Plant oil-derived copolymers with remarkable post-polymerization induced mechanical enhancement for high performance coating applications
Plant oil-derived copolymers with remarkable post-polymerization induced mechanical enhancement for high performance coating applications
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DOI：
10.1016/j.polymer.2019.04.072
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发表时间：
2019-06
期刊：
影响因子：
4.6
通讯作者：
M. Lamm;Ping Li;S. Hankinson;Tianyu Zhu;Chuanbing Tang
中科院分区：
文献类型：
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作者：
M. Lamm;Ping Li;S. Hankinson;Tianyu Zhu;Chuanbing Tang
聚合物涂层在许多工业和民用应用中得到了广泛的应用，其中需要一种具有增强性能的热固性保护材料，如耐化学和物理性能、热稳定性和可调整的机械性能。植物油是一类很有希望成为可持续聚合物的生物质，但由于要获得理想的热机械性能，需要进行具有挑战性的官能化和广泛的交联过程，因此尚未完全用于可定制的热固性涂料。在这项工作中，我们证明了以高油大豆油(HOSO)为原料的大豆甲基丙烯酸酯(SBMA)可以通过工业上可行的半间歇乳液聚合工艺与各种常用的共聚单体(如甲基丙烯酸甲酯、苯乙烯和丙烯酸丁酯)合成生物基丙烯酸热固性共聚物。加入丁苯二甲酸丁二醇酯的单体加料比从0到50 wt%范围很大，只需极少的修改即可实现，从而使所制备的胶乳具有良好的热性能和机械性能。更重要的是，乳胶膜简单而有效的自动氧化交联提供了极大的机械增强，使这些热固性树脂成为超强、超韧和高玻璃化温度涂料应用的理想候选者。
Polymer coatings have been heavily utilized in many industrial and civil applications where a protective thermoset material with enhanced properties such as chemical and physical resistance, thermal stability, and tailorable mechanical properties is desired. Plant oils are a class of promising biomass toward sustainable polymers, but have yet to be fully harnessed in tailorable thermoset coatings due to the challenging functionalization and extensive crosslinking processes required to achieve desirable thermomechanical properties. In this work, we demonstrated that soybean methacrylate (SBMA) from high oleic soybean oil (HOSO) can be utilized to produce bio-based acrylic thermoset copolymers through an industrially viable semi-batch emulsion polymerization process with various commonly used co-monomers such as methyl methacrylate, styrene, and butyl acrylate. A wide range of monomer feed ratios with SBMA from 0 to 50 wt% was easily achieved with minimal modifications allowing for good tunability of thermal and mechanical properties in the prepared latexes. More importantly, a simple and effective auto-oxidative crosslinking of the latex films provided extreme mechanical enhancements making these thermosets good candidates in ultra-strong, ultra-tough, and highTgcoating applications.