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Kinetics of the solid‐state polymerization of nylon‐6
Author(s) -
Xie JianJun
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10341
Subject(s) - prepolymer , polymerization , kinetics , polymer chemistry , particle size , materials science , volumetric flow rate , nylon 6 , particle (ecology) , chemical engineering , chemistry , polymer , composite material , thermodynamics , polyurethane , geology , physics , oceanography , quantum mechanics , engineering
The kinetics of the thermally induced solid‐state polymerization (SSP) of nylon‐6 were examined in both a fixed‐bed reactor and a rotary reactor. Factors such as the regulator content, the reaction temperature and time, the particle size, the type and geometry of the nylon‐6 prepolymer, the nitrogen gas flow rate, the water content of the nitrogen gas flow, and the polymerization process were studied. The results showed that the regulator content, the reaction temperature and time, and the particle size were the primary factors, and that the others were negligible. Moreover, the SSP rate and number‐average molecular weight ( M n ) increased with increasing reaction temperature and time and decreasing particle size. The SSP rate and M n had maximum values with increasing regulator content in an experimental range of 0.03–0.07 wt %. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 616–621, 2002; DOI 10.1002/app.10341