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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and Characterization of the Latexes with Different Particle Sizes by Semibatch Emulsion Polymerization and the Influence on Properties of Waterborne Pressure-Sensitive Adhesives
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Preparation and Characterization of the Latexes with Different Particle Sizes by Semibatch Emulsion Polymerization and the Influence on Properties of Waterborne Pressure-Sensitive Adhesives

机译：半间歇乳液聚合法制备不同粒径乳胶及其特性及其对水性压敏胶性能的影响

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摘要

Increasing environmental concerns and regulations are the major driving forces for the development of waterborne pressure-sensitive adhesives. This article reported the synthesis of a series of poly[(n-butyl acrylate)- co-(acrylic acid)] latexes with different particle sizes using a semibatch emulsion polymerization process. By changing the levels of surfactant (Aerosol Series) at the seed stage, the z-average particle diameters (dzs) measured with dynamic light scattering varied from 124 to 366 nm. The polymerizations proceeded under monomer-starved conditions, and the values of d_Z measured for samples removed during the polymerizations were consistent with theoretical prediction for particle growth spherically without the secondary nucleation. The gel contents of the polymers were determined by Soxhlet extraction, and the molecular parameters were characterized by gel permeation chromatography and dynamic mechanical thermal analysis. The adhesive properties, loop tack, peel force, and shear resistance were measured according to the Fe′de′ration Internationale des Fabricants et Transformateurs d0Adhe′sifs et Thermocollants sur Papiers et Autres Supports (FINAT) test methods. The results were reported and correlated with the latex particle size and molecular parameters. The spatial architecture of gel domains in the dry film and the molecular connectivity between those gel domains play an important role in controlling its adhesive properties.
机译：日益增长的环境关注和法规是水性压敏胶开发的主要动力。本文报道了使用半间歇乳液聚合法合成具有不同粒径的一系列聚[（丙烯酸正丁酯）-共-（丙烯酸）]胶乳。通过改变种子阶段表面活性剂（Aerosol系列）的含量，动态光散射测得的z平均粒径（dzs）在124至366 nm之间变化。聚合反应在单体缺乏的条件下进行，对于在聚合反应中取出的样品测得的d_Z值与理论上对球形颗粒生长而没有二次成核的理论预测是一致的。通过索氏提取法确定聚合物的凝胶含量，并通过凝胶渗透色谱和动态机械热分析表征分子参数。粘合性能，回粘力，剥离力和抗剪切性根据国际化纤制造商（Fe'de'ration Internationale des Fabricants）等人（Transformateurs d0Adhe'sifs）和Thermocollants sur Papiers et Autres Supports（FINAT）测试方法进行测量。报告结果并与胶乳粒径和分子参数相关。干膜中凝胶域的空间结构以及这些凝胶域之间的分子连接性在控制其粘合性能方面起着重要作用。

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