葡萄糖基可聚合乳化剂的合成及其在乳液压敏胶中的应用

Synthesis of Glucos-based Polymerizable Emulsifier and Its Application in Emulsion Pressure Sensitive Adhesive

摘要:

丙烯酸酯乳液压敏胶是一类应用广泛的低VOC含量环保胶黏剂。本文合成了一种葡萄糖基可聚合乳化剂-丁基葡萄糖苷马来酸酯（BGMAH），并采用半连续种子乳液聚合工艺制备了BGMAH改性的丙烯酸酯乳液压敏胶。通过系统考察BGMAH的结构及用量等因素对乳液粒径、乳胶膜耐水性和粘接性能的影响发现，当复合乳化剂质量分数保持3%不变，m(BGMAH):m(OP-10):m(SDS)=2:1.5:0.5时，乳胶膜的粘接性能和耐水性能最佳。红外、热稳定性等分析表明丙烯酸酯乳液在改性过程当中发生了共聚交联反应，且改性后聚合物体系相容性良好，乳胶膜的玻璃化转变温度和热稳定性均提高，同时对聚合体系的反应机理也进行了研究。

Abstract:

Acrylate emulsion pressure-sensitive adhesive (PSA) is a kind of environmentally friendly adhesive with low content of VOC application.In this study, A glucose based emulsifier - butyl glucoside maleate (BGMAH) were synthesized . and its promotion effect in the emulsion polymerization of acrylic emulsion PSA was investigated. The PSA modified by BGMAH was prepared by semi - continuous seed emulsion polymerization. The effect of structure and amount of BGMAH on the water resistance and adhesion of the latex film were studied.The results showed that when the mass fraction of the composite emulsifier was kept at 3%, m (BGMAH): m (OP-10): m (SDS) = 2: 1.5: 0.5, the adhesive property and water resistance of the latex film were the highest. The results of Fourier transform infrared spectroscopy (FTIR) shows that cross-linking reaction was happened in the modification of acrylic emulsion PSA. The results of differential scanning calorimetry (DSC) shows that the modified polymer system has good compatibility and the glass transition of latex film was greatly reduced. And the thermal stability of the latex films was improved by thermogravimetric analysis. The reaction mechanism of polymerization was also investigated.