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Isothermal crystallization kinetics of high‐flow nylon 6 by differential scanning calorimetry

The isothermal crystallization kinetics have been investigated with differential scanning calorimetry for high‐flow nylon 6, which was prepared with the mother salt of polyamidoamine dendrimers and ‐phthalic acid, an end‐capping agent, and ε‐caprolactam by polymerization. The Avrami equation has bee... Full description

Journal Title: Journal of Applied Polymer Science 15 March 2009, Vol.111(6), pp.2930-2937
Main Author: Zhang, Fan
Other Authors: Zhou, Li , Xiong, Yuanqin , Liu, Guangpeng , Xu, Weijian
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0021-8995 ; E-ISSN: 1097-4628 ; DOI: 10.1002/app.29352
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recordid: wj10.1002/app.29352
title: Isothermal crystallization kinetics of high‐flow nylon 6 by differential scanning calorimetry
format: Article
creator:
  • Zhang, Fan
  • Zhou, Li
  • Xiong, Yuanqin
  • Liu, Guangpeng
  • Xu, Weijian
subjects:
  • Crystallization
  • Differential Scanning Calorimetry Dsc
  • Kinetics Polym.
ispartof: Journal of Applied Polymer Science, 15 March 2009, Vol.111(6), pp.2930-2937
description: The isothermal crystallization kinetics have been investigated with differential scanning calorimetry for high‐flow nylon 6, which was prepared with the mother salt of polyamidoamine dendrimers and ‐phthalic acid, an end‐capping agent, and ε‐caprolactam by polymerization. The Avrami equation has been adopted to study the crystallization kinetics. In comparison with pure nylon 6, the high‐flow nylon 6 has a lower crystallization rate, which varies with the generation and content of polyamidoamine units in the nylon 6 matrix. The traditional analysis indicates that the values of the Avrami parameters calculated from the half‐time of crystallization might be more in agreement with the actual crystallization mechanism than the parameters determined from the Avrami plots. The Avrami exponents of the high‐flow nylon 6 range from 2.1 to 2.4, and this means that the crystallization of the high‐flow nylon 6 is a two‐dimensional growth process. The activation energies of the high‐flow nylon 6, which were determined by the Arrhenius method, range from −293 to −382 kJ/mol. The activation energies decrease with the increase in the generation of polyamidoamine units but increase with the increase in the content of polyamidoamine units in the nylon 6 matrix. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
language: eng
source:
identifier: ISSN: 0021-8995 ; E-ISSN: 1097-4628 ; DOI: 10.1002/app.29352
fulltext: fulltext
issn:
  • 0021-8995
  • 00218995
  • 1097-4628
  • 10974628
url: Link


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titleIsothermal crystallization kinetics of high‐flow nylon 6 by differential scanning calorimetry
creatorZhang, Fan ; Zhou, Li ; Xiong, Yuanqin ; Liu, Guangpeng ; Xu, Weijian
ispartofJournal of Applied Polymer Science, 15 March 2009, Vol.111(6), pp.2930-2937
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subjectCrystallization ; Differential Scanning Calorimetry Dsc ; Kinetics Polym.
descriptionThe isothermal crystallization kinetics have been investigated with differential scanning calorimetry for high‐flow nylon 6, which was prepared with the mother salt of polyamidoamine dendrimers and ‐phthalic acid, an end‐capping agent, and ε‐caprolactam by polymerization. The Avrami equation has been adopted to study the crystallization kinetics. In comparison with pure nylon 6, the high‐flow nylon 6 has a lower crystallization rate, which varies with the generation and content of polyamidoamine units in the nylon 6 matrix. The traditional analysis indicates that the values of the Avrami parameters calculated from the half‐time of crystallization might be more in agreement with the actual crystallization mechanism than the parameters determined from the Avrami plots. The Avrami exponents of the high‐flow nylon 6 range from 2.1 to 2.4, and this means that the crystallization of the high‐flow nylon 6 is a two‐dimensional growth process. The activation energies of the high‐flow nylon 6, which were determined by the Arrhenius method, range from −293 to −382 kJ/mol. The activation energies decrease with the increase in the generation of polyamidoamine units but increase with the increase in the content of polyamidoamine units in the nylon 6 matrix. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
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titleIsothermal crystallization kinetics of high‐flow nylon 6 by differential scanning calorimetry
descriptionThe isothermal crystallization kinetics have been investigated with differential scanning calorimetry for high‐flow nylon 6, which was prepared with the mother salt of polyamidoamine dendrimers and ‐phthalic acid, an end‐capping agent, and ε‐caprolactam by polymerization. The Avrami equation has been adopted to study the crystallization kinetics. In comparison with pure nylon 6, the high‐flow nylon 6 has a lower crystallization rate, which varies with the generation and content of polyamidoamine units in the nylon 6 matrix. The traditional analysis indicates that the values of the Avrami parameters calculated from the half‐time of crystallization might be more in agreement with the actual crystallization mechanism than the parameters determined from the Avrami plots. The Avrami exponents of the high‐flow nylon 6 range from 2.1 to 2.4, and this means that the crystallization of the high‐flow nylon 6 is a two‐dimensional growth process. The activation energies of the high‐flow nylon 6, which were determined by the Arrhenius method, range from −293 to −382 kJ/mol. The activation energies decrease with the increase in the generation of polyamidoamine units but increase with the increase in the content of polyamidoamine units in the nylon 6 matrix. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
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abstractThe isothermal crystallization kinetics have been investigated with differential scanning calorimetry for high‐flow nylon 6, which was prepared with the mother salt of polyamidoamine dendrimers and ‐phthalic acid, an end‐capping agent, and ε‐caprolactam by polymerization. The Avrami equation has been adopted to study the crystallization kinetics. In comparison with pure nylon 6, the high‐flow nylon 6 has a lower crystallization rate, which varies with the generation and content of polyamidoamine units in the nylon 6 matrix. The traditional analysis indicates that the values of the Avrami parameters calculated from the half‐time of crystallization might be more in agreement with the actual crystallization mechanism than the parameters determined from the Avrami plots. The Avrami exponents of the high‐flow nylon 6 range from 2.1 to 2.4, and this means that the crystallization of the high‐flow nylon 6 is a two‐dimensional growth process. The activation energies of the high‐flow nylon 6, which were determined by the Arrhenius method, range from −293 to −382 kJ/mol. The activation energies decrease with the increase in the generation of polyamidoamine units but increase with the increase in the content of polyamidoamine units in the nylon 6 matrix. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
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doi10.1002/app.29352
pages2930-2937
date2009-03-15