Vlad-Bubulac Tăchiță, Hamciuc Corneliu, Serbezeanu Diana, Macsim Ana-Maria, Lisa Gabriela, Anghel Ion, Preda Dana-Maria, Kalvachev Yuri, Rîmbu Cristina Mihaela
Department of Polycondensation and Thermally Stable Polymers, "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania.
Department of Chemical Engineering, Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iasi, 73 Bd. Mangeron, 700050 Iasi, Romania.
Molecules. 2023 Jul 26;28(15):5650. doi: 10.3390/molecules28155650.
The design and manufacture of innovative multifunctional materials possessing superior characteristics, quality and standards, rigorously required for future development of existing or emerging advanced technologies, is of great importance. These materials should have a very low degree of influence (or none) on the environmental and human health. Adjusting the properties of epoxy resins with organophosphorus compounds and silver-containing additives is key to the simultaneous improvement of the flame-resistant and antimicrobial properties of advanced epoxy-based materials. These environmentally friendly epoxy resin nanocomposites were manufactured using two additives, a reactive phosphorus-containing bisphenol derived from vanillin, namely, (4-(((4-hidroxyphenyl)amino)(6-oxido-6H-dibenzo[c,e][1,2]oxaphosphinin-6-yl)methyl)-2-methoxyphenyl) phenylphosphonate (BPH), designed as both cross-linking agent and a flame-retardant additive for epoxy resin; and additional silver-loaded zeolite L nanoparticles (Ze-Ag NPs) used as a doping additive to impart antimicrobial activity. The effect of BPH and Ze-Ag NPs content on the structural, morphological, thermal, flame resistance and antimicrobial characteristics of thermosetting epoxy nanocomposites was investigated. The structure and morphology of epoxy nanocomposites were investigated via FTIR spectroscopy and scanning electron microscopy (SEM). In general, the nanocomposites had a glassy and homogeneous morphology. The samples showed a single glass transition temperature in the range of 166-194 °C and an initiation decomposition temperature in the range of 332-399 °C. The introduction of Ze-Ag NPs in a concentration of 7-15 wt% provided antimicrobial activity to epoxy thermosets.
设计和制造具有卓越特性、质量和标准的创新多功能材料对于现有或新兴先进技术的未来发展至关重要，这些特性、质量和标准是未来发展所严格要求的。这些材料对环境和人类健康的影响程度应非常低（或无影响）。用有机磷化合物和含银添加剂调节环氧树脂的性能是同时提高先进环氧基材料阻燃和抗菌性能的关键。这些环保型环氧树脂纳米复合材料是使用两种添加剂制造的，一种是由香草醛衍生的含反应性磷的双酚，即(4 - (((4 - 羟基苯基)氨基)(6 - 氧化 - 6H - 二苯并[c,e][1,2]氧杂磷杂环庚三烯 - 6 - 基)甲基)-2 - 甲氧基苯基)苯基膦酸酯(BPH)，它被设计为环氧树脂的交联剂和阻燃添加剂；另一种是额外的载银沸石L纳米颗粒(Ze - Ag NPs)，用作掺杂添加剂以赋予抗菌活性。研究了BPH和Ze - Ag NPs含量对热固性环氧纳米复合材料的结构、形态、热性能、阻燃性和抗菌特性的影响。通过傅里叶变换红外光谱(FTIR)和扫描电子显微镜(SEM)研究了环氧纳米复合材料的结构和形态。一般来说，纳米复合材料具有玻璃态且均匀的形态。样品的玻璃化转变温度在166 - 194℃范围内，起始分解温度在332 - 399℃范围内。以7 - 15 wt%的浓度引入Ze - Ag NPs赋予了环氧热固性材料抗菌活性。
