プライマー成分を利用した光刺激による易解体性接着技術

抄録

For efficient control of surface properties of materials, the immobilization of functional molecules on a substrate surface can provide one effective pathway. Furthermore, stimulus-responsive molecules enable the realization of switchable surface/interface properties. In the field of adhesion, the surface treatment of adherends plays a critical role in ensuring sufficient adhesion strength, which is known as a primer treatment. This article introduces a new concept of a novel dismantling system inspired by our recent study into a photo/thermocleavable molecular layer comprising anthracene molecules. Several types of a cleavable molecular layer were applied at the adhesion interface as same as a conventional primer to investigate the effect of the chemical bond changes at the adhesion interface on the adhesion strength. The photoirradiation or heating process for just 1 min reduced the peel strength when compared with the sample without external stimuli, and changed the failure mode from cohesive to interfacial failure. Especially, the dismantling through a photocleavage process is low-energy: the energy required for this process is less than 10 ％ of that for other photo-triggered dismantlable adhesives. This stimulus-responsive, cleavable primers are expected to provide a new design approach for the development of dismantling adhesive technology.