Superhydrophobic Polymer Composite Surfaces Developed via Photopolymerization

Shreyas Pathreeker, Paul Chando, Fu Hao Chen, Saeid Biria, Hansheng Li, Eric Finkelstein, Ian D. Hosein

Research output: Contribution to journalArticlepeer-review

Abstract

Fabrication of superhydrophobic materials using incumbent techniques involves several processing steps and is therefore either quite complex, not scalable, or often both. Here, the development of superhydrophobic surface-patterned polymer-TiO2 composite materials using a simple, single-step photopolymerization-based approach is reported. The synergistic combination of concurrent, periodic bump-like pattern formation created using irradiation through a photomask and photopolymerization-induced nanoparticle (NP) phase separation enables the development of surface textures with dual-scale roughness (micrometer-sized bumps and NPs) that demonstrate high water contact angles, low roll-off angles, and desirable postprocessability such as flexibility, peel-and-stick capability, and self-cleaning capability. The effect of nanoparticle concentration on surface porosity and consequently nonwetting properties is discussed. Large-area fabrication over an area of 20 cm2, which is important for practical applications, is also demonstrated. This work demonstrates the capability of polymerizable systems to aid in the organization of functional polymer-nanoparticle surface structures.

Original languageEnglish (US)
Pages (from-to)4661-4672
Number of pages12
JournalACS Applied Polymer Materials
Volume3
Issue number9
DOIs
StatePublished - Sep 10 2021

Keywords

  • pattern
  • phase separation
  • photopolymerization
  • polymer composite
  • superhydrophobicity

ASJC Scopus subject areas

  • Polymers and Plastics
  • Process Chemistry and Technology
  • Organic Chemistry

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