FTIR Spectroscopic Studies of Facial Prosthetic Adhesives
KANG Biao1,YANG Qing-fang2,LIANG Jian-feng2,ZHAO Yi-min1*
1. Department of Prosthodontics, School of Stomatology, the Fourth Military Medical University, Xi’an 710032, China 2. Department of Applied Chemistry, School of Science, Northwestern Poly-Technical University, Xi’an 710072, China
Abstract：According to the composition of the traditional facial prosthetic adhesives, most of adhesives can be classified into two categories: acrylic polymer-based adhesive and silicone-based adhesive. In previous studies, measurements of various mechanical bond strengths were carried out, whereas the functional groups of the adhesives were evaluated seldom during the adhesion. In the present study the analysis of two facial prosthetic adhesives (Epithane3 and Secure2 Adhesive) was carried out by using infrared spectroscopy. Two adhesives in the form of fluid or semisolid were submitted to FTIR spectroscopy, respectively. The results showed that water and ammonia residue volatilized during the solidification of Epithane3,and absorption peak reduction of carbonyl was due to the volatilization of acetate vinyl from Secure2 Adhesive. Similar silicone functional groups both in the silicone-based adhesive and in silicone elastomer could be the key to higher bond strength between silicone elastomer and skin with silicone-based adhesive. The position, shape of main absorption peaks of three adhesives didn’t change, which showing that their main chemicals and basic structures didn’t change during solidification.
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