김태정 오영제 2024-01-21T01:35:19Z 2024-01-21T01:35:19Z 2021-09-06 2007-01 1225-5475 https://pubs.kist.re.kr/handle/201004/134762 Nanoporous silica aerogels with various surface modifiers were prepared by ambient drying process. Tetraethylortho-silicate (TEOS) were used a raw material. Ambient drying process for various surface modifier was studied in the pointof view of a crack-free monolith and thin films and low cost. Various kinds of surface modifiers like as hexamethyl-disilazane (HMDSZ), trimethlychlorosilane (TMCS), methlytriethoxylsilane (MTES), and methlytrimethoxysilane (MTMS)were studied in order to enhance hydrophobicity for the silica aerogel. Surface modified aerogels were evaluated by FT-IR, TG, BET, SEM and wetting angle measurement. Homogeneous and crack-free aerogels were obtained by modifyingthe HMDSZ and the TMCS. However silica xerogel was obtained when modified with MTMS, MTES. 한국센서학회 상압건조 나노다공성 실리카 에어로젤에 대한 개질제 효과 Effect of surface modifiers on the nano porous silica aerogels prepared by ambient drying process Article 2 센서학회지, v.16, no.1, pp.77 - 83 센서학회지 16 1 77 83 kci ART001040382 aerogel surface modifier ambient drying TEOS hydrophobicity