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首页> 外文期刊>Journal of Applied Polymer Science >Structure-related behavior of hybrid organic-inorganic materials prepared in different synthesis conditions from Zr-based NBBs and 3-methacryloxypropyl trimethoxysilane
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Structure-related behavior of hybrid organic-inorganic materials prepared in different synthesis conditions from Zr-based NBBs and 3-methacryloxypropyl trimethoxysilane

机译：Zr基NBB和3-甲基丙烯酰氧基丙基三甲氧基硅烷在不同合成条件下制备的有机-无机杂化材料的结构相关行为

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摘要

The copolymerization of zirconium oxo-clusters (Zr12) with 3-methacryloxypropyl (trimethoxy)silane (MPTMS), using a Si/Zr molar ratio of 4, was investigated. The hybrid samples were prepared both with and without organosilane prehydrolysis. Differential scanning calorimetry (DSC), multinuclear liquid, and solid state NMR analyses and Fourier transform infrared (FTIR) spectroscopy were used to characterize the hybrid materials and study the influence of synthesis conditions on condensation and polymerization. The degree of condensation (DOC) of the silsesquioxane network and the polymerization yield are generally high. However, the organosilane prehydrolysis step leads to the reduction of the extent of phase interaction, thus favoring the phase separation between silica-zirconia-based domains. Dynamic mechanical spectroscopy (DMS) analyses were performed on the hybrid polymers obtained by means of the two synthetic pathways. The sample prepared without the organosilane prehydrolysis step presents a higher glass transition temperature (T _g) than the one with silane prehydrolysis. By heating above the T _g, the samples retain shape and size, due to the lack of viscous flow.
机译：使用4的Si / Zr摩尔比研究了氧化锆簇团（Zr12）与3-甲基丙烯酰氧基丙基（三甲氧基）硅烷（MPTMS）的共聚合。在有和没有有机硅烷预水解的情况下制备杂化样品。使用差示扫描量热法（DSC），多核液体和固态NMR分析以及傅立叶变换红外（FTIR）光谱来表征杂化材料，并研究合成条件对缩合和聚合的影响。倍半硅氧烷网络的缩合度（DOC）和聚合产率通常较高。然而，有机硅烷的预水解步骤导致相相互作用程度的降低，因此有利于基于二氧化硅-氧化锆的区域之间的相分离。对通过两种合成途径获得的杂化聚合物进行了动态机械光谱（DMS）分析。没有进行有机硅烷预水解步骤制备的样品比具有硅烷预水解的样品具有更高的玻璃化转变温度（T_g）。通过加热至T_g以上，样品由于缺乏粘性流而保持形状和尺寸。

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