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Related Concept Videos

Bioplastics01:27

Bioplastics

69
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
69

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Related Experiment Video

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Microfabricated Platforms for Mechanically Dynamic Cell Culture
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Engineering frog-skin-inspired wrinkled self-lubricative liquid-like interfaces on biodegradable plastics.

Mehran Ghasemlou1, Callum Stewart2, Moon Paul2

  • 1Centre for Sustainable Bioproducts, Deakin University, Geelong, Waurn Ponds Campus, VIC 3216, Australia; School of Science, STEM College, RMIT University, Melbourne, VIC 3001, Australia; School of Life and Environmental Sciences, Deakin University, Geelong Waurn Ponds Campus, VIC 3216, Australia.

Journal of Colloid and Interface Science
|January 3, 2026
PubMed
Summary

Researchers developed a fluorine-free slippery coating inspired by frog skin. This biomimetic surface effectively repels sticky liquids and delays ice formation, offering a versatile solution for various applications.

Keywords:
BioplasticsLubricated surfacesPolydimethylsiloxaneSelf-lubricativeSlippery surfacesSurface engineering

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Area of Science:

  • Colloid and interface science
  • Materials science
  • Biomimetics

Background:

  • Controlling liquid-solid interactions is crucial in engineering.
  • Biomimetic surfaces offer ultra-low adhesion to fluids.
  • Fluorine-free slippery coatings with oil-storing capabilities are challenging to fabricate without complex micro-texturing.

Purpose of the Study:

  • To engineer a multifunctional, self-lubricative interface inspired by frog skin.
  • To develop a fluorine-free slippery coating with robust oil-storing capability.
  • To achieve super-lubricity through synergistic effects of surface engineering and lubricant confinement.

Main Methods:

  • Simultaneous physical and chemical conjugation of vinyl-terminated polydimethylsiloxane (PDMS) with silicone oil on starch-based bioplastics.
  • Fabrication of random micro-sized structured wrinkles and nanochannels.
  • Utilizing a facile, cost-effective, and scalable process.

Main Results:

  • The oil-bearing coating demonstrated super-lubricity, readily sliding water and other low-surface-tension liquids.
  • The surface resisted adhesion of viscous fluids like honey and ketchup.
  • Ice formation was delayed by up to 240 seconds, and optical transparency exceeded 80%.

Conclusions:

  • A simple, low-cost, universal, and non-fluorinated strategy was developed for robust, patterned slippery coatings.
  • The engineered surface exhibits liquid-like characteristics suitable for food-contact applications.
  • Synergistic lubrication effects from PDMS and silicone oil ensure strong integration and super-lubricity.