Development of the normative support for the production of hybrid silica fillers dental composite materials
DOI:
https://doi.org/10.15587/1729-4061.2014.20336Keywords:
silica filler, dental composite materials, hybrid gels, aggregation, hydrophobicityAbstract
The research on the problems of normative support for quality control of silica filler with a reduced tendency to aggregation, obtained from hybrid gels of the system MTEOS–TEOS–water–alcohol under conditions of variable pH was given. As a result of the conducted studies, the technology for hybrid filler with a homogeneous structure and uniform particles surface hydrophobization was developed. It was established that the inincrease in the ratio MTEOS/TEOS in the gel increases the particles adsorption activity of the silica powder and its hydrophobicity degree due to the methyl groups presence on the particles surface. It was found that the alkali concentration at TEOS and MTEOS hydrolysis products joint coagulation has a decisive influence on the homogeneity degree of powder and its physicochemical characteristics. The method of quality control of the hybrid silica filler of dental composite materials was developed.
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Copyright (c) 2014 Антон Юрьевич Лозовской, Дарья Юрьевна Олейник, Ольга Борисовна Скородумова, Татьяна Борисова Гонтар, Яна Николаевна Гончаренко
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