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Kinetic studies of the crystallization of nylon‐6 block copolymers
Author(s) -
Limtasiri T.,
Grossman S. J.,
Huang J. C.
Publication year - 1989
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760290802
Subject(s) - crystallization , materials science , copolymer , nylon 6 , avrami equation , isothermal process , ethylene oxide , polymer chemistry , atmospheric temperature range , kinetics , thermodynamics , chemical engineering , melting point , composite material , polymer , enthalpy of fusion , physics , quantum mechanics , engineering
The crystallization kinetics of nylon‐6 and nylon‐6 block copolymers (NBC's) containing 1–3 mole % poly(ethylene oxide), PEO, were measured under isothermal and linear cooling conditions. The Avrami equation was used to fit the data. The range of the Avrami index n was from 1.5 to 2.2 for the system studied in the temperature range from 400–454 K. Maximum rate of crystallization was observed in the above temperature range. Nylon‐6 block copolymers showed the maximum crystallization rate at a lower temperature than nylon‐6. When the soft segment exceeded 3 mole %, no crystallization was observed. Cooling rate studies showed the same tendency. The crystallization rate behavior of nylon‐6 block copolymers was similar to the pure nylon.