Advanced interfacial properties of glass fiber/dopamine-epoxy composites using a microdroplet pull-out test and acoustic emission

The evaluation of interfacial properties between fiber and epoxy resin is very important. An advanced microdroplet pull-out test was introduced to quantitatively evaluate the interfacial adhesion. To improve the interfacial property, dopamine was added in the epoxy resin whereas grease treatment was applied to the glass fiber to reduce the interfacial property. The pull-out forces of microdroplets as well as acoustic emission energy were...