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Effect on adhesion of new polymerization initiator systems comprising 5‐monosubstituted barbituric acids, aromatic sulfinate amides, and tert ‐butyl peroxymaleic acid in dental adhesive resin
Author(s) -
Ikemura Kunio,
Endo Takeshi
Publication year - 1999
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19990624)72:13<1655::aid-app2>3.0.co;2-0
Subject(s) - adhesive , curing (chemistry) , benzoyl peroxide , polymer chemistry , chemistry , ultimate tensile strength , polymerization , bond strength , materials science , organic chemistry , polymer , composite material , layer (electronics)
To develop a multipurpose dental adhesive resin, the effects of polymerization initiator systems comprising 5‐monosubstituted barbituric acid (5‐MSBA), aromatic sulfinate amide (ASA), and tert ‐butyl peroxymaleic acid ( t ‐BPMA) with 4‐acryloxyethyltrimellitic acid (4‐AET) or its anhydride (4‐AETA) on adhesion and curing time were investigated. Tensile bond strength values of a NiCr alloy are affected by the inclusion of t ‐BPMA, and the optimum concentration of t ‐BPMA in a 5‐MSBA–ASA– t ‐BPMA‐type initiator system was found to be 0.5–2.0 wt %, and it was noteworthy that the correlation between the tensile bond strength and curing time on the t ‐BPMA‐concentration showed a highly negative correlation of a benzenesulfinate morphoride (BSMo) series adhesive: r = −0.957, and a p ‐toluenesulfinate morphoride ( p ‐TSMo) series adhesive: r = −0.949. The combination of 1‐cyclohexyl‐5‐ethylbarbiturioc acid (CEBA) with ASA provides a high level of tensile bond strength to the NiCr alloy, and the optimum concentration of CEBA in a CEBA–ASA– t ‐BPMA‐type initiator and the bond strength values were found to be 0.75 wt % CEBA: 52.3 MPa (with BSMo), and 1.0 wt % CEBA: 50.9 MPa (with p ‐TSMo), respectively. It was suggested that 5‐MSBA, ASA, and t ‐BPMA and their combinations provided the environment where 4‐AETA exhibited good bonding performance with increasing wettability to metal without interference of a charge‐transfer complex derived from a polymerization initiator system such as benzoyl peroxide (BPO)–amine. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 72: 1655–1668, 1999