화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.57, No.1, 65-72, February, 2019
DOI10.9713/kcer.2019.57.1.65  Export Citation
Poly (phenylene oxide, PPO) 고분자 전해질을 이용한 불균질 바이폴라막 제조 및 물분해 특성
Preparation of Heterogeneous Bipolar Membranes Using Poly (phenylene oxide, PPO) Polyelectrolyte and Their Water Splitting Properties
김인식, 황성연, 강병관, 황택성†
  • 충남대학교 응용화학공학과, 34134 대전광역시 유성구 대학로 99
In Sik Kim, Seong Yeon Hwang, Byung Gwan Kang, and Taek Sung Hwang†
  • Department of Applied Chemical Engineering, Chungnam National University, 99, Daehak-ro, Yuseonng-gu, Daejeon 34134, Korea
E-mail:
초록
본 연구에서는 PPO 이온선택성 용액과 이온교환수지의 혼합비율을 달리하여 캐스팅법으로 불균질 이온교환막을 제조하였고 이를 이용하여 불균질 바이폴라막을 제조하였다. 불균질 양이온교환막 및 음이온교환막의 함수율은 각각 60~80% 이었고 이온교환용량은 2.81~3.26 meq/g, 2.31~2.74 meq/g 이었으며 전기저항은 1.65~1.45Ω·cm2, 1.55~1.05 Ω·cm2 이었다. 또한 불균질 이온교환막의 최대 수지함량은 60 wt% 이었다. 불균질 바이폴라막의 인장강도는 관능화 전 PPO 수지의 인장강도(700 Kgf/cm2) 보다 모두 낮았고, 촉매층이 형성된 불균질 바이폴라막의 인장강도는 무촉매 불균질 바이폴라막보다 인장강도가 낮았다. 또한 촉매층이 형성된 불균질 바이폴라막의 물분해 전압은 최소 1.7~1.8 V, 최대 3.9~4.0 V로 낮고 매우 안정적이었고, 무촉매 불균질 바이폴라막의 물분해 전압은 3.8~4.0 V로 일정하였다.
In this study, heterogeneous ion exchange membranes were prepared by casting method with various mixing ratios of PPO ion-selective solution and ion exchange resin. Then heterogeneous bipolar membranes were prepared by using this. The water content of heterogeneous cation and anion exchange membranes were 60~80% respectively, the ion exchange capacity was 2.81~3.26 meq/g, 2.31~2.74 meq/g and electrical resistances were 1.65~1.45 Ω·cm2 and 1.55 ~1.05 Ω·cm2. The tensile strength of heterogeneous bipolar membrane was lower than that of PPO resin before functionalization (700 Kgf/cm2). The tensile strength of heterogeneous bipolar membrane with catalyst layer was lower than that of non-catalytic heterogeneous bipolar membrane. The water splitting voltage of the heterogeneous bipolar membrane with catalyst layer was low and stable at a minimum of 1.7~1.8 V, maximum 3.9~4.0 V, and the water splitting voltage of the non-catalytic heterogeneous bipolar membrane was constant at 3.8~4.0 V.
Keywords:Heterogeneous cation exchange membrane;Heterogeneous anion exchange membrane;Heterogeneous bipolar membrane;PPO;Ion exchanger resin
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