Performance enhancement of dental composites using electrospun nanofibers
Performance enhancement of dental composites using electrospun nanofibers
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DOI：
10.1155/2008/840254
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发表时间：
2008-01-01
影响因子：
--
通讯作者：
Griswold, K.
中科院分区：
文献类型：
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作者：
Dodiuk-Kenig, H.;Lizenboim, K.;Griswold, K.
本研究的目的是研究静电纺丝增强对市售超支化聚合物改性（Hybrane，0.3wt.%）的性能的影响。DSM）牙科制剂。具有大表面积（数百平方米/克）的官能化纳米级增强材料的出现使得能够设计具有新的和复杂的结构的新型纳米复合材料，从而导致增强的机械和物理性能。已经研究了来自一系列聚合物化学物质（PVOH、PLLA、尼龙6）的电纺纳米纤维作为增强相，其含量在0.01和0.3wt.%之间，进行和不进行硅烷偶联剂表面处理。实验结果表明，0.05wt.%用250 nm直径的PVOH纳米纤维增强导致压缩强度提高30%，同时收缩率降低约50%。通过其他化学物质或以其他直径进行的静电纺丝纤维增强显示出没有性能改善或导致性能损失。
The objective of the present study is to investigate the effect of electrospun nanofiber reinforcement on the properties of commercially available, hyperbranched polymer modified (Hybrane, 0.3wt.% DSM) dental formulations. The emergence of functionalized nanoscale reinforcements having large surface area (hundreds of square meters/gram) has enabled the design of novel nanocomposites with new and complex structures leading to enhanced mechanical and physical properties. Electrospun nanofibers from a range of polymer chemistries (PVOH, PLLA, Nylon 6) have been investigated as a reinforcing phase at levels between 0.01 and 0.3wt.%, with and without a silane coupling agent surface treatment. The experimental results indicate that 0.05wt.% reinforcement with 250nm diameter PVOH nanofibers leads to a 30% improvement in compressive strength, coupled with a shrinkage reduction of about 50%. Electrospun fiber reinforcement by other chemistries or at other diameters showed either no property improvement or led to property loss.