For a poly(ethylene terephthalate) (PET)/cotton blended fabric, a reactive-type flame retardant 2, 3-dibromo-succinic anhydride (DBSA) was used to endow durable flame retardancy via the pad-dry-cure method. DBSA was synthesized via the addition reaction of maleic anhydride and bromine in ethyl acetate solution and extracted by solventing-out crystallization. DBSA was used to finish a cotton fabric firstly with sodium hypophosphite as the catalyst. Thermal behaviors and amount of DBSA that esterified with the cotton was determined. Pyrovatex CP new was applied as a comparison. It was speculated from the thermogravimetric analysis result that esterification of cellulose with DBSA worked similar to phosphate-ester at the initial stage of thermal decomposition. DBSA was also applied to PET and PET/cotton blended fabrics. Flame retardancy, thermal behaviors and durability of the finished fabrics were investigated. Evidence of the condensed phase effect of DBSA was also observed on PET and PET/cotton.

中文翻译：

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2, 3-二溴丁二酸酐的合成及在棉、涤纶及涤棉混纺织物中的应用

对于聚对苯二甲酸乙二醇酯 (PET)/棉混纺织物，使用反应型阻燃剂 2, 3-二溴琥珀酸酐 (DBSA) 通过轧干固化方法赋予持久的阻燃性。DBSA由马来酸酐和溴在乙酸乙酯溶液中加成反应合成，溶剂析出结晶萃取。DBSA首先以次磷酸钠为催化剂对棉织物进行整理。测定了与棉花酯化的 DBSA 的热行为和量。Pyrovatex CP new 被用作对比。从热重分析结果推测，纤维素与 DBSA 的酯化在热分解的初始阶段类似于磷酸酯。DBSA 还应用于 PET 和 PET/棉混纺织物。阻燃性，对成品织物的热行为和耐久性进行了研究。在 PET 和 PET/棉花上也观察到 DBSA 的凝聚相效应的证据。