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首页> 外文期刊>Macromolecular symposia >Modification of silica by liquid polybutadienes containing alkoxysilane groups
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Modification of silica by liquid polybutadienes containing alkoxysilane groups

机译：含烷氧基硅烷基团的液态聚丁二烯对二氧化硅的改性

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摘要

The present work describes a method to modify the surface of silica, reducing its polar character and making it compatible and dispersible into hydrocarbon based elastomers. A liquid low molar mass polybutadiene (PB) was grafted with mercaptopropyltrimethoxysilane (MPTS) via radical addition of the thiol group to the double bonds. The silanized PB was reacted with silica via thermal condensation with its silanol groups. 29Si NMR spectra showed that the condensation reaction of the trifunctional silane involved one or two alkoxy groups, while the third alkoxy group remained unreacted, probably for steric reasons. The characterization of the functionalized silica particles was performed by contact angle measurements and TGA analysis.
机译：本工作描述了一种改性二氧化硅表面，降低其极性特征并使其相容并分散于烃基弹性体中的方法。通过将巯基自由基加成到双键上，将巯基丙基三甲氧基硅烷（MPTS）接枝液态低摩尔质量的聚丁二烯（PB）。硅烷化的PB通过其硅烷醇基团的热缩合而与二氧化硅反应。 29Si NMR光谱表明，三官能硅烷的缩合反应涉及一个或两个烷氧基，而第三个烷氧基仍未反应，这可能是出于空间原因。通过接触角测量和TGA分析进行官能化二氧化硅颗粒的表征。

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