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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of VB-a/POSS Hybrid Monomer and Its Polymerization of Polybenzoxazine/POSS Hybrid Nanocomposites
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Preparation of VB-a/POSS Hybrid Monomer and Its Polymerization of Polybenzoxazine/POSS Hybrid Nanocomposites

机译：VB-a / POSS杂化单体的制备及其聚苯并恶嗪/ POSS杂化纳米复合材料的聚合

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摘要

A benzoxazine monomer (VB-a) containing an allyl groups was synthesized through the Mannich condensation of bisphenol A, formaldehyde, and allylarnine (bisphenol-A and allylamine as VB-a). This monomer was then reacted with polyhedral oligomeric silsesquioxane (POSS) through hydrosilylation, followed by thermal curing to form poly(VB-a)/POSS hybrid nanocomposites. The curing behavior of the nanocomposites was monitored using Fourier transform infrared spectroscopy (FTIR), and their thermal and morphological properties were investigated through thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA), and scanning electron microscopy. DMA revealed that the glass transition temperatures of the poly(VB-a)/POSS nanocomposites were higher than that of the pristine poly(VB-a), presumably because the POSS cages effectively hindered the motion of the polyrner chains. TGA confirmed that the thermal degradation temperatures and char yields of the polybenzoxazines increased after incorporation of the POSS moieties. 0 2008 wiley Periodicals, Inc. J Appl Polym Sci 111: 628-634, 2009
机译：通过双酚A，甲醛和烯丙胺的曼尼希缩合反应合成含有烯丙基的苯并恶嗪单体（VB-a）（双酚A和烯丙胺为VB-a）。然后通过氢化硅烷化将该单体与多面体低聚倍半硅氧烷（POSS）反应，然后热固化以形成聚（VB-a）/ POSS杂化纳米复合材料。使用傅里叶变换红外光谱（FTIR）监测纳米复合材料的固化行为，并通过热重分析（TGA），动态力学分析（DMA）和扫描电子显微镜研究其热学和形态学性质。 DMA显示，聚（VB-a）/ POSS纳米复合材料的玻璃化转变温度高于原始聚（VB-a），这可能是因为POSS笼有效地阻碍了聚纳链的运动。 TGA证实，结合POSS部分后，聚苯并恶嗪的热降解温度和炭收率提高。 0 2008威利期刊社，美国应用科学杂志111：628-634，2009

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