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通过XAD-4树脂和氯代乙酰氯的Friedel-Crafts反应合成了氯乙酰化XAD-4树脂,再将氯乙酰化XAD-4树脂分别与二乙烯三胺、三乙烯四胺和四乙烯五胺反应制备了三种氨基螯合树脂,用电导率法研究了它们对Cu2+的吸附动力学。红外光谱和碱基全交换容量测定结果表明氯乙酰基被成功地引入到XAD-4树脂上以及二乙烯三胺、三乙烯四胺和四乙烯五胺被键合到氯乙酰化XAD-4树脂上。吸附动力学测试表明,螯合树脂对金属铜离子的吸附速率和吸附量与氨基含量密切相关,二级速率方程可用来描述螯合树脂对金属铜离子的吸附动力学。 相似文献
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P(VA-co-DBM)/PVA乳胶IPN阻尼材料的合成及动态力学性能 总被引:3,自引:0,他引:3
用种子乳液聚合法合成了聚(醋酸乙烯酯-co-马来酸二丁酯)/聚醋酸乙烯酯乳胶互穿聚合物网络阻尼材料,动态力学谱结果表明,该阻尼材料在较宽的温域具有很高的阻尼因子。 相似文献
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The dynamics of a series of poly(n-alkyl methacrylates) is investigated by means of ~(13)C spin-lattice relaxation experiments. The results show that the dynamics has the polymer property dependence. 相似文献
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AN INTERMOLECULAR ~(13)C{~1H} NUCLEAR OVERHAUSER EFFECT FOR THE CARBON OF CCl_4 IN POLYMER SOLUTIONS
An intermolecular ~(13)C{~1H} NOE of CCl_4 in the solutions of polystyrene and polybutadiene and their copolymers was observed. The results show that the defined polymer-CCl_4 interaction variable has a linear relation with the polymer composition and the difference of solubility parameters and exponentially depends on the reciprocal of temperature. 相似文献
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The compatibility and dynamics of latex bidirectional/nterpenetrating polymer networks (LBIPNs) and latex IPN(LIPN) of poly(vinyl acetate)(PVAc) and poly (butyl acrylate )(PBA) are investigated by means of dynamic mechanical spectroscopy (DMS) and nuclear magnetic resonance (NMR) techniques. The results of DMS show that the compatibility of the LBIPNs is much better than that of the corresponding LIPN and depends to, a large extent on the distribution of PVAc both in the core and in the shell. The results of NMR measurements indicate that the rotational correlation times of the side- groups of PBA in the LBIPN are longer than those in the LIPN. The relation between the ~(13)C linewidths of PBA and temperature is also discussed. 相似文献
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