Premium
Linear Unsaturated Polyamides: Nylons 6 u18 and 18 u18
Author(s) -
Bennett Carl,
Mathias Lon J.
Publication year - 2004
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200400351
Subject(s) - amide , polyamide , crystallization , materials science , polymer chemistry , thermal stability , chemistry , organic chemistry
Summary: Linear unsaturated nylons 6 u18 and 18 u18 have been made containing a double bond in the center of the diacid segment with potential for additional functionalization. Solution state NMR showed the presence of a small portion of cis amide units. Solid state NMR verified the presence of the double bond in the bulk, and that the polyamides were present in the α ‐crystalline form. Thermal stability was comparable to linear saturated nylons, and the melting and crystallization temperatures of the unsaturated nylons were lower compared to the saturated analogs.DSC heating and cooling thermograms for nylons 6 u18 and 18 u18.