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首页> 外文期刊>Journal of Applied Polymer Science >Polyimide nanocomposite with a hexadecylamine clay: Synthesis and characterization
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Polyimide nanocomposite with a hexadecylamine clay: Synthesis and characterization

机译：带有十六烷基胺粘土的聚酰亚胺纳米复合材料：合成与表征

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摘要

A poly(amic acid) was prepared by the reaction of 3,3'-dihydroxybenzidine and pyromellitic dianhydride in NN-dimethylacetamide. Hexadecylamine was used as an organophilic alkylamine in organoclay. Cast films were obtained from blend solutions of the precursor polymer and the organoclay. The cast film was heat treated at different temperatures to create polyimide (PI) hybrid films. We set out to clarify the intercalation of PI chains to hexadecylamine-montmorillonite (C-16-MMT) and to improve thermal and tensile properties and the gas barrier. It was found that the addition of only a small amount of organoclay was enough to improve both the thermal and the mechanical properties of PIs. Maximum enhancement in the ultimate tensile strength for PI hybrids was observed for the blends containing 4% C-16-MMT. The initial modulus monotonically increased with further increases in C-16-MMT content. Water vapor permeability was decreased with increasing clay loading from 1 to 8 wt %. (C) 2002 Wiley Periodicals, Inc. [References: 25]
机译：通过3,3'-二羟基联苯胺与均苯四酸二酐在NN-二甲基乙酰胺中的反应制备聚酰胺酸。十六烷基胺用作有机粘土中的亲有机烷基胺。由前体聚合物和有机粘土的共混溶液获得流延膜。在不同温度下对流延膜进行热处理以产生聚酰亚胺（PI）杂化膜。我们着手阐明PI链与十六烷基胺-蒙脱石（C-16-MMT）的插入，并改善热和拉伸性能以及阻气性。发现仅添加少量的有机粘土足以改善PI的热性能和机械性能。对于含有4％C-16-MMT的共混物，观察到PI杂种的极限抗张强度得到最大增强。初始模量随着C-16-MMT含量的进一步增加而单调增加。水蒸气渗透性随着粘土负载从1wt％增加到8wt％而降低。 （C）2002 Wiley Periodicals，Inc. [参考：25]

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