Nanoclay-induced morphology development in chaotic mixing of immiscible polymers
Nanoclay-induced morphology development in chaotic mixing of immiscible polymers
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DOI：
10.1002/polb.20657
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发表时间：
2005-12-15
影响因子：
--
通讯作者：
Jana, SC
中科院分区：
文献类型：
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作者：
Dharaiya, DP;Jana, SC
本研究研究了层状硅酸盐粘土对两种不混溶聚合物聚丙烯 (PP) 和聚酰胺 6 (PA6) 混沌混合形态发展的作用。研究表明，粘土颗粒有助于产生更小尺寸和更窄尺寸分布的液滴，因为它们对 PP 域的破裂有直接影响。在实验中，首先将少量有机改性层状硅酸盐粘土混合在PP中，然后将该混合物与PA6在混沌混合器中共混。所有形态形式，例如片层、原纤维和液滴，都与没有粘土的情况一样。粘土颗粒降低了 PP 和 PA6 相之间的界面张力。结果，PP 域维持了层状和纤维状形式，并形成了细纤维。这些细小的原纤维又迅速分解成更小的液滴。还发现大部分粘土颗粒迁移到 PA6 相中，并在其通道中包含插入的 PA6 链。这些结果表明粘土颗粒不参与该体系的增容作用。 (c) 2005 年 Wiley 期刊公司。
This study investigated the role of layered silicate clay on morphology development in chaotic mixing of two immiscible polymers, polypropylene (PP) and polyamide 6 (PA6). The study showed that clay particles helped to produce droplets of much smaller size and with narrower size distribution due to their direct influence on the breakup of PP domains. In the experiments, a small quantity of organically modified layered silicate clay was initially mixed in PP and the mixture was blended with PA6 in a chaotic mixer. All morphological forms, such as lamellas, fibrils, and droplets were seen as in the case with no clay. The clay particles reduced interfacial tension between PP and PA6 phases. As a consequence, the PP domains sustained lamellar and fibrillar forms, and thin fibrils were formed. These thin fibrils in turn broke rapidly into smaller droplets. It was also found that a large fraction of clay particles migrated into PA6 phase and contained intercalated PA6 chains in their galleries. These results indicate that clay particles did not participate in compatibilization in this system. (c) 2005 Wiley Periodicals, Inc.