Article
  • Water-based Preparation of ZIF-8/Polyurethane Membranes
  • Ye-Chan Lee, Yun-Gyeong Jeong, and Youn-Sik Lee

  • Division of Chemical Engineering, Jeonbuk National University, 567 Baekje-Daero, Deokjin-gu, Jeonju, Jeonbuk 54896, Korea

  • 물을 사용한 ZIF-8/폴리우레탄 멤브레인의 제조
  • 이예찬 ·정윤경 ·이연식

  • 전북대학교 화학공학부

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

In order to extend application field and improve processability of crystalline metal-organic frameworks (MOFs), recently MOF/polymer hybrid membranes have been actively studied. Such membranes are generally prepared from polymer solutions and MOF particles. In this research, we chose zeolitic imidazolate framework-8 (ZIF-8), one of MOF families, and attempted to prepare ZIF-8/polymer hybrid membranes without using any organic solvent. In order to improve dispersibility of ZIF-8 particles, ZIF-8 was prepared from an aqueous solution containing Zn2+, 2-methylimidazole and polystyrene sulfonate (PSS). Through dispersion of PSS@ZIF-8 particles along with a dispersing agent into a polyurethane (PU) emulsion and casting on a polystyrene substrate, transparent ZIF-8/PU membranes were successfully prepared (PSS@ZIF-8 content: maximum 41 wt%), and characterized with respect to their tensile properties and water uptakes.


최근에 금속-유기 구조체(MOF)의 응용범위 확대와 가공성 향상을 위하여 MOF/고분자 하이브리드 멤브레인에 대한 연구들이 활발하게 진행되고 있는데, 멤브레인들은 일반적으로 고분자 용액과 MOF 입자로부터 제조된다. 본 연구에서는 MOF의 일종인 zeolitic imidazolate framework-8(ZIF-8)를 선택하여 유기용매를 사용하지 않는 방법으로 ZIF-8/고분자 하이브리드 멤브레인을 제조하고자 하였다. 먼저 ZIF-8 나노입자의 분산성을 향상시키기 위하여 Zn2+, 2-methylimidazole 및 술폰산화 폴리스티렌(PSS) 수용액으로부터 PSS@ZIF-8 나노입자를 합성한 후, 분산제와 함께 폴리우레탄(PU) 에멀젼에 분산시키고 폴리스티렌 기판 위에 캐스팅함으로써, 투명한 ZIF-8/PU 멤브레인을 성공적으로 제조하였으며 멤브레인의 인장특성과 함수율을 고찰하였다(PSS@ZIF-8 함량: 최대 41 wt%).


Keywords: metal-organic framework, zeolitic imidazolate framework-8, polyurethane emulsion, zeolitic imidazolate framework-8/polyurethane hybrid membrane.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2022; 46(6): 820-826

    Published online Nov 25, 2022

  • 10.7317/pk.2022.46.6.820
  • Received on Jul 29, 2022
  • Revised on Aug 24, 2022
  • Accepted on Sep 16, 2022

Correspondence to

  • Youn-Sik Lee
  • Division of Chemical Engineering, Jeonbuk National University, 567 Baekje-Daero, Deokjin-gu, Jeonju, Jeonbuk 54896, Korea

  • E-mail: yosklear@jbnu.ac.kr