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Related Concept Videos

Bioplastics01:27

Bioplastics

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...

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Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures
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Nanostructured biodegradable polymer networks using lyotropic liquid crystalline templates.

Jason D Clapper1, Stephanie L Iverson, C Allan Guymon

  • 1Chemical and Biochemical Engineering, The University of Iowa, Iowa City, IA 52242, USA.

Biomacromolecules
|June 15, 2007
PubMed
Summary

Lyotropic liquid crystals templated the formation of biodegradable hydrogels, enhancing polymerization rates and material properties. This nanotechnology approach controls porosity and degradation for advanced biomaterials in tissue engineering.

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A Facile and Eco-friendly Route to Fabricate Poly(Lactic Acid) Scaffolds with Graded Pore Size
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A Facile and Eco-friendly Route to Fabricate Poly(Lactic Acid) Scaffolds with Graded Pore Size

Published on: October 17, 2016

Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Polymer Chemistry

Background:

  • Synthetic biodegradable hydrogels are critical for tissue engineering.
  • Controlling physical properties, porosity, and physiological behavior is essential.
  • Nanotechnology offers precise control over biomaterial network structures.

Purpose of the Study:

  • To utilize nanotechnology for enhanced hydrogel design.
  • To employ a lyotropic liquid crystal (LLC) as a polymerization template.
  • To investigate the impact of LLC-templated nanostructure on biodegradable polymer properties.

Main Methods:

  • Formation of a photopolymerizable poly(lactic acid)-block-poly(ethylene glycol)-block-poly(lactic acid) (PLA-b-PEG-b-PLA) material.
  • Using LLCs to template the lamellar morphology of the polymer.
  • Comparing polymerization kinetics and hydrogel properties with isotropic formulations.

Main Results:

  • A 2-fold increase in maximum polymerization rate and 30% higher double bond conversion.
  • An 80% increase in network swelling and 230% increase in diffusivity.
  • LLC templating significantly influenced porosity, permeability, and degradation rates.

Conclusions:

  • LLC-directed network structure offers control over hydrogel porosity and physical properties.
  • This method enhances biomaterial design without altering inherent chemistry or biocompatibility.
  • The approach is advantageous for developing synthetic biomaterials for medical applications.