ISSN : 1226-0088(Print)
ISSN : 2288-7253(Online)
ISSN : 2288-7253(Online)
Membrane Journal Vol.25 No.2 pp.144-151
DOI : https://doi.org/10.14579/MEMBRANE_JOURNAL.2015.25.2.144
DOI : https://doi.org/10.14579/MEMBRANE_JOURNAL.2015.25.2.144
Studies on the Preparation and Characterization of PVA Based Cation-exchange Membranes for DMFC Application
March 5, 2015
April 8, 2015
April 14, 2015
Abstract
The water-soluble poly(vinyl alcohol) membranes with the addition of sulfosuccinic acid (SSA) were prepared and to assign the ion exchange capacity, poly(4-styrene sulfonic acid-co-maleic acid) (PSSA_MA) was added to PVA according to PSSA_MA contents of 70, 80 and 90 wt%. To characterize the resulting membranes, FT-IR, water contents, ion exchange capacity, proton conductivity and methanol permeability were measured. As PSSA_MA contents increased, water contents, ion exchange capacity, proton conductivity increased, but methanol permeability decreased. From these results, the best preparation component was known as PVA10/SSA9/PSSA_MA80.
PVA, Poly vinyl alcohol, SSA, Sulfosuccinic acid, PSSA_MA, Poly(4-styrene sulfonic acid-co-maleic acid), DMFC, direct methanol fuel cell
직접 메탄올 연료전지 적용을 위한 PVA 기반 양이온교환막 제조 및 특성연구
초록
수용성 고분자인 poly(vinyl alcohol) (PVA)에 가교제인 sulfosuccinic acid (SSA)를 첨가하여 가교반응을 통해 물에 용해되지 않는 막을 제조하였으며, 이온교환능력을 부여하기 위해 poly(4-styrene sulfonic acid-co-maleic acid) (PSSA_MA)를 PVA 질량대비 70, 80, 90 wt%로 달리 첨가하여 막을 제조하였다. 제조한 막의 특성을 알아보기 위해 FT-IR, 함수율, 이온교환 용량, 이온전도도, 메탄올 투과도를 측정하였다. 함수율과 이온교환용량, 이온전도도는 PSSA_MA 함량이 증가할수록 증가하는 경향을 나타내었으며 메탄올 투과도는 감소하는 경향을 나타내었다. 특성평가 결과 본 실험 막의 최적 조성은 PVA10/SSA9/ PSSA_MA80으로 도출되었다.