Bio-based fats and oils were used as feedstocks for difunctional monomers utilized in melt polyamidation. In addition thiolene based click chemistry was applied in chain extension to prepare difuctional monomers with up to 32 carbons [1]. The synthesized bio-based polyamides displayed number average molecular weights up to 55,000 g/mol. This class of polymers exhibited an impressive property profile, polyolefin-like impact strength, tear strength, high elasticity, very low water absorption and yet high oxygen- and water vapor permeability. The technical advantages of these polymers encourage further development of composite materials with various fibers. Heat deflection temperatures were above room temperature (45–55 °C), while melting temperatures ranged from 121 to 200 °C [2]. Relatively low melting temperatures of these bio-polyamides enable favorable compounding with some sensitive bio-based fillers and fibers. Thus, bio-based composites were prepared by unifying the bio-based polyamides with pulp fibers, nano-crystalline cellulose and lignin. The key role of interfacial compatibilization will be discussed. Favorable rheological properties of the synthetized bio-based polyamides enable the use of advanced processing technologies like additive manufacturing.<br/>

Renewable fats and oils based long chain polyamides

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.