文章基本信息

标题：Wettability and sound absorption of graphene oxide doped polymer hydrogel
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作者：A. Khosrozadeh ; R. Rasuli ; H. Hamzeloopak 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2021
卷号：11
DOI：10.1038/s41598-021-95641-z
语种：English
出版社：Springer Nature
摘要：In this paper, we introduce a nanocomposite as a humidity-sensitive sound absorber. The nanocomposites were prepared using hydrogel polymer (HP) as a matrix and graphene oxide (GO) as a filler. Results show that the surface energy of the nanocomposite is 58.4 mJ m −2, and GO sheets increase the nanocomposite porosity from 2.6716 cm 2 g −1 (for HP) up to 3.246 cm 2 g −1. In addition, the diameter of nanocomposite pores is 8.5202 nm lower than that of HP (10.274 nm). To study the effect of humidity on the sound absorption, we exposed them to moisture for 30 and 60 min and then measured sound absorption. Results show an absorption peak for the HP at 1022 Hz with an attenuation value of 30%, while the nanocomposite shows two main peaks around 1898 and 3300 Hz. In addition, results show that sound absorption peaks shift to higher frequencies according to humidification time.