Castellano M, Gandini A, Fabbri P, Belgacem M N
Dipartimento di Chimica e Chimica Industriale, Università di Genova, Via Dodecaneso, 31-16146 Genoa, Italy.
J Colloid Interface Sci. 2004 May 15;273(2):505-11. doi: 10.1016/j.jcis.2003.09.044.
Different cellulose substrates and organosolv lignin were treated heterogeneously with organic solutions of trialkoxysilanes bearing variable function on the forth substituent. It was shown unambiguously for the first time that Si-OR does not react with the hydroxy groups of cellulose even at high temperature, whereas it condenses with the phenolic OH of lignin. The addition of moisture to these systems induces the partial hydrolysis of the siloxane moieties and the ensuing silanol groups can then react with the cellulose OH, but only at high temperature. Using the latter systems and a siloxane bearing a polymerizable function, it was possible to attach poly(methylmethacrylate) chains to the surface of cellulose fibres through a two-step procedure.
用在第四个取代基上带有可变官能团的三烷氧基硅烷的有机溶液对不同的纤维素底物和有机溶剂木质素进行非均相处理。首次明确表明，即使在高温下，Si-OR也不会与纤维素的羟基反应，而它会与木质素的酚羟基缩合。向这些体系中添加水分会导致硅氧烷基团部分水解，随后生成的硅醇基团可以与纤维素的OH反应，但仅在高温下。使用后一种体系和带有可聚合官能团的硅氧烷，通过两步法可以将聚（甲基丙烯酸甲酯）链连接到纤维素纤维表面。
