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通过同时进行金属沉积聚合制备的新型镍/聚甲基丙烯酸羟乙酯接枝聚乙烯吡咯烷酮复合材料：结构与性能

Novel Ni/pHEMA-gr-PVP Composites Obtained by Polymerization with Simultaneous Metal Deposition: Structure and Properties.

作者信息

Grytsenko Oleksandr, Gajdoš Ivan, Spišák Emil, Krasinskyi Volodymyr, Suberlyak Oleh

机构信息

Department of Chemical Technology of Plastics Processing, Lviv Polytechnic National University, 12, St. Bandera str., 79013 Lviv, Ukraine.

Institute of Technologies and Materials, Faculty of Mechanical Engineering, Technical University of Košice, 74 Mäsiarska, 04001 Košice, Slovakia.

出版信息

Materials (Basel). 2019 Jun 18;12(12):1956. doi: 10.3390/ma12121956.

DOI:10.3390/ma12121956
PMID:31216624
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6630917/
Abstract

The synthesis and study of metal-containing hydrogels, particularly those filled with nickel nanoparticles, is currently of interest to many researchers. This paper presents the results of an investigation of the structure and properties of Ni(0)-filled composites on the basis of 2-hydroxyethylmethacrylate copolymers (HEMA) with polyvinylpyrrolidone (PVP) and their hydrogels. The authors of the article are the first who propose the method to produce these materials by combining the processes of polymer matrix synthesis and a reduction of Ni ions. Synthesis is carried out in one stage without complicated equipment and is technologically simple. It is determined by thermometric research that the temperature conditions required for the chemical reduction of Ni are achieved due to the heat released during the exothermic reaction of HEMA polymerization in the presence of PVP. With the help of Fourier transform infrared analysis, and thermogravimetric and differential-thermal analysis, the formation of a crosslinked graft copolymer based on HEMA and PVP was confirmed, and its structural parameters, including the efficiency of PVP grafting, PVP content in the copolymer, and the molecular weight of the interstitial fragment of the polymer network, were investigated. The results obtained with scanning electron microscopy revealed that the size of the Ni(0) particles is about 500 nm. X-ray structural analysis of the composites obtained confirmed the existence of metal nickel particles. The strength, elastic, sorption, electrical, and magnetic properties of the obtained composites in the solid (dry) and elastic (swollen) physical states, depending on the composition of the copolymer and the content of the metal filler, have been investigated.

摘要

含金属水凝胶，特别是填充镍纳米颗粒的水凝胶的合成与研究，目前受到许多研究人员的关注。本文介绍了基于甲基丙烯酸2-羟乙酯共聚物（HEMA）与聚乙烯吡咯烷酮（PVP）及其水凝胶的填充Ni(0)复合材料的结构和性能研究结果。该文章的作者首次提出了通过聚合物基体合成和镍离子还原过程相结合来制备这些材料的方法。合成过程一步完成，无需复杂设备，工艺简单。通过温度测量研究确定，由于在PVP存在下HEMA聚合的放热反应释放的热量，实现了镍化学还原所需的温度条件。借助傅里叶变换红外分析、热重分析和差热分析，证实了基于HEMA和PVP的交联接枝共聚物的形成，并研究了其结构参数，包括PVP接枝效率、共聚物中PVP含量以及聚合物网络间隙片段的分子量。扫描电子显微镜获得的结果表明，Ni(0)颗粒的尺寸约为500 nm。对所得复合材料的X射线结构分析证实了金属镍颗粒的存在。研究了所得复合材料在固体（干燥）和弹性（溶胀）物理状态下的强度、弹性、吸附、电学和磁学性能，这些性能取决于共聚物的组成和金属填料的含量。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c23f/6630917/1b226efea54a/materials-12-01956-g010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c23f/6630917/1b226efea54a/materials-12-01956-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c23f/6630917/9c93533de6ac/materials-12-01956-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c23f/6630917/c24d03793339/materials-12-01956-sch002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c23f/6630917/6acafaca2fdd/materials-12-01956-sch003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c23f/6630917/c5711d8b56d1/materials-12-01956-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c23f/6630917/8d99b836acae/materials-12-01956-g002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c23f/6630917/1b226efea54a/materials-12-01956-g010.jpg

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