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Regulated phase separation in nanopatterned protein-polysaccharide thin films by spin coating
Russell A Banta1, Timothy W Collins1, Ricky Curley1
1School of Chemistry, University College Cork, Cork, Ireland; Environmental Research Institute, Lee Road, University College Cork, Cork, Ireland; AMBER@CRANN, Trinity College Dublin, Dublin 2, Ireland.
Colloids and Surfaces. B, Biointerfaces
|March 22, 2020
Summary
Researchers developed a sustainable method for creating patterned biopolymer films. This technique allows for selective metal incorporation, offering an eco-friendly alternative to traditional petrochemical polymers for various applications.
Area of Science:
- Materials Science
- Biotechnology
- Sustainable Polymers
Background:
- Traditional patterned films rely on non-renewable petrochemical polymers and harsh etching methods.
- These processes are costly to the environment and resource-intensive.
- Biopolymers present a sustainable, cost-effective, and easily integrated alternative.
Purpose of the Study:
- To develop a simple method for producing patterned biopolymer surfaces.
- To enable selective metal incorporation into distinct biopolymer domains.
- To demonstrate a sustainable alternative to conventional polymer patterning.
Main Methods:
- Utilized a blend of protein and polysaccharide biopolymers.
- Employed selective etching and metal incorporation for domain identification and functionalization.
- Investigated the influence of protein-polysaccharide ratio, viscosity, casting method, and spin speed on film morphology.
Main Results:
- Achieved patterned biopolymer films with morphologies (salami, continuous, porous, droplet-matrix) similar to synthetic polymers.
- Demonstrated selective identification and metal incorporation of protein and polysaccharide domains.
- Controlled feature diameters from 200 nm to 20 μm by tuning processing parameters.
Conclusions:
- The developed method offers a viable, sustainable alternative for patterning surfaces using biopolymer blends.
- Film morphology is tuneable, allowing for diverse applications.
- This work represents a significant advancement in biopolymer-based functional materials.
