中文摘要：

采用大单体法合成梳型表面活性剂聚（苯乙烯－co-马来酸酐）-g-（聚乙二醇单甲醚）（St—MAMPEG）．首先以N，N-二甲基甲酰胺（DMF）为溶剂，对甲基苯磺酸（PTSA）为催化剂，马来酸酐（MA）与聚乙二醇单甲醚（MPEG）酯化反应制备马来酸单聚乙二醇单甲醚酯大分子单体（MAMPEG）；采用正交试验方法考察了溶剂用星、催化剂用量和温度对酯化反应的影响.结果表明，最佳合成工艺为：m（DMF）：m（MA＋MPEG）=1：1,w（PTSA）=2％（对单体质量），反应温度120℃．然后利用MAMPEG大分子单体与苯乙烯（St）自由基共聚制备St—MAMPEG梳型表面活性剂．利用红外光谱（IR）和氢核磁共振（^1 HNMR）分析MAMPEG及St—MAMPEG的结构．测定了St—MAMPEG的水溶液表面张力、浊点和浓溶液流变行为l吉果表明：St—MAMPEG具有降低表面张力的能力，其临界聚集质量浓度（cac）为0．20g／L，表面张力（γcac）为43．57mN／m．当St—MAMPEG水溶液pH为3．4时，浊点为63．7℃；pH为7．0时，在100℃以下无混浊现象．

英文摘要：

Comb-shaped surfactant poly（styrene-co-maleic anhydride）-g-（poly（ethylene glycol） monomethyl ether） （St-MAMPEG） was prepared by macromonomer approach. First, the poly（ethylene glycol） mono- methyl ether maleate macromonomer （MAMPEG） was obtained by esterification of MPEG with MA using N, N-dimethylformamide （DMF） as solvent and p-toluene sulfonic acid （PTSA） as catalyst. The effects of solvent dosage, catalyst amount and temperature on the esterification were investigated through orthogonal experiments. The results showed the optimal synthesis technology： m（DMF）： m（MA＋MPEG）=1： 1, w（PTSA）=2% （on the mass of monomer）, reaction temperature was 120 ℃. Then, the comb-shaped surfactant St-MAMPEG was prepared by radical copotymerization of MAMPEG and styrene （St）. The structures of MAMPEG and St-MAMPEG were analyzed by infrared spectroscopy （IR） and ＇H nuclear magnetic resonance（^1H NMR）. The surface tension, cloud point and the rheological properties of the aqueous surfactant solutions were investigated. The results indicated that St-MAMPEG could decrease the surface tension, and its critical aggregation concentration （cac） and surface tension at cac （yooo） were 0.20 g/L and 43.57 mN/m, respectively. The cloud point of the aqueous solution in pH of 3.4 was 63.7 %. There was no appearance of cloud point below 100 % when the pH of solution was 7.0.