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Shape Memory Polymers for Active Cell Culture
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Multifunctional Shape-Memory Polymer Foams with Bio-inspired Antimicrobials.

Mary Beth Browning Monroe1, Alexandra D Easley1, Katie Grant1

  • 1Department of Biomedical Engineering, Texas A&M University, 5045 Emerging Technologies Building, 3120 TAMU, College Station, TX, 77843-3120, USA.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry
|December 29, 2017
PubMed
Summary
This summary is machine-generated.

Researchers developed new shape-memory polymer (SMP) foams incorporating cinnamic acid for improved hemostasis. These antimicrobial foams show potential for advanced hemorrhage control in trauma care.

Keywords:
antibioticsphenolic acidpolymersshape memorysynthesis design

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Trauma Medicine

Background:

  • Uncontrolled bleeding remains a leading cause of trauma mortality despite available hemostatic agents.
  • Shape-memory polymer (SMP) foams offer promising properties for hemostasis, including shape recovery, biocompatibility, and rapid clotting.
  • There is a need for advanced hemostatic materials with enhanced functionalities.

Purpose of the Study:

  • To incorporate phenolic acids, specifically cinnamic acid (CA), into SMP foams as a monomer.
  • To evaluate the impact of CA incorporation on the structural, thermal, and shape-memory properties of SMP foams.
  • To assess the antimicrobial efficacy and cytocompatibility of the modified SMP foams.

Main Methods:

  • Cinnamic acid (CA) was used as a monomer during the synthesis of shape-memory polymer (SMP) foams.
  • Foam characterization included assessment of pore structure, thermal properties, and shape-memory behavior.
  • Antimicrobial activity against gram-positive and gram-negative bacteria was tested, alongside cytocompatibility evaluations.

Main Results:

  • SMP foams synthesized with CA exhibited comparable pore structures to unmodified foams.
  • The incorporation of CA allowed for tuning of thermal and shape-memory properties within clinically relevant ranges.
  • The modified foams demonstrated both initial and sustained antimicrobial effects against a range of bacteria while maintaining cytocompatibility.

Conclusions:

  • Multifunctional SMP foams incorporating cinnamic acid were successfully developed.
  • These novel hemostatic materials possess tunable properties and antimicrobial capabilities.
  • The developed foams show significant potential for improving hemorrhage treatment in trauma patients.