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首页> 外文期刊>Journal of Applied Polymer Science >Flour rice husk as filler in block copolymer polypropylene: Effect of different coupling agents
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Flour rice husk as filler in block copolymer polypropylene: Effect of different coupling agents

机译：面粉米糠作为嵌段共聚物聚丙烯的填料：不同偶联剂的作用

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Flour rice husk (FRH) was employed as a filler in block copolymer polypropylene (PPB) in order to prepare polymer-based reinforced composites. Four coupling agents were selected to modify the surface of the rice husk in the composite materials, including two types of functionalized polymers [PP homopolymer grafted with maleic anhydride (MA-PP) and an elastomer styrene-ethylene-butadiene-styrene triblock copolymer grafted with MA (MA-SEBS)] and two bifunctional organometallic coupling agents (silane and titanate with linear low-density polyethylene as a carrier). The influence of each type of coupling agent on the interfacial bonding strength was studied by dynamic mechanical analysis, scanning electronic microscopy, and rheological tests. The results showed that strong interactions were formed between the coupling agents and the filler surface. The addition of a coupling agent with an elastomeric carrier (MA-SEBS) increased the loss tangent and reduced the storage modulus of the composite. A similar but less intense effect was observed for the titanate coupling agent. However, an antagonistic performance was obtained when MA-PP and silane were employed as coupling agents. In addition, when the percentage of MA-SEBS was increased, the impact properties of FRH/PPB blends were improved and the strength was reduced. (c) 2005 Wiley Periodicals, Inc.
机译：为了制备基于聚合物的增强复合材料，面粉稻壳（FRH）被用作嵌段共聚物聚丙烯（PPB）中的填料。选择了四种偶联剂来修饰复合材料中的稻壳表面，包括两种类型的官能化聚合物[马来酸酐接枝的PP均聚物（MA-PP）和马来酸酐接枝的弹性体苯乙烯-乙烯-丁二烯-苯乙烯三嵌段共聚物MA（MA-SEBS）]和两种双功能有机金属偶联剂（硅烷和钛酸酯，以线性低密度聚乙烯为载体）。通过动态力学分析，扫描电子显微镜和流变测试研究了每种偶联剂对界面结合强度的影响。结果表明，偶联剂与填料表面之间形成了很强的相互作用。偶联剂与弹性体载体（MA-SEBS）的添加增加了损耗角正切值并降低了复合材料的储能模量。对于钛酸酯偶联剂观察到类似但强度较小的作用。然而，当MA-PP和硅烷用作偶联剂时，获得了拮抗性能。另外，当MA-SEBS的百分比增加时，FRH / PPB共混物的冲击性能提高并且强度降低。 （c）2005年Wiley Periodicals，Inc.

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