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首页> 外文期刊>Journal of Applied Polymer Science >Development of a difunctional oxirane and multifunctional acrylate interpenetrating polymer network composite system with antimicrobial properties
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Development of a difunctional oxirane and multifunctional acrylate interpenetrating polymer network composite system with antimicrobial properties

机译：具有抗微生物性质的双官能氧化乙烷和多官能丙烯酸酯间隙聚合物网络复合系统的研制

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摘要

This research continued the development of a difunctional Oxirane and multifunctional Acrylate interpenetrating polymer network composite System (OASys) with antimicrobial properties. The effects of 4-Isopropyl-4 '-methyldiphenyliodonium tetrakis (pentafluorophenyl) borate (Borate), hexamethylene diamine (HMDA) and N,N-dimethyl p-toluidine (DMPT) on OASys (Epalloy 5001:dipentaerythritol hexaacrylate) composite hardness, contact angle, monomer-to-polymer degree of conversion (DoC), mechanical properties, polymerization shrinkage, shrinkage stress, and antimicrobial properties were determined. Bis-GMA:TEGDMA composites were used as the control. OASys composites with 9 wt% Borate and 0.5 wt% DMPT or 1.5 wt% HMDA had comparable hardness, DoC's and polymerization shrinkages to controls, but had lower contact angles and mechanical properties. Additionally, OASys composites with 1.5 wt% HMDA had significantly less polymerization stress than controls and demonstrated significant antibacterial activity against Streptococcus mutans and Lactobacillus casei out to 3 months. With lower shrinkage stress and long-term antimicrobial activity, OASys composites look promising for increasing the clinical lifetime of dental composites, but improvements in mechanical properties are needed.
机译：本研究继续开发具有抗菌性能的双功能环氧乙烷和多功能丙烯酸酯互穿聚合物网络复合系统（OASys）。研究了4-异丙基-4'-甲基二苯基碘铵四（五氟苯基）硼酸盐（硼酸盐）、六亚甲基二胺（HMDA）和N，N-二甲基对甲苯胺（DMPT）对OASys（Epalloy 5001：六丙烯酸二季戊四醇酯）复合材料硬度、接触角、单体-聚合物转化率（DoC）、力学性能、聚合收缩率、收缩应力、，并对其抗菌性能进行了测定。Bis-GMA:TEGDMA复合材料作为对照。含9 wt%硼酸盐和0.5 wt%DMPT或1.5 wt%HMDA的OASys复合材料的硬度、DoC和聚合收缩率与对照组相当，但接触角和机械性能较低。此外，含1.5 wt%HMDA的OASys复合材料的聚合应力显著低于对照组，并且在3个月内对变形链球菌和干酪乳杆菌表现出显著的抗菌活性。OASys复合材料具有较低的收缩应力和长期抗菌活性，有望延长牙科复合材料的临床使用寿命，但仍需改善其力学性能。

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