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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and investigation of oligosiloxanes containing gamma-trimethylsiloxy-propyl or gamma-hydroxy-propyl groups
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Synthesis and investigation of oligosiloxanes containing gamma-trimethylsiloxy-propyl or gamma-hydroxy-propyl groups

机译：含有γ-三甲基甲硅烷氧基-丙基或γ-羟基-丙基的低聚硅氧烷的合成和研究

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摘要

Oligosiloxanes having different distributions of Si-H groups were prepared, and the addition of Si-H bonds to C C double bounds of trimethyl(2-propenyloxy)silane was utilized to obtain oligosiloxanes having different distributions of gamma-trimethylsiloxy-propyl or gamma-hydroxy-propyl groups as substituents. The oligosiloxanes were characterized by IR and H-1-NMR spectroscopy. Viscosity was studied to investigate the effects of the substituents. Differential scanning calorimetry (DSC) was used to investigate the thermal behaviour of these oligosiloxanes. It was found that they are completely amorphous materials and, hence, show only a glass transition. We found that the viscosities and glass transition temperatures of these materials increased with the increasing of the number of substituents. Hydrogen bonds have a considerable influence on the increase of the viscosities and glass transition temperatures of oligosiloxanes. (C) 2002 Wiley Periodicals, Inc. [References: 12]
机译：制备具有不同Si-H基团分布的低聚硅氧烷，并在三甲基（2-丙烯氧基）硅烷的CC双键上添加Si-H键，从而获得具有不同分布的γ-三甲基甲硅烷氧基-丙基或γ-羟基的低聚硅氧烷。 -丙基作为取代基。通过IR和H-1-NMR光谱表征低聚硅氧烷。研究粘度以研究取代基的作用。差示扫描量热法（DSC）用于研究这些低聚硅氧烷的热行为。发现它们是完全无定形的材料，因此仅显示出玻璃化转变。我们发现，这些材料的粘度和玻璃化转变温度随取代基数量的增加而增加。氢键对低聚硅氧烷的粘度和玻璃化转变温度的增加具有相当大的影响。 （C）2002 Wiley Periodicals，Inc. [参考：12]

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