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Preparation of zwitterionic lignin/Nafion composite membranes for proton exchange membrane

첫 페이지 보기
  • 발행기관
    강원대학교 산림과학연구소 바로가기
  • 간행물
    강원대학교 산림과학연구소 학술대회 바로가기
  • 통권
    2022 International symposium of Institute of Forest Science for the 40th Anniversary of College of Forest and Environment Science (2022.10)바로가기
  • 페이지
    pp.68-68
  • 저자
    Ji Won Heo, Min Soo Kim, Ji Woo Kim, Zhili Zhang, Yong Sik Kim
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A450444

원문정보

초록

영어
In this study, a novel zwitterion-decorated lignin (ZL) containing amine and sulfonic acid groups was synthesized and ZL/Nafion composite membranes was fabricated to evaluate its effectiveness as a membrane additive. Kraft lignin was modified using amino-silane and 1,3-propanesultone by continuous grafting reaction to provide zwiterionic moieties structures. Chemical structural analyses confirmed the successful introduction of zwitterion moieties structure onto lignin. Especially, the surface charge of ZL was positive in acidic medium, and negative in basic medium, suggesting that ZL exhibited zwitterionic material. The ZL, an additive, was incorporated with the Nafion to enhance excellent ion exchange capacity and hydrophilicity. The proton conductivity of the ZL/Nafion is slightly lower than that of pure Nafion. On the other hand, it was confirmed that the addition of ZL in Nafion was significantly effective for proton conductivity compared to the addition of unmodified lignin. The reason is that the presence of amine groups in ZL can contribute to good dispersion and the presence of sulfonic acid groups preserves and further improves the continuity of the proton pathway inside the Nafion matrix. In addition, ZL may play a role in enhancing thermal stability, hydrophilicity, ion exchange capacity, and proton conductivity. Therefore, ZL is expected to be utilized as a multifunctional additive and has potential in fuel cell applications.

키워드

lignin zwitterion Nafion proton conductivity proton exchange membrane

저자

  • Ji Won Heo [ Department of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University ]
  • Min Soo Kim [ Department of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University ]
  • Ji Woo Kim [ Department of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University ]
  • Zhili Zhang [ Changgang Institute of Paper Science and Technology, Kangwon National University ]
  • Yong Sik Kim [ Department of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University ] Corresponding Author

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    강원대학교 산림과학연구소 [Institute of Forest Science Kangwon National University]
  • 설립연도
    1975
  • 분야
    농수해양>임학
  • 소개
    강원대학교부설산림과학연구소(이하 “연구소”라 한다)는 산림에 관한 제반 학술적 연구를 통하여 산림자원의 효용을 밝히고 임업 및 임산업의 발전에 기여함을 목적으로 한다.

간행물

  • 간행물명
    강원대학교 산림과학연구소 학술대회
  • 간기
    부정기
  • 수록기간
    2017~2024
  • 십진분류
    KDC 526 DDC 634

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