ISSN:
0360-6376
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Polyamides from n-alkylmalonic acids and linear aliphatic diamines, with paraffinic side chains of 3-18 carbon atoms, were prepared by melt polycondensation or by low-temperature interfacial polycondensation and were characterized by infrared, differential scanning calorimetry (DSC), and x-ray diffraction techniques. First-order transitions were found in the range of 130-210°C, depending on the number of carbon atoms in the side chain. The x-ray diffraction indicated substantially amorphous systems for polyamides with 8-18 carbon atoms in the side chain. However, long-range order arises in these polymers from a solid-state structure in which polyamide and hydrocarbon layers having partially disordered chain conformations alternate.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1975.170130507
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