Fabrication and evaluation of one-component core/shell structured latex adhesives containing poly(styrene) cores and poly(acrylate) shells
Fabrication and evaluation of one-component core/shell structured latex adhesives containing poly(styrene) cores and poly(acrylate) shells
复制标题
含有聚苯乙烯核和聚丙烯酸酯壳的单组分核/壳结构乳胶粘合剂的制备和评价
DOI：
10.1016/j.ijadhadh.2016.06.008
复制
发表时间：
2016-10-01
影响因子：
3.4
通讯作者：
Li, Zhiguo
中科院分区：
文献类型：
--
作者：
Bai, Long;Huan, Siqi;Li, Zhiguo
采用两段种子乳液聚合法制备了一种室温固化的单组分非交联核/壳结构水性苯丙乳液胶粘剂。第一阶段聚合物是T（g）为86 ℃至41 ℃的非极性苯乙烯基共聚物，第二阶段聚合物是T-g为8 ℃的极性丙烯酸酯基共聚物。通过评价胶膜的热性能和力学性能，考察了乳胶粒子形态和胶膜微观结构对CS结构PStA乳胶胶粘剂的影响。结果表明，将软壳聚合物掺入到硬核聚合物中可以改善粘合性能而不损害成膜能力。采用剪切强度和耐沸水性测定了胶乳胶粘剂的木材胶粘性能。单组分CS结构的PStA乳液胶粘剂的使用性能在很大程度上取决于CS的形态特征和各种聚合物组分之间的界面相容性，表明CS乳胶粒子的制备为实现高性能乳液胶粘剂提供了一种有前途的方法。(C)2016爱思唯尔有限公司版权所有
A one-component, non-crosslinked, and ambient temperature-cured core/shell (CS) structured water-borne poly(styrene-acrylate) (PStA) latex adhesive was prepared by two-stage seeded emulsion polymerization. The first-stage polymers were non-polar styrene-based copolymers with T(g)s ranging from 86 degrees C to 41 degrees C and the second-stage polymer was polar acrylate-based copolymer having a T-g of 8 degrees C. The effect of latex particle morphology and film microstructure on the CS structured PStA latex adhesive was examined by evaluating film thermal properties and mechanical performance. The results have shown that incorporation of soft shell polymers into hard core polymers can improve adhesive properties without compromising film-forming ability. Wood adhesive performances of latex adhesive were measured by shear strength and boiling water resistance of glued wood blocks. The utilization performances of the one-component CS structured PStA latex adhesive were found to largely depend on CS morphological character and the interfacial compatibility between various polymeric constituents, demonstrating that fabrication of CS latex particles provides a promising approach to realize high-performance latex adhesives. (C) 2016 Elsevier Ltd. All rights reserved.