Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran; Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
Ultrason Sonochem. 2018 May;43:91-100. doi: 10.1016/j.ultsonch.2017.12.052. Epub 2018 Jan 2.
The aim of this paper was to blend the polymers, poly(N-vinyl-2-pyrrolidone) (PVP) and poly(vinyl alcohol) (PVA) to produce a novel composite materials possessing the benefits of both. CuO nanoparticles (NPs) were used as a suitable filler to fabricate the blend nanocomposites (NCs) with desired properties. First, the surface of NPs, was modified with vitamin B (VB) as a bio-safe coupling agent. Then, the blend NCs with various ratios of modified CuO (3, 5, and 7 wt%) were fabricated under ultrasonic irradiations followed by casting/solvent evaporation method. These processes are fast and green way to disperse the NPs sufficiently. Several techniques were applied for the characterization of the obtained NCs. morphology examination demonstrated the morphology of NCs and compatibility of NPs with the blend polymer. EDX results indicated the weight and atomic percentage of the achieved materials. TGA analysis verified that the NCs show higher thermal properties than the neat blend polymer. Also embedding the modified NPs into the blend polymer had effected on optical absorbance of the obtained NCs. The contact angle measurements confirmed that the hydrophilicity decreased for different proportions of the modified NPs loaded in the blend polymer. Finally, NCs show better bactericidal effects against gram-positive than gram-negative bacteria.
本文旨在将聚合物聚（N-乙烯基-2-吡咯烷酮）（PVP）和聚乙烯醇（PVA）进行共混，以生产兼具两者优势的新型复合材料。氧化铜纳米颗粒（NPs）被用作合适的填充剂，通过超声辐射和浇铸/溶剂蒸发法制备具有所需性能的共混纳米复合材料（NCs）。然后，用维生素 B（VB）作为生物安全偶联剂对 NPs 的表面进行改性。这些过程是快速且环保的方法，可以充分分散 NPs。采用了几种技术对所得 NCs 进行了表征。形貌检查显示了 NCs 的形貌以及 NPs 与共混聚合物的相容性。EDX 结果表明了所获得材料的重量和原子百分比。TGA 分析证实 NCs 比纯共混聚合物具有更高的热性能。此外，将改性 NPs 嵌入共混聚合物中会影响所得 NCs 的光吸收。接触角测量证实，随着共混聚合物中负载的改性 NPs 比例的不同，其亲水性会降低。最后，NCs 对革兰氏阳性菌的杀菌效果优于革兰氏阴性菌。
