one unmodified (CNC), long alkyl chain grafted CNC (C18-g-CNC) and PLA grafted CNC (PLA-g-CNC). The CNC modifications determined the affinity of the nanocrystals toward the polymers and reflected on the ultimate properties. Interestingly, PLA-g-CNC acted as a nucleating agent for the PLA matrix in the bio-based PLA/NR blend. Good mechanical properties were reported, as the bionanocomposites maintained a high elongation at break for a concentration up to 3 wt.% of cellulose nanocrystals. Moreover, the disintegration study confirmed that the materials completely disintegrated after one month in compost. (C) 2013 Elsevier Ltd. All rights reserved.