Wang Ye, Hansen Christopher J, Wu Chi-Chin, Robinette E Jason, Peterson Amy M
Department of Plastics Engineering, University of Massachusetts Lowell Lowell MA 01854 USA
Department of Mechanical Engineering, University of Massachusetts Lowell Lowell MA 01854 USA.
RSC Adv. 2021 Sep 21;11(49):31142-31151. doi: 10.1039/d1ra05916e. eCollection 2021 Sep 14.
Interfacial adhesion dictates properties and performance of both composites and adhesively bonded structures. Weak adhesion at the interfaces of polymer composites leads to void formation and debonding, which adversely affect composite structural integrity and mechanical performance. This work investigated the relationship between surface wettability and interfacial fracture energy with the goal of tailoring interfacial adhesion within polymer composites. A series of model functionalized surfaces was created using silane coupling agents with different organo-functionalities to alter surface wettability. Based on the analysis of interfacial fracture energy between a thermosetting elastomeric polymer network and model surfaces, interfacial adhesion was found to be positively correlated to resin wettability. The results provide a fast and simple approach to screen different material combinations for the development of novel polymeric composites and adhesively bonded structures with tailorable adhesion.
界面粘结决定了复合材料和粘结结构的性能与表现。聚合物复合材料界面处的弱粘结会导致空隙形成和脱粘，这对复合材料的结构完整性和力学性能产生不利影响。这项工作研究了表面润湿性与界面断裂能之间的关系，目的是调整聚合物复合材料内部的界面粘结。使用具有不同有机官能团的硅烷偶联剂创建了一系列模型功能化表面，以改变表面润湿性。基于对热固性弹性体聚合物网络与模型表面之间界面断裂能的分析，发现界面粘结与树脂润湿性呈正相关。这些结果提供了一种快速简便的方法，用于筛选不同的材料组合，以开发具有可定制粘结性的新型聚合物复合材料和粘结结构。
