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Title: Semicrystalline polyamide engineering thermoplastics based on the renewable monomer, 1,9-nonane diamine: Thermal properties and water absorption

Journal Article · · Polymer-Plastics Technology and Engineering
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  1. North Dakota State Univ., Fargo, ND (United States)
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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.

Research Organization:
North Dakota State Univ., Fargo, ND (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
FG36-08GO88160
OSTI ID:
1053189
Report Number(s):
DOE/GO/88160-47
Journal Information:
Polymer-Plastics Technology and Engineering, Vol. 51, Issue 12; ISSN 0360-2559
Publisher:
Taylor & FrancisCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

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Cited By (3)

Poly(decamethylene terephthalamide) copolymerized with long-chain alkyl dodecanedioic acid: Toward bio-based polymer and improved performances: Research Article journal April 2018
Structure and properties of bio‐based polyamide 109 treated with superheated water journal May 2019
Preparation and properties of biobased polyamides based on 1,9-azelaic acid and different chain length diamines journal April 2019

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Related Subjects

36 MATERIALS SCIENCE
1
9-nonane diamine
nylon
polyamide
poly(1
9-nonamethylene adipamide-co-1
9-nonamethylene terephthalamide)
renewable polymer
semicrystalline polyamide