Silane treatment effects on glass/resin interfacial shear strengths
Silane treatment effects on glass/resin interfacial shear strengths
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DOI：
10.1016/s0109-5641(02)00089-1
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发表时间：
2003-07-01
期刊：
影响因子：
5
通讯作者：
Baran, GR
中科院分区：
文献类型：
--
作者：
Debnath, S;Wunder, SL;Baran, GR
目标。甲基丙烯酸树脂基牙科复合材料通常使用带有中间碳连接段的双功能硅烷偶联剂来提供界面相，将有机聚合物基质与增强的无机相结合在一起。在本研究中，纤维拔出试验被用来测量纤维-基质界面处的界面结合强度。用不同浓度(1、5和10%)的3-甲基丙烯氧基丙基三甲氧基硅烷(MPS)或环氧丙基丙基三甲氧基硅烷(GPS)在丙酮(99.8%)中对玻璃纤维(直径约30微米、长8×10(-2)米)进行硅烷化处理。橡胶(聚丁二烯/丙烯腈，端胺，M-w5500)分子也通过GPS分子附着在纤维表面。该树脂由双酚-A双(2-羟丙基)甲基丙烯酸酯(BISGMA)和三乙二醇二甲基丙烯酸酯(TEGDMA)按60/40的比例混合而成。将嵌入长度约为2-4×10(-3)m的树脂珠放置在处理后的纤维上并进行光固化。将纤维从树脂中拔出所需的载荷转化为剪切粘结强度。硅烷化样品的界面剪切强度高于未硅烷化样品，MPS样品的界面剪切强度高于GPS样品。同一组样品在50：50(v/v)的乙醇和蒸馏水的混合物中浸泡1个月后，其性能下降。填料表面硅烷含量与浸渍后的性能损失呈正相关。橡胶处理提高了界面强度。5%MPS浸渍试件和未浸渍试件的强度均最高。(C)2003年牙科材料学会。爱思唯尔科学有限公司出版。版权所有。
Objectives. Methacrylic resin-based dental composites normally use a bifunctional silane coupling agent with an intermediary carbon connecting segment to provide the interfacial phase that holds together the organic polymer matrix with the reinforcing inorganic phase. In this study, fiber pull-out tests were used to measure the interfacial bond strength at the fiber-matrix interface.Methods. Glass fibers (approximately 30 mum diameter, 8 X 10(-2) m length, MoSci) were silanated using various concentrations (1, 5 and 10%) of either 3-methacryloxypropyl-trimethoxysilane (MPS) or glycidoxypropyltrimethoxy-silane (GPS) in acetone (99.8%). Rubber (poly(butadiene/acrylonitrile), amine terminated, M-w 5500) molecules were also attached to the fiber surface via GPS molecules. The resin was comprised of a 60/40 mixture of Bis-phenol-A bis-(2-hydroxypropyl)-methacrylate (BisGMA) and tri (ethylene glycol) dimetbacrylate (TEGDMA). A bead of resin approximately 2-4 X 10(-3) m in embedded length was placed on the treated fibers and light cured. The load required to pull the fiber out of the resin was converted to shear bond strength.Results. Interfacial shear strengths were greater for silanated specimens compared with unsilanated, and for MPS compared with GPS. The same set of samples soaked in 50:50 (v/v) mixtures of ethanol and distilled water for a period of 1 month showed a decrease in properties.Significance. A positive correlation was found between the amount of silane on the filler surface and the property loss after soaking. Rubber treatment provided improvement in interfacial strength. 5% MPS samples had the highest strength both in soaked as well as unsoaked samples. (C) 2003 Academy of Dental Materials. Published by Elsevier Science Ltd. All rights reserved.