The kinetics of emulsion polymerization of monomers methyl methacrylate (MMA)/n-butyl methacrylate (BMA) was studied to investigate the effect of cross-linkable monomer poly(propylene glycol diacrylate) (PPGDA). The results showed that by the incorporation of PPGDA rate constant of reaction decreased. Fourier transform infrared spectroscopy and scanning electron microscope were used to characterize the synthesized polymers. The thermal analysis of samples was done by differential scanning calorimetry, and the results were compared by the previous studies with MMA/n-butyl acrylate (BA) and MMA/2-ethylhexyl acrylate (EHA). The glass transition temperature (T g) values show that the latexes prepared using BA and EHA as comonomer was suitable for binder purpose, but in the present study the T g is not suitable in case of BMA as higher acrylate comonomer. That may be due to more cross-linking in MMA-BMA-PPGDA. The results conclude that the BA and EHA can be used as the binder, but the use of BMA is limited for the binder in coating applications.

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高级丙烯酸酯对用作环保乳胶的可交联PMMA影响的比较研究

研究了单体甲基丙烯酸甲酯 (MMA)/甲基丙烯酸正丁酯 (BMA) 的乳液聚合动力学，以研究可交联单体聚丙二醇二丙烯酸酯 (PPGDA) 的影响。结果表明，通过掺入PPGDA，反应速率常数降低。傅里叶变换红外光谱和扫描电子显微镜被用来表征合成的聚合物。样品的热分析是通过差示扫描量热法进行的，结果与之前的研究与 MMA/丙烯酸正丁酯 (BA) 和 MMA/丙烯酸 2-乙基己酯 (EHA) 进行了比较。玻璃化转变温度 (T g) 值表明使用 BA 和 EHA 作为共聚单体制备的胶乳适用于粘合剂目的，但在本研究中，T g 不适用于 BMA 作为高级丙烯酸酯共聚单体的情况。这可能是由于 MMA-BMA-PPGDA 中有更多的交联。结果得出结论，BA 和 EHA 可用作粘合剂，但 BMA 的使用受限于涂料应用中的粘合剂。