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The application research of benzyl methacrylate (BzMA) in acrylate latex pressure sensitive adhesives
International Journal of Adhesion and Adhesives ( IF 3.4 ) Pub Date : 2021-03-22 , DOI: 10.1016/j.ijadhadh.2021.102861
Cheng Fang , Fuxiang Zhou , Xiaolong Zhu

The cyclic methacrylate monomer benzyl methacrylate (BzMA) was evaluated as an alternative to traditional methyl methacrylate (MMA) as a hard monomer in the application of an acrylate latex pressure sensitive adhesive (PSA). The influences of BzMA on the resultant latex and PSA properties were comprehensively investigated. Both FTIR and 1H NMR analysis indicated that BzMA could be successfully introduced into the latex PSA copolymer through emulsion polymerization. TEM images illustrated that the synthesized latex particles are spherical and uniform. DSC and TGA results showed that the Tg of the copolymer was elevated, while thermal stability was first increased and then decreased with the introduction of BzMA. Besides, it was also found that the water resistance of the latex PSA was improved by the presence of BzMA, which was confirmed by water contact angle measurements. Furthermore, as the BzMA content increased, the gel content slightly decreased, while sol molecular weight (Mw, Mn) of the polymer increased. Finally, with respect to the adhesive properties of the PSA, it was observed that loop tack decreased, while shear strength increased with the incorporation of BzMA. 180° peel strength initially increased and then decreased with the addition of BzMA from 0 to 30 wt%, with a maximum value at 5 wt%.



中文翻译:

甲基丙烯酸苄酯(BzMA)在丙烯酸乳胶压敏胶中的应用研究

在丙烯酸​​酯胶乳压敏胶粘剂(PSA)的应用中,评估了环状甲基丙烯酸酯单体甲基丙烯酸苄酯(BzMA)作为传统的甲基丙烯酸甲酯(MMA)作为硬单体的替代方法。全面研究了BzMA对所得胶乳和PSA性能的影响。FTIR和1 H NMR分析均表明BzMA可以通过乳液聚合成功地引入到乳胶PSA共聚物中。TEM图像表明合成的胶乳颗粒是球形且均匀的。DSC和TGA结果表明,T g引入共聚物BzMA可以提高共聚物的热稳定性,而先增加热稳定性,然后降低热稳定性。此外,还发现通过存在BzMA可以改善乳胶PSA的耐水性,这通过水接触角测量得到证实。此外,随着BzMA含量的增加,凝胶含量稍微降低,而聚合物的溶胶分子量(M w,M n)增加。最后,关于PSA的粘合性能,观察到随着BzMA的加入,粘着力降低,而剪切强度提高。180°剥离强度最初会增加,然后随着BzMA的添加从0到30 wt%降低,最大值为5 wt%。

更新日期:2021-03-25
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