Redefining polyamide property profiles via renewable long-chain aliphatic segments: Towards impact resistance and low water absorption
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2018-12-01
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Language
en
Pages
10
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European Polymer Journal, Volume 109, pp. 16-25
Abstract
A series of renewable, long-chain, fatty acid-derived polyamides (PA) ranging from PA 6,14 to PA 6,18 were synthesized via polycondensation, yielding very high molecular weights and a remarkable property profile distinct from short-chain commercial grades. Most notably, synthesized polyamides exhibited good impact resistance, excellent stiffness-to-toughness balance and very low water absorption yet high oxygen and water vapour permeability; with this property profile being exemplified by PA 6,18. The increased repeating unit length and reduced number of amide linkages able to participate in interchain hydrogen bonding imparted a strong influence on material properties. The data highlights the benefits and technical advantages of utilising long-chain polyamides, while also significantly expanding the repertoire, knowledge and property profile of the long-chain aliphatic polyamide family, and providing a basis for further development of polyamides from renewable sources.Description
Keywords
Impact strength, Molecular weight, Polyamide, Renewable, Water absorption
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Citation
Nguyen, P H, Spoljaric, S & Seppälä, J 2018, ' Redefining polyamide property profiles via renewable long-chain aliphatic segments : Towards impact resistance and low water absorption ', European Polymer Journal, vol. 109, pp. 16-25 . https://doi.org/10.1016/j.eurpolymj.2018.08.057