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以丙烯酰氯、2-吡啶甲醇和碘甲烷为原料,合成了不同分子量、不同阳离子化度的聚2-丙烯酸甲酯-1-甲基吡啶盐(PMAMPI).采用核磁共振(1H-NMR)对单体结构进行了表征,用红外光谱(FTIR)、凝胶渗透色谱(GPC)、电导率、热重分析(TG)分别对聚合物的结构、分子量及分布、阳离子化度和耐热性进行了表征;并用沉淀实验和质谱(ESI-MS)证明了PMAMPI在碱性条件下的水解反应.将PMAMPI应用于棉织物活性染料无盐冷轧堆染色,结果发现在实验范围内,因聚合物分子量分布宽,使分子量对染色织物的得色深度影响小;聚合物的阳离子化度在35%左右时,染色织物得色深度最深.同常规有盐染色对比表明:经PMAMPI预处理的棉织物,染色后织物得色深度、各项染色牢度值均达到或略超过有盐染色的水平,染色后织物的强度、透湿、透气性能没有受到影响.
Methyl 2-propenylmethacrylate (PMAMPI) with different molecular weights and different degrees of cationization was synthesized by using acryloyl chloride, 2-pyridinemethanol and methyl iodide as raw materials.The structure of PMAMPI was characterized by 1H-NMR The structure, molecular weight and distribution, cationization degree and heat resistance of the polymer were characterized by FTIR, GPC, conductivity and TG respectively The results of precipitation and mass spectrometry (ESI-MS) showed that PMAMPI was hydrolyzed under alkaline conditions.It was found that PMAMPI was applied to non-salt cold pad-batch dyeing of reactive dyes in cotton fabric and found that in the experimental range, The distribution of molecular weight is wide, so that the molecular weight has little effect on the color depth of the dyed fabric. When the degree of cationicization of the polymer is about 35%, the dyed fabric has the deepest color depth. Compared with the routine salt dying, it shows that the PMAMPI pretreated cotton fabric , The color depth of fabric after dyeing, the various color fastness values reached or slightly exceeded the level of salt dyeing, fabric strength after dyeing, moisture permeability, breathability was not affected.