화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.34, No.6, 1827-1833, June, 2017
DOI10.1007/s11814-017-0074-5  Export Citation
Iso-propanol assisted preparation of individualized functional palygorskite fibers and its impact on improving dispersion abilities in polymer nanocomposites
Lingli Ni†, Pengyin Zhang, Jing Chen, Jinglong Jiang, and Shijie Ding
  • Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, College of Chemical Engineering, Huaiyin Institute of Technology, 223003 Huaian, P. R. China
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Palygorskite (PAL) as a natural one-dimensional nanomaterial has attracted tremendous attention as reinforcement agent in polymer nanocomposites. But its intrinsic existing form of aggregates or bundles and hydrophilic properties, highly requires an eco-efficient and environmentally benign approach for both of the disaggregation and organo-modification of PAL. We report a facile and effective process to achieve individualized organo-modified PAL fibers. It was carried out through surface modification reactions in the form of PAL iso-propanol gels with various alkyl and functional silanes. In contrast to the modifications in highly toxic solvent of toluene, reactions in iso-propanol make it possible to modify the surface of individual PAL fibers to obtain isolated organo-modified PAL fibers. With such a relatively green procedure, even higher amount of organic substituent has been grafted on to the surface of PAL fibers. Consequently, excellent dispersion of modified PAL nanofibers in acrylate polymer coatings was achieved, which exhibits outstanding corrosion protection properties.
Keywords:Palygorskite;Organosilane;Iso-propanol Gel;Modification;Nanocomposite
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