Article
  • Hydrophobic Layer-by-Layer Film Assembled Using Poly(ethylene-co-acrylic acid) Ionomer
  • Choonghyun Sung and Jooyoung Kim

  • Polymeric Materials Engineering Major, Dong-eui University, 176 Eomgwangro, Busanjin-gu, Busan 47340, Korea

  • Poly(ethyelene-co-acrylic acid) 이오노머를 이용한 소수성 다층박막
  • 성충현 · 김주영

  • 동의대학교 고분자소재공학전공

  • 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

Recently, layer-by-layer (LbL) assembled superwetting surfaces have attracted great interest. Here, hydrophobic LbL films were prepared using poly(ethylene-co-acrylic acid) (PEAC) ionomer and poly(allylamine hydrochloride) (PAH). PEAC was dispersed in tetrahydrofuran/water mixture and solution pH was adjusted to control colloid size and dispersion stability. pH of PAH solution was adjusted to control the ionization of PAH. Surface morphology of PAH/PEAC LbL film was greatly influenced by pH of PAH solution. When the pH of PAH was 3.0 and 5.0, relatively smooth surface were obtained. In contrast, at the pH of 7.0 and 9.0, porous hierarchical structure appeared. Water contact angle of LbL films increased from 95° to 132° as the pH of PAH solution increased from 3.0 to 9.0. In addition, hierarchical structure was stable at aqueous solution of pH 11.0, but it partially dissolved at pH 2.2.


최근, 다층박막적층법을 이용한 초젖음성 표면에 대한 연구가 관심을 받고 있다. Poly(ethylene-co-acrylic acid)(PEAC) 이오노머와 약전해질 poly(allylamine hydrchloride)(PAH)를 이용하여 소수성 다층박막을 제조하였다. PEAC는 tetrahydrofuran과 증류수 혼합 용액의 pH를 조절하여 고분자 콜로이드의 크기와 분산 안정성을 조절하였다. 또한 PAH 용액의 pH를 통하여 PAH의 이온화도를 조절하였다. 다층박막의 표면 모폴로지는 PAH 용액의 pH에 크게 영향을 받았다. PAH 용액의 pH가 3.0, 5.0인 경우, 비교적 매끄러운 표면이 나타났으며, pH가 7.5, 9.0의 경우에는 다공성 계층 구조가 나타났다. PAH 용액의 pH가 증가함에 따라 물접촉각은 95°에서 132° 정도로 증가하였다. 이러한 계층 구조는 pH 11.0 수용에서는 안정하였으나, pH 2.2에서는 부분적인 용해가 발생하였다.


Keywords: layer-by-layer, hydrophobic, ionomer, polyelectrolyte, multilayer.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2020 Impact Factor : 0.493
  • Indexed in SCIE

This Article

  • 2021; 45(6): 915-921

    Published online Nov 25, 2021

  • 10.7317/pk.2021.45.6.915
  • Received on Jul 19, 2021
  • Revised on Aug 8, 2021
  • Accepted on Aug 8, 2021

Correspondence to

  • Choonghyun Sung
  • Polymeric Materials Engineering Major, Dong-eui University, 176 Eomgwangro, Busanjin-gu, Busan 47340, Korea

  • E-mail: chsung@deu.ac.kr