Semicrystalline polyamide engineering thermoplastics based on the renewable monomer, 1,9-nonane diamine [electronic resource] : Thermal properties and water absorption
- Washington, D.C. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy, 2012.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- pages 1,266-1,274 : digital, PDF file
- Additional Creators:
- United States. Department of Energy. Office of Energy Efficiency and Renewable Energy
United States. Department of Energy. Office of Scientific and Technical Information
- Here, a series of poly(1,9-nonamethylene adipamide-co-1,9-nonamethylene terephthalamide) copolymers were produced using melt polymerization and the thermal properties, crystal structure, and moisture uptake characterized. The results confirmed that the copolymers exhibit isomorphism. As expected, glass transition temperature and the apparent melting temperature increased with increasing terephthalmide content. Using the difference in the apparent melting temperature to the crystallization temperature as a measure of relative crystallization rate, it was observed that crystallization rate decreased as the terephthalamide content of the copolymer was increased from 0 to 50 mole percent but then sharply increased when increased beyond 50 mole percent. This behavior may be the result of extensive inter- and intramolecular interactions in the melt associated with terephthalmide units in the polymer chain that nucleate crystallization upon cooling below the equilibrium melting temperature. Comparing the thermal properties of copolymers possessing an excess of terephthalmide units to the commodity polyamide Nylon 6,6, it is believed that these copolymers may have utility as partially renewable engineering thermoplastics.
- Published through SciTech Connect.
Polymer-Plastics Technology and Engineering 51 12 ISSN 0360-2559 AM
Alex Kugel; Jie He; Satyabrata Samanta; James Bahr; Jessica L. Lattimer; Michael A. Fuqua; Chad A. Ulven; Bret J. Chisholm.
North Dakota State Univ., Fargo, ND (United States)
- Funding Information:
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