Dismantlable Adhesives Based on Photoreaction

Abstract

Adhesives are used in all aspects of life and have contributed to industrial development in terms of processing and operating costs, such as labor saving and weight reduction. In recent years, it has become desirable to have applications that can promote the reuse and recycling of the adhered by easily releasing the adhesion, thus contributing to resource saving. Such adhesives which can be easily separated are called“dismantlable adhesives” and are the subject of intensive research. Among them, dismantling adhesives that use light as a trigger means have been studied intensively. Because they can be irradiated without contact and with high spatial and temporal resolution, and be easily homogenized, enlarged, and curved. Dismantling adhesives based on photochemical reactions use irreversible photoreactions and photochromism. In this review, we describe several recent examples of photodisassembly adhesives and also photoinduced exfoliation of liquid crystalline polymeric composites.