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Compatibilizing effect of halloysite nanotubes in polar-nonpolar hybrid system

机译:埃洛石纳米管在极性-非极性混合体系中的增容作用

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This article explores the effect of halloysite nanotubes (HNTs) and modified HNTs (M-HNTs) on the properties of immiscible blend system based on polar polyoxymethylene (POM) and nonpolar polypropylene (PP) polymers. HNTs have been modified by N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane (APTMS). Modification is confirmed by Fourier transform infrared spectroscopy (FTIR), also FTIR confirms the interaction between polymer blend and HNTs/M-HNTs. Morphology of the nanocomposites are demonstrated by scanning electron microscope (SEM) and dispersion of HNTs/M-HNTs are observed by transmission electron microscope (TEM). In nanocomposites, average dispersed domain sizes reduce in the presence of HNTs/M-HNTs but significant reduction has been observed in the case of M-HNT-filled nanocomposites rather than unmodified HNT-filled nanocomposites. The M-HNT acts as a reinforcing agent as well as bridging tool in polar-nonpolar hybrid system. Modification of HNTs brings compatibility in between the blend partners and reveals improved dynamic mechanical, thermal, and tensile properties than that of the pure blend system.
机译:本文探讨了埃洛石纳米管(HNT)和改性HNT(M-HNT)对基于极性聚甲醛(POM)和非极性聚丙烯(PP)聚合物的不混溶共混体系性能的影响。 HNT已被N-(β-氨基乙基)-γ-氨基丙基三甲氧基硅烷(APTMS)改性。改性通过傅里叶变换红外光谱(FTIR)进行了确认,FTIR也证实了聚合物共混物与HNT / M-HNT之间的相互作用。通过扫描电子显微镜(SEM)证明了纳米复合材料的形态,并且通过透射电子显微镜(TEM)观察了HNT / M-HNT的分散。在纳米复合材料中,存在HNTs / M-HNTs时,平均分散域尺寸会减小,但是在M-HNT填充的纳米复合材料而非未改性的HNT填充的纳米复合材料的情况下,观察到显着的减小。在极性-非极性混合系统中,M-HNT充当增强剂和桥接工具。 HNT的改性带来了共混物伙伴之间的兼容性,并显示出比纯共混物系统更好的动态机械,热和拉伸性能。

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