Synthesis, characterization and bending behavior of electroresponsive sodium alginate/poly(acrylic acid) interpenetrating network films under an electric field stimulus
Synthesis, characterization and bending behavior of electroresponsive sodium alginate/poly(acrylic acid) interpenetrating network films under an electric field stimulus
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DOI：
10.1016/j.snb.2014.06.051
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发表时间：
2014-10-01
影响因子：
8.4
通讯作者：
Gurdag, Gulten
中科院分区：
文献类型：
--
作者：
Bekin, Seda;Sarmad, Shokat;Gurdag, Gulten
研究了戊二醛(GA)交联海藻酸钠/聚丙烯酸(SA-AA-GA)互穿聚合物网络(IPN)薄膜的介电特性和电响应行为。用傅里叶变换红外光谱(FTIR)、X射线衍射仪(X射线衍射仪)、差示扫描量热仪(DSC)和溶胀度测量对薄膜进行了进一步的表征。还制备了海藻酸钠(SA)和SA-AA半互穿网络膜作为对照。研究了丙烯酸初始浓度对SA-AA半IPN和SA-AA-GA全IPN薄膜介电和热性能的影响。聚丙烯酸的存在和SA的GA交联降低了材料的介电常数和电导率。研究了SA-AA-GA薄膜在8V电解液中的弯曲行为与电解液浓度(0.05-0.15M)和薄膜成分的关系。SA-AA-GA薄膜对电场的响应速率随薄膜中PAA含量的增加而降低。在不同浓度的氯化钠溶液中，SA-AA-GA薄膜在0.15M氯化钠溶液中的总弯曲强度最大。(C)2014爱思唯尔B.V.保留所有权利。
Dielectric characterization and electroresponsive behavior of glutaraldehyde (GA) crosslinked sodium alginate/poly(acrylic acid) (SA-AA-GA) interpenetrating polymer network (IPN) films were studied. Further characterizations of the films were performed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and swelling measurements. Sodium alginate (SA) and SA-AA semi-IPN films were also prepared for comparison. The effect of initial concentration of acrylic acid on the dielectric and thermal properties of SA-AA semi-IPN and SA-AA-GA full-IPN films was studied. The presence of poly(acrylic acid) and the crosslinking of SA by GA decreased the dielectric constant and the conductivity values. The bending of SA-AA-GA films in an electrolyte solution at 8 V was investigated as a function of electrolyte (NaCl) concentration (0.05-0.15 M) and the composition of the film. The response rate of SA-AA-GA films to electric field decreased with the increase in PAA content of the film. Amongst the NaCl solutions with various concentrations, the maximum total bending of SA-AA-GA film was obtained in 0.15 M NaCl solution. (C) 2014 Elsevier B.V. All rights reserved.