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Ordnungszustände im system polyamid‐6 und polyamid‐6, 6
Author(s) -
Keil Wolfgang,
Trafara Gundolf
Publication year - 1986
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19860050121
Subject(s) - crystallite , annealing (glass) , crystallization , materials science , quenching (fluorescence) , crystallography , hydrogen bond , chemistry , composite material , molecule , organic chemistry , fluorescence , physics , quantum mechanics
Abstract Blends of PA‐6 and PA‐6,6 were studied by DSC for different conditions of crystallization. All samples were characterized by x‐ray diffraction. From dilute solution the components crystallize in separate modifications. In the melt both components are compatible. PA‐6‐ and PA‐6,6‐segments are linked together. During rapid quenching of the melt in the samples of about equal composition of PA‐6 and PA‐6,6 a modification is formed possibly built by a three‐dimensional network of hydrogen bonds between PA‐6‐ and PA‐6,6‐segments. If the samples of the same composition are annealed at 25 K below the melting temperatures of PA‐6 and PA‐6,6 for 3 hours in each case a modification appears as in quenched samples in addition to only partially ordered crystallites of PA‐6 and PA‐6,6. Despite optimal annealing there is no complete separation of the components.