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Ultrasonic-microwave assisted synthesis of three-dimensional polyvinyl alcohol carbonate/graphene oxide sponge and studies of surface resistivity and thermal stability
Ultrasonics Sonochemistry ( IF 8.7 ) Pub Date : 2017-12-19 , DOI: 10.1016/j.ultsonch.2017.12.037
Yunna Song , Yuehai Li , Jihui Li , Yongshen Li , Shuai Niu , Ning Li

In the article, graphene oxide (GO) was prepared by flake graphite, nitric acid and peroxyacetic acid via the sonochemical method and characterized, and polyvinyl alcohol carbonate/GO composite (PVAC/GO composite) was synthesized by polyvinyl alcohol (PVA), dimethyl carbonate (DMC) and GO via the approach of transesterification in the case of ultrasonic-microwave synergistic effects and characterized, and three-dimensional PVAC/GO sponge (3D PVAC/GO sponge) was manufactured by PVAC/GO composite via the foaming approach and characterized, and the thermal stability and surface resistivity of 3D PVAC/GO sponge were investigated. Based on those, it had been attested that PVAC polymer was structured by DMC and PVA and had the six-membered lactone rings and the ether bonds, and PVAC/GO composite was constituted by 2D GO lattice and PVAC polymer, and 3D PVAC/GO sponge was constructed by PVAC/GO composite, and the surface resistivity of 3D PVAC/GO sponge with 0.00, 0.60, 1.20, 1.80 and 2.40 g of GO were 9.07 × 107, 6.02 × 107, 4.65 × 107, 2.47 × 107 and 1.06 × 107 ohms/sq, and the thermal stability of 3D PVAC/GO sponge had improved.



中文翻译:

超声波辅助合成三维聚乙烯醇碳酸酯/氧化石墨烯海绵及其表面电阻率和热稳定性的研究

文章通过声化学方法,由鳞片状石墨,硝酸和过氧乙酸制备了氧化石墨烯(GO),并对其进行了表征,并用聚乙烯醇(PVA),二甲基合成了聚乙烯醇碳酸酯/ GO复合物(PVAC / GO复合物)。在超声波-微波协同作用的情况下,通过酯交换的方式合成碳酸根(DMC)和GO,并进行了表征,并通过发泡方法通过PVAC / GO复合材料制造了三维PVAC / GO海绵(3D PVAC / GO海绵),并表征,并研究了3D PVAC / GO海绵的热稳定性和表面电阻率。在此基础上,证明PVAC聚合物由DMC和PVA构成,具有六元内酯环和醚键,PVAC / GO复合物由2D GO晶格和PVAC聚合物构成,7,6.02×10 7,4.65×10 7,2.47×10 7 1.06×10 7欧姆/平方,和3D PVAC / GO海绵的热稳定性得到了改善。

更新日期:2017-12-19
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