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首页> 外文期刊>Journal of Applied Polymer Science >Oxazoline functionalized polystyrene as a compatibilizer for dispersion of organoclay in polyphenylene ether blends
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Oxazoline functionalized polystyrene as a compatibilizer for dispersion of organoclay in polyphenylene ether blends

机译：恶唑啉官能化的聚苯乙烯作为增容剂，用于有机粘土在聚苯醚共混物中的分散

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摘要

Addition of external additives as compatibilizers is known to improve exfoliation of nanoclay in various polymeric matrices. This study found that oxazoline functionalized polystyrene (OPS) is an effective compatibilizer to improve the dispersion of organoclay (Cloisite 20A) in polyphenylene ether (PPE)-based blends. The main objective of this study was to understand the mechanism of OPS as a compatibilizer for dispersion of nanoclay in PPE-based blends and evaluate whether the master-batch of organoclay in OPS can be used to disperse nanoclay in various PPE-based blends irrespective of the type of the other polymer component in the blend. Although the addition of OPS to polystyrene (PS) alone resulted in mere intercalation of organoclay, its addition to PPE-based blends was found to result in mixed clay dispersion of intercalated, exfoliated, and to some extent collapsed phases. Addition of OPS-organoclay combination in master-batch mode showed similar results as direct mode addition. At least 15% of OPS was required for effective dispersion of Cloisite 20A in PPE-high impact polystyrene blend. The possible role of solubility of OPS in the matrix and high melt shear of PPE-based matrix was investigated to understand the exclusive action of OPS in PPE-based blends. X-ray diffraction and transmission electron microscopy techniques were used to study the organoclay dispersion. Further master batches of organoclay in neat OPS and OPS containing PPE-based blends were evaluated in other PPE-based commercial blends. Of the various blends studied, blend containing phosphite additive showed better dispersion of organoclay.
机译：已知添加外部添加剂作为增容剂可改善纳米粘土在各种聚合物基质中的剥离。这项研究发现，恶唑啉官能化的聚苯乙烯（OPS）是一种有效的增容剂，可改善有机粘土（Cloisite 20A）在基于聚苯醚（PPE）的共混物中的分散性。这项研究的主要目的是了解OPS作为纳米粘土在PPE基共混物中分散的增容剂的机理，并评估OPS中有机粘土的母料是否可用于将纳米粘土分散在各种PPE基共混物中，而与共混物中其他聚合物组分的类型。尽管仅在聚苯乙烯（PS）中添加OPS只会导致有机粘土的插层，但发现将其添加到PPE基共混物中会导致插层，剥离和某种程度上塌陷相的混合粘土分散。以母料模式添加OPS-有机粘土组合显示出与直接模式添加相似的结果。有效地将Cloisite 20A分散在PPE-高抗冲聚苯乙烯共混物中需要至少15％的OPS。为了了解OPS在基于PPE的共混物中的排他性作用，研究了OPS在基质中的溶解性和PPE基的高熔体剪切的可能作用。 X射线衍射和透射电子显微镜技术被用于研究有机粘土分散体。在其他基于PPE的商业共混物中，还评估了纯净OPS和含OPS的PPE基共混物中有机粘土的其他母料。在研究的各种共混物中，含有亚磷酸酯添加剂的共混物表现出更好的有机粘土分散性。

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