Preparation and Characteristics of Heterogeneous Cation Exchange Membrane : 1. Mixing Ratio of Matrix and Ion Exchange Resin

PE계 불균질 양이온 교환막의 제조와 특성:1.결합제와 이온교환수지의 비율에 따른 영향

  • 양현수 (충남대학교 공과대학 공업화학과) ;
  • 조병하 (충남대학교 공과대학 공업화학과) ;
  • 강봉규 (한국정수공업(주) 부설연구소) ;
  • 이태원 (한국전력 기술연구원)
  • Received : 1996.08.12
  • Accepted : 1996.11.11
  • Published : 1996.12.10


Heterogeneous cation exchange membrane(HCEM) was prepared with LLDPE(Linear Low Density Poly-ethylene) as binder, powdered cation exchange resins($diameter{\leq}149{\mu}m$) as ion-exchange material and glycerol as additive for electrodialysis and electrodeionization system. The weight ratio of (binder/ion exchange)/glycerol was (60%/40%)/5%, (55%/45%)/5%, (50%/50%)/5% and (40%/60%)/5%. The characterization of prepared HCEM was evaluated on mechanical, electrochemical, morphology and ion permeable properties. It was compared with commercial membrane. Electrochemical properties of HCEM of (50%/50% )/5% were very similar to value of IONPURE(commercial membrane), in which ion exchange capacity, ion transfer number and membrane resistance were to be 1.733meq/g, 0.96 and $16.08{\Omega}/cm^2$, respectively. Ion permeability of the membrane was better than that of IONPURE membrane. Compared with IONPURE membrane, the HCEM had a higher tensile strength and lower elongation and modulus, in which HCEM had tensile strength of $62.33kg/cm^2$, elongation of 87.42% and modulus of $658.53kg/cm^2$. The HCEM of (50%/50% )15% was optimum combination.



Grant : 중소기업육성 연구과제

Supported by : 한국전력 연구원


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