摘要
以五氧化二磷,磷酸三乙酯和磷酸为反应剂,制备了磷酸化羧甲基纤维素(CMC),经Fe3+改性后用作为阳膜;以壳聚糖(CS)和聚乙烯醇共混物用戊二醛改性后用作为阴膜溶胶,将阴膜溶胶流延于阳膜上,制备了P-mCMC/mCS双极膜。测定了CS、CMC胶体的电荷密度,离子透过率,P-mCMC/mCS双极膜的红外光谱与离子交换能力。IR与接触角测定的结果表明,CMC经改性后其亲水性能得到了显著提高。膜交流阻抗、I-V工作曲线的测定结果表明该双极膜阻抗及工作电压均较小。
Phosphorylation carboxymethyl cellulose （CMC） membrane was synthesized by phosphorus pentaoxide, triethyl phosphate and phosphoric acid, then modified by Fe^3＋ as a linking reagent; chitosan（CS） was modified by glutaraldehyde, then blend with PVA. The P-mCMC/mCS bipolar membrane was characterized by FTIR, AC impedance, I-V curves and ion exchange capacity. The results of IR and contact angle analysis showed that the hydrophilic property of CMC is improved after modification. Both of the membrane impedance and the working voltage of the P-mCMC/mCS bipolar membrane are small.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2009年第4期663-667,共5页
Chinese Journal of Inorganic Chemistry
基金
福建省科技厅福建省自然科学基金项目(No.D0710009)
关键词
双极膜
磷酸化
羧甲基纤维素
壳聚糖
bipolar membrane
phosphorylation
carboxymethyl cellulose
chitosan
