文章摘要
王吉林.基于环糊精分子构筑主客体络合物型阴离子导电膜[J].精细化工,2019,36(9):
基于环糊精分子构筑主客体络合物型阴离子导电膜
Preparation of a full interpenetrating network anion conductive membrane using cyclodextrin host-guest complex
投稿时间:2018-11-08  修订日期:2019-03-26
DOI:
中文关键词: β-环糊精  主客体络合  全互穿网络  阴离子导电膜  耐碱稳定性
英文关键词: β-cyclodextrin  host-guest complexation  full interpenetrating network  anion conductive membrane  alkali stability
基金项目:
作者单位E-mail
王吉林 辽宁石油化工大学 wangjilin1978@163.com 
摘要点击次数: 139
全文下载次数: 0
中文摘要:
      将β-环糊精(β-CD)引入到以聚乙烯醇(PVA)和季铵化壳聚糖(QCS)为膜基质的混合铸膜液中,然后借助联合交联剂(戊二醛〔GA〕+三聚氰胺〔MA〕)将前述铸膜液中的三种物质交联,制备一系列环糊精含量不同、具有全互穿网络结构的主客体络合物型导电膜(CDX-QCSY-PVAY)OH-。结果表明,随着β-环糊精质量分数增加,羟基含量增加,络合Ca2+吸附OH-数量增加,离子交换量、电导率与拉伸强度等均呈上升趋势,但含水率、溶胀度与断裂伸长率呈下降趋势。当β-环糊精质量分数为20%时,导电膜综合性能最佳。此时含水率为91.3%,溶胀度为83.4%,拉伸强度为69.5 MPa,断裂伸长率为48.5%,离子交换量为2.64 mmol/g,电导率为7.1×10-2 S/cm(70 ℃)。在70 ℃、6 mol/L KOH溶液中上述膜样品在泡碱240 h后的电导率降低了17%,具有较好的耐碱稳定性。
英文摘要:
      Introduced β-cyclodextrin (β-CD) into a mixed casting solution using polyvinyl alcohol (PVA) and quaternized chitosan (QCS) as a film matrix, and then crosslinked three substances in the aforementioned casting solution through a combined crosslinking agent (glutaraldehyde (GA) and melamine (MA)), a series of host-guest complex (CDX-QCSY-PVAY) OH- conductive membranes based on cyclodextrin molecule with full interpenetrating network structure were prepared. The results showed that with the growth of β-cyclodextrin content, the content of —OH increased, and the amount of OH- adsorption by complexing Ca2+ increasesed, cause to the ion exchange capacity(IEC) and conductivity and tensile strength and so on increased, but water uptake, swelling ratio and elongation at break decreased. When the content of β-cyclodextrin was 20%, the comprehensive performance was the best. The water uptake and swelling ratio were 91.3% and 83.4%, separately, the tensile strength and elongation at break were 69.5% and 48.5%. And the ion exchange capacity was 2.64 mmol/g, conductivity can reached 7.1 × 10-2 S/cm at 70 ℃. The conductivity of the above film samples can reached 83% of the original conductivity after soaking for 240 h in an alkaline environment of 6 mol/L KOH solution at 70 ℃, and still maintained good alkali stability.
  查看/发表评论  下载PDF阅读器
关闭