A4 Paper Chemistry: Synthesis of a Versatile and Chemically Modifiable Cellulose Membrane

Eungjin Ahn, Taehyung Kim, Yuju Jeon, Byeong Su Kim

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


Multifunctional cellulose membranes were developed from A4-sized printing paper via chemical modification. A4 paper is a widely used and easily accessible product with high cellulose content. Inspired by cellulose chemistry, we report a simple modification of the A4 paper, converting it from a common office supply to a user-modifiable functionalized cellulose membrane for practical applications. The hydroxyl groups of cellulose enable a facile tuning of its internal structure and polarity via chemical modification. In addition, the functionalized cellulose membrane has more stable mechanical strength compared to commercial cellulose-based filtration membranes. As a proof-of-concept, we demonstrate the separation of a water/oil mixture using the functionalized A4 membrane; we have extended this idea to origami-assisted membrane applications. Finally, this versatile A4 paper chemistry may offer a promising strategy for the development of functional membranes.

Original languageEnglish
Pages (from-to)6173-6180
Number of pages8
JournalACS Nano
Issue number5
Publication statusPublished - 2020 May 26

Bibliographical note

Publisher Copyright:
Copyright © 2020 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy


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