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Types of Step-Growth Polymers: Polyesters01:20

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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
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Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
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Poly(cannabinoid)s: Hemp-Derived Biocompatible Thermoplastic Polyesters with Inherent Antioxidant Properties.

Robert Daniels1, Erick Orozco Morato2,3, Omer A Yassin1

  • 1Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States.

ACS Applied Materials & Interfaces
|September 16, 2022
PubMed
Summary

Hemp-derived polymers like Poly(CBD-Adipate) offer a sustainable alternative. These novel polyesters show no cytotoxicity and possess antioxidant properties, making them suitable for various applications.

Keywords:
antioxidant materialscannabidiolmelt-processed polymerspolycannabinoidrenewable polymerswound healing

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Area of Science:

  • Polymer Chemistry
  • Biomaterials Science
  • Sustainable Materials

Background:

  • Hemp cultivation legalization has reduced hemp-derived cannabinoid prices.
  • Cannabidiol (CBD) and cannabigerol (CBG) are abundant, low-cost hemp compounds.
  • CBD's potential as a polymer feedstock is explored due to its availability and cost.

Purpose of the Study:

  • To synthesize polyesters from CBD and CBG with adipoyl chloride.
  • To characterize the thermal, mechanical, and biological properties of Poly(CBD-Adipate).
  • To evaluate Poly(CBD-Adipate) as a sustainable biomaterial.

Main Methods:

  • Polyester synthesis via condensation of CBD or CBG with adipoyl chloride.
  • Film casting of Poly(CBD-Adipate).
  • Thermal, mechanical, and cytotoxicity testing (using adipose-derived stem cells).
  • Comparison with poly(lactide) films.
  • Melt processing and material characterization.

Main Results:

  • Poly(CBD-Adipate) films demonstrated no cytotoxicity toward adipose-derived stem cells.
  • The material exhibited inherent antioxidant activity, outperforming poly(lactide).
  • Poly(CBD-Adipate) is semi-crystalline and melt-processable, as shown by plastic hemp leaf creation.

Conclusions:

  • CBD and CBG are viable monomers for synthesizing novel polyesters.
  • Poly(CBD-Adipate) presents a promising, biocompatible, and antioxidant biomaterial.
  • This research highlights the potential of hemp-derived compounds in sustainable polymer development.