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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Structure modification by solvent addition into TEOS/PDMS hybrid materials
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Structure modification by solvent addition into TEOS/PDMS hybrid materials

机译：通过将溶剂添加到TEOS / PDMS混合材料中进行结构改性

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摘要

Sol-gel method has been used to obtain TEOS/PDMS based hybrid materials. By maintaining constant both composition and reaction parameters, the hybrid structure of these materials has been modified by adding solvents during aging. Four different solvents have been chosen attending to their polarity. In order to study the effect of solvent addition during the whole aging period, such solvents were added at different times from gelation time to 10 days. The extension of hydrolysis and condensation step can be modified because of the increase of the mobility of reactants by solvent addition. Moreover, structural changes into the hybrid materials are produced due to different ratings in polycondensation process induced by chemical characteristics of added solvents. In that way, solvent polarities are closely related with properties and textural characteristics of these materials.
机译：溶胶-凝胶法已用于获得基于TEOS / PDMS的杂化材料。通过保持恒定的组成和反应参数，这些材料的杂化结构已通过在老化过程中添加溶剂进行了修饰。根据其极性选择了四种不同的溶剂。为了研究在整个老化期间添加溶剂的效果，从胶凝时间到10天的不同时间添加此类溶剂。水解和缩合步骤的延长可以修改，因为通过添加溶剂可以增加反应物的迁移率。此外，由于添加溶剂的化学特性引起的缩聚过程中的不同等级，导致了杂化材料的结构变化。这样，溶剂极性与这些材料的性质和质构特征密切相关。

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