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 Mar;41:1-10. doi: 10.1016/j.ultsonch.2017.09.017. Epub 2017 Sep 8.
In this study, for the first time polymeric nanocomposite (NC) films of poly(vinyl alcohol)/SiO@bovine serum albumin (PVA/SiO@BSA) were synthesized by solution casting method under facile and fast method of sonication. In this regard, SiO nanoparticles (NPs) were modified by BSA, at room temperature by using phosphate buffer and ultrasonic-assisted method. Then, PVA/SiO@BSA NCs were prepared by insertion of variant amount (3, 6 and 9wt%) of SiO@BSA into the PVA matrix, under ultrasonic irradiation. The morphological traits of the NCs were surveyed by Fourier transform infrared spectroscopy, transmission electron microscopy, X-ray diffraction and field emission scanning electron microscopy. It was detected that NPs incorporation didn't remarkably affect the crystallinity and morphology of the NCs. TEM images indicated that the inserted NPs have good diffusions in the PVA matrix, and their embedment in the matrix significantly upgraded its thermal, optical and mechanical behaviors. The tensile strength showed more than 2-fold increase and the thermal stability exhibited about 37% enhancement that was higher, in comparison with those of the similar NCs. This showed that the prepared NCs can have potential application in food packaging.∗∗∗.
在这项研究中，首次通过简便快速的超声法，采用溶液浇铸法合成了聚（聚乙烯醇）/SiO@牛血清白蛋白（PVA/SiO@BSA）聚合纳米复合材料（NC）薄膜。在此，通过磷酸盐缓冲液和超声辅助方法，在室温下对 SiO 纳米颗粒（NPs）进行 BSA 修饰。然后，通过超声辐射，将不同量（3、6 和 9wt%）的 SiO@BSA 插入 PVA 基质中，制备 PVA/SiO@BSA NCs。通过傅里叶变换红外光谱、透射电子显微镜、X 射线衍射和场发射扫描电子显微镜对 NCs 的形态特征进行了研究。检测到 NPs 的掺入并没有显著影响 NCs 的结晶度和形态。TEM 图像表明，插入的 NPs 在 PVA 基质中具有良好的扩散性，其在基质中的嵌入显著提高了其热、光和机械性能。拉伸强度提高了两倍以上，热稳定性提高了约 37%，与类似 NCs 相比，这一数值更高。这表明所制备的 NCs 可能具有在食品包装中的潜在应用。∗∗∗。
