环保可聚合型乳化剂在丙烯酸酯乳液中的应用及性能研究
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TQ436 .3

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江苏省高校优势学科建设工程资助项目


Performance Study of Environment-friendly Polymeric Emulsifiers in Acrylic Emulsion Pressure Sensitive Adhesives
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    摘要:

    配合使用环保可聚合阴/非离子型乳化剂LR-10和LG-20,通过种子预乳化半连续聚合工艺制备了丙烯酸酯乳液压敏胶。探讨了乳化剂的配比、用量及种类对丙烯酸酯乳液压敏胶性能的影响,并对其相关性能进行表征。实验结果表明,当m(LR-10):m(LG-20)=3:1时,所制备的丙烯酸酯乳液稳定性能最佳;GPC分析结果表明,随着复合乳化剂用量的增加,丙烯酸酯压敏胶溶胶部分的相对分子质量逐渐减少、相对分子质量分布越来越窄;当复合乳化剂的质量分数为3%时,乳胶膜的的粒径和PDI达到最小值,此时耐水性能和粘接性能最佳,压敏胶膜的水接触角为112?;FT-IR结果表明,所有的单体和可聚合乳化剂都完全参与了乳液聚合反应;与传统乳化剂体系相比,通过环保可聚合型乳化剂LR-10/LG-20所制备的乳胶膜的粘接性能最佳。

    Abstract:

    Acrylate latex pressure sensitive adhesive(PSA) was synthesized via pre-emulsified semicontinuous seeded emulsion polymerization, using Environment-friendly Polymeric Emulsifiers LR-10/LG-20 as hybrid emulsification systems.The effects of emulsifier proportion, content and kinds on performances of PSA were respectively investigated. The other relative performances were then characterized. The results showed that the stability of emulsion is best when the m(LR-10):m(LG-20)=3:1; The results of gel permeation chromatography(GPC) revealed that the molecular weight and molecular weight distribution (MWD) decreased as the increase of emulsifier content. The particle size of latex and PDI reach to the minimum when ω(emulsifier)=3%, at the same time the adhesive property and water resistance are optimal, which the contact angle of latex film was 112? The results of FTIR indicated that the whole monomers and emulsifiers participate in emulsion polymerization reaction; Compared with conventional emulsification systems, the adhesive property of Environment-friendly Polymeric Emulsifiers is better.

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宗雅君,房成,林中祥.环保可聚合型乳化剂在丙烯酸酯乳液中的应用及性能研究[J].精细化工,2016,33(11):

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  • 收稿日期:2016-05-16
  • 最后修改日期:2016-07-21
  • 录用日期:2016-07-27
  • 在线发布日期: 2016-10-10
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