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首页> 外文期刊>Journal of Applied Polymer Science >GRAFT COPOLYMERIZATION OF METHYL METHACRYLATE AND OTHER VINYL MONOMERS ONTO COTTON FABRIC USING FERROUS CELLULOSE THIOCARBONATE-N-BROMOSUCCINIMIDE REDOX INITIATION SYSTEM
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GRAFT COPOLYMERIZATION OF METHYL METHACRYLATE AND OTHER VINYL MONOMERS ONTO COTTON FABRIC USING FERROUS CELLULOSE THIOCARBONATE-N-BROMOSUCCINIMIDE REDOX INITIATION SYSTEM

机译：甲基纤维素硫代碳酸盐-N-溴代琥珀酰亚胺氧化还原引发体系将甲基丙烯酸甲酯和其他乙烯基单体接枝共聚合到棉织物上

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The cellulose thiocarbonate, in the fabric form, was treated first with a freshly prepared ferrous ammonium sulphate (FAS) solution. The so-treated fabric formed, with N-bromosuccinimide (NBS), an effective redox system capable of initiating grafting of methyl methacrylate (MMA) and other vinyl monomers onto the cotton fabric. The effect of the polymerization conditions on the polymer criteria, namely, graft yield, homopolymer, total conversion, and grafting efficiency, was studied. These polymer criteria were found to depend extensively upon concentrations of the Fe2+ ion (activator), NBS (initiator), and MMA; pH of the polymerization medium, and duration and temperature of polymerization. Based on detailed investigation of these factors, the optimal conditions for grafting were as follows: Fe2+, 1 x 10(-3) mol/L; NBS, 1 x 10(-2) mol/L; MMA, 4%; pH, 2; polymerization time, 150 min; polymerization temperature, 60 degrees C; material/liquor ratio, 1:100. Under these optimal conditions, the rates of grafting of different vinyl monomers were in the following sequence: methyl methacrylate much greater than methyl acrylate > acrylonitrile. Other vinyl monomers, namely, acrylic acid, and methacrylic acid have no ability to be grafted to the cellulosic fabric using the said redox system. A tentative mechanism for the polymerization reaction is suggested. (C) 1996 John Wiley & Sons, Inc. [References: 28]
机译：首先用新鲜制备的硫酸亚铁铵溶液处理织物形式的硫代纤维素纤维素。如此处理的织物与N-溴琥珀酰亚胺（NBS）形成了一种有效的氧化还原体系，该体系能够引发甲基丙烯酸甲酯（MMA）和其他乙烯基单体的接枝到棉织物上。研究了聚合条件对聚合物标准的影响，即接枝率，均聚物，总转化率和接枝效率。发现这些聚合物标准在很大程度上取决于Fe2 +离子（活化剂），NBS（引发剂）和MMA的浓度。聚合介质的pH值以及聚合的持续时间和温度。在对这些因素进行详细研究的基础上，最佳的接枝条件如下：Fe2 +，1 x 10（-3）mol / L; NBS 1 x 10（-2）mol / L; MMA，4％; pH值为2;聚合时间150分钟;聚合温度60℃;材料/液体比为1：100。在这些最佳条件下，不同乙烯基单体的接枝速率按以下顺序进行：甲基丙烯酸甲酯比丙烯酸甲酯>丙烯腈大得多。使用所述氧化还原体系，其他乙烯基单体，即丙烯酸和甲基丙烯酸不具有接枝到纤维素织物上的能力。提出了聚合反应的初步机理。 （C）1996 John Wiley＆Sons，Inc. [参考：28]

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