Novel reactive polymerizable nonyl phenol ethoxylate surfactants as emulsifier in non-aqueous emulsion polymerization
Novel reactive polymerizable nonyl phenol ethoxylate surfactants as emulsifier in non-aqueous emulsion polymerization
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新型反应性可聚合壬基酚乙氧基化物表面活性剂作为非水乳液聚合中的乳化剂
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Khaled A. AlJenady
中科院分区：
文献类型：
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作者：
A. Atta;Amro K. F. Dyab;H. Al‐Lohedan;Khaled A. AlJenady
本工作合成了一系列新型的非离子型可聚合壬基酚聚氧乙烯醚（NPE），作为有机溶剂可溶性表面活性剂。壬基、苯基和丙烯基作为亲溶剂链段。改性后的聚氧乙烯、马来酸酯链段表现为疏溶剂链段。以壬基酚聚氧乙烯醚为非离子表面活性剂，与马来酸酐反应，再与聚乙二醇酯化，合成了新型双功能表面活性剂。通过13 C和1H NMR分析确定了所制备的表面活性剂的化学结构。用表面张力法测定了这些表面活性剂在甲酰胺、甲苯和水溶液中的表面活性。讨论了有机溶剂可溶性可聚合NPE表面活性剂的表面活性与分子结构的关系以及有机溶剂的种类和结构。结果表明，所制备的可聚合NPE表面活性剂对极性和非极性有机溶剂的表面张力均有降低作用。由吸附等温线测定了表面活性剂的表面过剩浓度（Γmax）、分子界面面积（Amin）和表面张力降低效果等表面参数。将制得的可聚合表面活性剂用于非水乳液共聚制备交联N-异丙基丙烯酰胺（NIPAAm）与2-丙烯酰胺基-2-甲基丙磺酸（AMPS）共聚物微凝胶。
In this work, new series of modified nonionic polymerizable nonyl phenol ethoxylates (NPEs) were synthesized as organic solvent-soluble surfactants. The nonyl, phenyl and propenyl groups were acted as solvophilic segment. The modified polyoxyethylene, maleate chains were behaved as solvophobic segment. The new bifunctional surfmers were prepared by reacting polyoxyethylene 4-nonyl-2-propylenephenol nonionic reactive surfactant with maleic anhydride followed by esterification with poly(ethylene glycol). The chemical structure of the prepared surfactants was determined by 13C and 1H NMR analyses. The surface activities of these surfactants were determined in organic solvents including formamide, toluene and aqueous water solvent from surface tension measurements. The relationship between the surface activity and molecular structure of the organic solvent-soluble polymerizable NPE surfactants as well as the type and structure of organic solvents were discussed. The results showed that the prepared polymerizable NPE surfactants have been reduced the surface tension of both polar and non-polar organic solvents. Surface parameters such as surface excess concentration (Γmax), the area per molecule at interface (Amin) and the effectiveness of surface tension reduction were determined from the adsorption isotherms of the prepared surfactants. The prepared polymerizable surfactant used to prepare crosslinked N-isopropylacrylamide (NIPAAm) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS) copolymer microgel based on nonaqueous emulsion copolymerization.