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- Title
EFECTUL SILANIZĂRII ASUPRA COMPOZITELOR PE BAZĂ DE ALUMINĂ ŞI ACID POLIMETACRILIC CU APLICAŢII CA MATERIALE PENTRU PROTEZE DENTARE.
- Authors
CUCURUZ, ANDREI TIBERIU; ANDRONESCU, ECATERINA; CUCURUZ, ANDREIA; PELIN, GEORGE
- Abstract
The aim of this work was to prepare via in situ radical polymerization polymethacrylic acid/Al2O3 composite materials and to modify the structure of alumina with two silane coupling agents, 3-aminopropyl-trimethoxysilane (APTMS) and dichlorodimethylsilane (DMDCS). Also, the influence of silanization on the physico-mechanical properties of the resulting composite materials was studied. The surface modification of inorganic particles appears as an efficient technique to improve interactions between polymer matrix and nanoparticles. The modification of alumina was investigated using transmission Fourier transform infrared spectroscopy that confirmed the success of the silanization procedure. The crystalline phase was identified using XRD analysis and the presence of alumina in the composite materials is demonstrated according to ASTM. Scanning electron microscopy revealed in all the analyzed samples alumina particles with spherical morphology that are embedded homogeneously in the organic polymer matrix. Also, the mechanical properties of composites were investigated based on xylene porosimetry and compression testing. The composite materials synthesized in this study demonstrated a good potential for application in dentistry as dental resins or denture base materials.
- Subjects
SILANIZATION; METHACRYLIC acid; ASTERACEAE; POLYMETHACRYLIC acids; COMPOSITE materials; XYLENE
- Publication
Romanian Journal of Materials / Revista Romana de Materiale, 2019, Vol 49, Issue 1, p3
- ISSN
1583-3186
- Publication type
Article