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The Membrane Society of Korea (한국막학회)
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Preparation and Characterization of Chitosan Membranes Cross-linked Using Poly(2,6-dimethyl-1,4-phenylene oxide) Polymer and Chitosan

Poly(2,6-dimethyl-1,4-phenylene oxide) 고분자와 키토산을 이용한 가교막 제조 및 특성평가

  • Son, Tae Yang (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University) ;
  • Ko, Tae Ho (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University) ;
  • Jung, Ji Hye (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University) ;
  • Hong, Jun Ui (Department of polymer science and engineering, Gyeongsang National University) ;
  • Nam, Sang Yong (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
  • 손태양 (경상대학교 나노신소재융합공학과) ;
  • 고태호 (경상대학교 나노신소재융합공학과) ;
  • 정지혜 (경상대학교 나노신소재융합공학과) ;
  • 홍준의 (경상대학교 고분자공학과) ;
  • 남상용 (경상대학교 나노신소재융합공학과)
  • Received : 2018.06.28
  • Accepted : 2018.06.30
  • Published : 2018.06.30
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Abstract

In this study, cross-linked membrane were successfully prepared by using brominated PPO (Br-PPO) as the main polymer chain. Chitosan and quaternary ammonium modified chitosan (QA-chitosan) was used as the cross linking agents. The cross linked membranes were post-functionalized by using trimethylamine solution. The degree of cross linking was also controlled by varying the ratio of cross linking agent. The applicability of the cross-linked membrane (A-PPO + chitosan, A-PPO + QA-chitosan) as ion exchange membranes was verified through various characterization techniques. The cross-linked membrane using QA-chitosan as cross linking agent was found to be better in performance than the membrane using pristine chitosan cross linking agent. As the percentage of QA-chitosan increased, the ion exchange capacity from 1.18 meq/g to 1.53 meq/g and water uptake from 21.6% to 42.2% was improved.

본 연구에서는 가교막을 poly(2,6-dimethyl-1,4-phenylene oxide)(PPO)에 브롬화반응을 통해 제조한 Br-PPO를 주사슬로 성공적으로 제조하였고, 키토산과 4차암모늄이 포함된 키토산을 가교제로 사용하였다. 제조된 가교막은 트리메틸아민 용액에 함침하여 후처리를 진행하였다. 그리고 가교도는 가교제 비율을 이용하여 조절하였다. 이렇게 제조된 A-PPO + chitosan 가교막과 A-PPO + QA-chitosan 가교막의 이온교환막으로써의 가능성을 여러 특성평가로 확인하였다. Chitosan을 사용한 가교막보다 QA-chitosan을 사용한 가교막이 가교가 더 잘 이루어졌으며, QA-chitosan의 함량이 증가할수록 이온교환용량이 1.18 meq/g에서 1.53 meq/g까지 증가하는 경향, 함수율이 21.6%에서 42.2%까지 증가하는 경향을 나타내었다.

Keywords

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