Effect of SEBS on morphology, thermal, and mechanical properties of PP/organoclay nanocomposites
Effect of SEBS on morphology, thermal, and mechanical properties of PP/organoclay nanocomposites
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DOI：
10.1007/s00289-012-0780-4
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发表时间：
2012-06
期刊：
影响因子：
3.2
通讯作者：
Z. Vuluga;D. Panaitescu;C. Radovici;C. Nicolae;Michael Iorga
中科院分区：
文献类型：
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作者：
Z. Vuluga;D. Panaitescu;C. Radovici;C. Nicolae;Michael Iorga
为了提高聚丙烯（PP）在汽车工业中的竞争力，需要同时提高其刚度和韧性。本文的目的是研究苯乙烯-（乙烯-丁烯）-苯乙烯三嵌段共聚物（SEBS）对聚丙烯的力学性能和热性能的影响，在存在和不存在纳米粘土。研究了SEBS在PP中的用量对基体刚韧性平衡的影响。为此目的，SEBS域的大小和分布在PP/SEBS共混物测定通过原子力显微镜和相关的力学性能。采用X射线衍射和差示扫描量热法研究了SEBS对PP/有机粘土纳米复合材料中PP结晶结构的影响，指出SEBS与纳米粘土的协同作用。此外，与不含SEBS的复合材料相比，在含SEBS的纳米复合材料的情况下获得了冲击强度的大的改善（几乎22倍）。
A simultaneously increase in stiffness and toughness is needed for improving polypropylene (PP) competitiveness in automotive industry. The aim of this paper is to investigate the effects of styrene-(ethylene-co-butylene)-styrene triblock copolymer (SEBS) on mechanical and thermal properties of PP, in the presence and the absence of nanoclay. The amount of SEBS in PP was ranged to obtain the matrix with the most favorable stiffness–toughness balance. For this purpose, SEBS domain size and distribution in PP/SEBS blends was determined by means of atomic force microscopy and correlated with mechanical properties. The influence of SEBS on the crystalline structure of PP in PP/organoclay nanocomposites was investigated by X-ray diffraction and differential scanning calorimetry, a synergistic effect of SEBS and nanoclay being pointed out. Moreover large improvement in the impact strength (almost 22 times) was obtained in the case of SEBS-containing nanocomposite in comparison with the composite without SEBS.