Sažetak sa skupa
Investigation of the Fracture Surface of E Glass Fiber Reinforced PMMA Denture Base Resins
LS. Ozyegin
G. Sinmazisik
Sažetak
The interface between fibers and the acrylic resin matrix is considered to be an important factor in the reinforcement, and the microscopic surface structure may play a key role in the effectiveness of this reinforcement. Adequate adhesion of the fibers to the polymer matrix is one of the most important factors for strength. The optic microscope, although of limited resolution, is still a popular choice. The scanning electron microscope (SEM) provides measurements in 2 dimensions. The aim of the study was to examine the interfacial region of PMMA reinforced with chopped glass fibers
coated with two different silans using the scanning electron microscope. E Glass fibers coupled with Silan 1 (silan + epoxy resin) and Silan 2 (silan + polyester resin) were used to reinforce denture base polymethyl metacrylate resin. Specimens were produced by two different methods in the first group, and the fibers were soaked with a mixture of polymer powder and monomer liquid. In the second group the fibers were soaked in the polymer liquid for 15 minutes and then blended with PMA polymers. All the samples were heat cured. Transverse strength of specimens was evaluated by a 3 point bending test. Fracture surfaces of the test specimens were examined with SEM to evaluate the degree of impregnation of fibers with the polymer matrix. SEM examination revealed well impregnated
glass fibers with the polymer matrix. No difference was found between the test groups.
Ključne riječi
Hrčak ID:
10068
URI
Datum izdavanja:
15.9.2002.
Posjeta: 1.433 *