单层
单体
红外光谱学
化学
吸附
水溶液
高分子化学
聚合物
傅里叶变换红外光谱
氢键
结晶学
材料科学
化学工程
分子
有机化学
工程类
生物化学
作者
Chwan‐Hwa Chiang,Hatsuo Ishida,Jack L. Koenig
标识
DOI:10.1016/0021-9797(80)90209-x
摘要
The structure of γ-aminopropyltriethoxysilane (APS) has been studied in aqueous solution and as a solid using Fourier transform infrared spectroscopy. The monomeric aminosilane forms an internal cyclic chelate structure when hydrolyzed. Two vibrational bands have been found near 1575 and 1600 cm−1 in condensed aminopropylsiloxane polymer. The band at 1575 cm−1 is assigned to the NH2 deformation mode of the acceptor amine groups involved in strong hydrogen bonding and the band at 1600 cm−1 is assigned to the NH2 groups. Heat treatment causes the formation of nonring chain-structured aminosilanes. In the study of the structure of APS coupling agent on high-surface-area silica gel (Cab-O-Sil) and E-glass fibers, it was found that the aminosilane adsorbed on silica as essentially a monolayer and the amino group chemically interacted with the glass surface. The adsorbed APS on E-glass fiber exists as a multilayer, and formed a predominately cyclic ring structure in the coupling agent interphase.
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