Effects of coupling agents and storage times on transverse strength of acrylic resin with glass fiber reinforcement

Authors

Prapaporn Homjunjeerung
Issarawan Boonsiri

Publication Date

2008-09-01

Abstract

Objective To determine the effects of two different coupling agents and storage times on transverse strength of acrylic resin with glass fiber reinforcement. Materials and methods Eighty test specimens (2x2x25 mm) made of chemically activated acrylic resin were divided into four groups: (A) no fibers; (B) non-impregnated glass fibers; (C) silane impregnated glass fibers and (D) titanate impregnated glass fibers. The specimens in group B-D were reinforced with 10% volume of glass fibers which were oriented parallel to the long axis and positioned in the center of the specimen. Each group was subdivided to store in distilled water for 7 and 30 days at 37 °C before testing. They were subjected to a three-point loading test set up at a crosshead speed of 1 mm/min. Scanning electron microscopy was used to examine the microstructure of the cracked surface. Transverse strengths were analyzed by means of Two-way ANOVA. Results There were statistically significant differences among the groups (p < 0.05). Transverse strength of silane impregnated glass fiber group was higher than those of titanate impregnated glass fiber group, non-impregnated glass fiber and no fiber group, respectively. The transverse strengths of each group were decreased significantly from 7 days to 30 days of water storage (p < 0.05). Conclusion Treating the surface of glass fibers with coupling agents produced significant improvement in the transverse strength. The storage times had a significant effect on the transverse strength of acrylic resin with glass fiber reinforcement.

DOI

10.58837/CHULA.CUDJ.31.3.8

First Page

349

Last Page

358

Recommended Citation

Homjunjeerung, Prapaporn and Boonsiri, Issarawan (2008) "Effects of coupling agents and storage times on transverse strength of acrylic resin with glass fiber reinforcement," Chulalongkorn University Dental Journal: Vol. 31: Iss. 3, Article 8.
DOI: 10.58837/CHULA.CUDJ.31.3.8
Available at: https://digital.car.chula.ac.th/cudj/vol31/iss3/8