Abstract

AbstractSummary: 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.magnified imageDSC heating and cooling thermograms for nylons 6 u18 and 18 u18.

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