Hybrid organic-inorganic gels that are melting gels

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Sol-Gel Science and Technology Pub Date : 2024-09-13 DOI:10.1007/s10971-024-06524-4

L. C. Klein, Andrei Jitianu

引用次数: 0

Abstract

Ever since the observation in 2001 that some organic-inorganic silica hybrid gels are rigid at room temperature but soften and flow around 100 °C, there has been interest in so-called melting gels. Following heating to 150 °C or higher, the gels no longer soften and are considered consolidated hybrid glasses. The catalog of melting gels has grown over the past 20 years. Longer chain substitutions and other functional groups have been attached to the ≡Si-O-Si≡ molecular species. The substitutions make it possible to adjust the glass transition, the viscosity, and the temperature range of their usefulness.

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属于熔融凝胶的有机-无机混合凝胶

自从 2001 年观察到某些有机-无机二氧化硅杂化凝胶在室温下是刚性的，但在 100 °C 左右会软化和流动之后，人们对所谓的熔融凝胶产生了兴趣。加热到 150 ℃ 或更高温度后，凝胶不再软化，被视为固化的混合玻璃。在过去的 20 年中，熔融凝胶的种类不断增加。在≡Si-O-Si≡分子中加入了更长的取代链和其他官能团。这些取代基可以调整玻璃化转变、粘度以及它们的使用温度范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.