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On the nature of junction zones in gelatin gels
Author(s) -
Mel'Nichenko Yu. B.,
Gomza Yu. P.,
Shilov V. V.,
Osipov S. I.
Publication year - 1991
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990250304
Subject(s) - gelatin , polymer , macromolecule , materials science , phase (matter) , matrix (chemical analysis) , quenching (fluorescence) , polymer chemistry , chemical engineering , optical rotation , chemistry , composite material , optics , fluorescence , organic chemistry , biochemistry , physics , engineering
The structural modifications and the phase state of the gelatin matrix during the sol‐gel transition and gelatin gel deswelling were studied by optical rotation and wide‐angle X‐ray scattering (WAXS) methods. It is shown that the quenching of a solution results in rapid renaturation of macromolecular fragments of gelatin and in collagen‐like structures forming junction zones in the polymer network. Microcrystallites in the polymer matrix of gelatin gels were not revealed which shows that the aggregation of renaturated helices and the formation of collagen‐like fibrillar crystals do not occur. However, the crystalline phase appears upon gel drying or its deswelling in a nonsolvent.