摘要
利用Si-H封端的聚二甲基硅氧烷（PHMS）与烯丙基聚氧乙烯聚氧丙烯醚（F6）的硅氢化加成反应合成聚醚-b-聚硅氧烷中间体（PESO），再用马来酸酐对其进一步改性，合成了羧基化聚醚有机硅（CPES），用红外光谱（IR）、核磁共振氢谱（^1H—NMR）确认了CPES的结构，然后用原子力显微镜（AFM）对基于CPES及其构筑的超分子膜形貌进行了研究。结果表明，由CPES与N-β-氨乙基γ-氨丙基聚二甲基硅氧烷（ASO-1）在乙酸乙酯稀溶剂介质中自组装构筑的超分子膜CPES／ASO-1，其形貌完全不同于结构基元CPES与ASO-1，在其表面不仅有众多细小亮斑存在，而且还分布有一定数目形体较大、环形亮斑套有小亮斑的分子聚集体。其原因可能是离子化后的CPES胶束在ASO11分子周围发生单层或多层吸附、团聚而产生的。
An intermediate, hydroxyl terminated polyther-b-polydimethylsiloxane （PESO）, is synthesized by hydrosilylation of Si-H terminated polydimethylsiloxane （PHMDS） with allyl polyoxyethylenepolyoxypropylene ehter （F6）. Then based upon the intermediated, a carboxyl modified polyether-b-polydimethylsiloxane （CPES） is prepared by reaction of maleic anhydride with PESO. After chemical structures of the synthesized polysiloxanes are characterized by IR and ^1H-NMR spectra, the film morphology of CPES as well as a supermolecule self-assembled from CPES and N-β- arninothyl-γ-aminopropyl polydimethylsiloxane（ASO-1） are investigated by atomic force microscope （AFM）. The experimental results indicate that the supermolecule self-assembles from CPES and ASO-1 in ethyl acetate solution possesses film morphology very different from CPES and ASO-1. There are not only many small bright dots, but also some aggregates of big size and marvelous, a dot circled by dots morphology locate on the film surface. It is estimated that the marvelovs, a dot circled by dots morphology possibly results from the aggregates of different inoic CPES micelles adsorbed on the curled cationic ASO-1 molecule surfaces.
出处
《材料导报》
CSCD
北大核心
2008年第5期130-133,共4页
Materials Reports
基金
国家自然科学基金(50373025)
陕西省科学技术计划发展项目(2006K07-G22)
关键词
羧基化聚醚有机硅
聚硅氧烷
氨基硅
超分子
形貌
carboxyl modified polyether-b-polydimehteylsioxane, polysiloxane, amino functional polysiloxane, supermolecule, film morphology
