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Crystalline transition in Nylon 10 10
Author(s) -
Li Yongjin,
Yan Deyue,
Zhu Xinyuan
Publication year - 2000
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20001201)21:18<1282::aid-marc1282>3.0.co;2-x
Subject(s) - nylon 6 , phase transition , nylon 66 , materials science , phase (matter) , transition temperature , diffraction , glass transition , crystallography , polymer chemistry , analytical chemistry (journal) , composite material , polymer , chemistry , polyamide , organic chemistry , thermodynamics , condensed matter physics , optics , physics , superconductivity
Variable‐temperature X‐ray diffraction was used to monitor the crystalline transition of Nylon 10 10. It could be found that the α‐phase of the sample transforms into a γ‐phase at about 135°C, if the sample is heated from room temperature to a high temperature, which is the so‐called Brill transition of Nylon 10 10. In addition, Nylon 10 10 was found to crystallize directly in a kind of α‐phase from the melt at high temperature, which is much different from the behavior of Nylon 66 and Nylon 10 12. Upon further cooling to room temperature, Nylon 10 10 preserved the α‐phase revealing two peaks in its XRD patterns. However, if the Nylon 10 10 sample with γ‐form was not melted, but immediately cooled from a temperature between T B and T m , the reverse transition from γ‐form to α‐form could be observed at about 130°C, indicating reversible Brill transition of Nylon 10 10.