Studies on crystallization kinetics of nylon 6-polyoxypropylene-nylon 6 copolymers

Jen Long Yeh, Jen Feng Kuo, Chuh-Yung Chen

Research output: Contribution to journalArticle

Abstract

The crystllization kinetics of anionic-prepared nylon6-poly(oxypropylene) 1000-nylon 6 (NPN) block copolymers containing 1.20 to 8.76 wt% poly(oxypropylene)(POP) were studied. The thermograms of isothermal and nonisothermal differential scanning calorimetry of NPN block copolymers obtained were used for the study. The Avrami equation was used to analyze the isothermal crystallization of NPN nylon block copolymers. The Avrami exponent n obtained in the temperature range of 180 to 200 °C was 2.0 to 2.5. It was not similar to that for nylon 6 reported in literature. The activation energies of crystallization for the nylon block copolymers were smaller than that of nylon 6, and showed a minimum with POP content. The equilibrium melting point increased as the POP content decreased. For the nylon block copolymers with lower POP content, the slopes of Tc vs. Tm plots were higher than the values reported elsewhere. The Ozawa plot was used to analyze the data of nonisothermal crystallization. The obvious curvature in the plot indicated that the Ozawa model could not fit our system well, and there was an abrupt change of the slope in the Ozawa plot at a critical cooling rate.

Original languageEnglish
Pages (from-to)81-89
Number of pages9
JournalJournal of Polymer Research
Volume4
Issue number2
DOIs
Publication statusPublished - 1997 Jan 1

Fingerprint

Crystallization kinetics
Block copolymers
Copolymers
Nylons
Crystallization
Melting point
Differential scanning calorimetry
Activation energy
polypropylene glycol
nylon 6
Cooling
Temperature

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cite this

@article{6c020376ff52471a949caea8122df758,
title = "Studies on crystallization kinetics of nylon 6-polyoxypropylene-nylon 6 copolymers",
abstract = "The crystllization kinetics of anionic-prepared nylon6-poly(oxypropylene) 1000-nylon 6 (NPN) block copolymers containing 1.20 to 8.76 wt{\%} poly(oxypropylene)(POP) were studied. The thermograms of isothermal and nonisothermal differential scanning calorimetry of NPN block copolymers obtained were used for the study. The Avrami equation was used to analyze the isothermal crystallization of NPN nylon block copolymers. The Avrami exponent n obtained in the temperature range of 180 to 200 °C was 2.0 to 2.5. It was not similar to that for nylon 6 reported in literature. The activation energies of crystallization for the nylon block copolymers were smaller than that of nylon 6, and showed a minimum with POP content. The equilibrium melting point increased as the POP content decreased. For the nylon block copolymers with lower POP content, the slopes of Tc vs. Tm plots were higher than the values reported elsewhere. The Ozawa plot was used to analyze the data of nonisothermal crystallization. The obvious curvature in the plot indicated that the Ozawa model could not fit our system well, and there was an abrupt change of the slope in the Ozawa plot at a critical cooling rate.",
author = "Yeh, {Jen Long} and Kuo, {Jen Feng} and Chuh-Yung Chen",
year = "1997",
month = "1",
day = "1",
doi = "10.1007/s10965-006-0011-5",
language = "English",
volume = "4",
pages = "81--89",
journal = "Journal of Polymer Research",
issn = "1022-9760",
publisher = "Springer Netherlands",
number = "2",

}

Studies on crystallization kinetics of nylon 6-polyoxypropylene-nylon 6 copolymers. / Yeh, Jen Long; Kuo, Jen Feng; Chen, Chuh-Yung.

In: Journal of Polymer Research, Vol. 4, No. 2, 01.01.1997, p. 81-89.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Studies on crystallization kinetics of nylon 6-polyoxypropylene-nylon 6 copolymers

AU - Yeh, Jen Long

AU - Kuo, Jen Feng

AU - Chen, Chuh-Yung

PY - 1997/1/1

Y1 - 1997/1/1

N2 - The crystllization kinetics of anionic-prepared nylon6-poly(oxypropylene) 1000-nylon 6 (NPN) block copolymers containing 1.20 to 8.76 wt% poly(oxypropylene)(POP) were studied. The thermograms of isothermal and nonisothermal differential scanning calorimetry of NPN block copolymers obtained were used for the study. The Avrami equation was used to analyze the isothermal crystallization of NPN nylon block copolymers. The Avrami exponent n obtained in the temperature range of 180 to 200 °C was 2.0 to 2.5. It was not similar to that for nylon 6 reported in literature. The activation energies of crystallization for the nylon block copolymers were smaller than that of nylon 6, and showed a minimum with POP content. The equilibrium melting point increased as the POP content decreased. For the nylon block copolymers with lower POP content, the slopes of Tc vs. Tm plots were higher than the values reported elsewhere. The Ozawa plot was used to analyze the data of nonisothermal crystallization. The obvious curvature in the plot indicated that the Ozawa model could not fit our system well, and there was an abrupt change of the slope in the Ozawa plot at a critical cooling rate.

AB - The crystllization kinetics of anionic-prepared nylon6-poly(oxypropylene) 1000-nylon 6 (NPN) block copolymers containing 1.20 to 8.76 wt% poly(oxypropylene)(POP) were studied. The thermograms of isothermal and nonisothermal differential scanning calorimetry of NPN block copolymers obtained were used for the study. The Avrami equation was used to analyze the isothermal crystallization of NPN nylon block copolymers. The Avrami exponent n obtained in the temperature range of 180 to 200 °C was 2.0 to 2.5. It was not similar to that for nylon 6 reported in literature. The activation energies of crystallization for the nylon block copolymers were smaller than that of nylon 6, and showed a minimum with POP content. The equilibrium melting point increased as the POP content decreased. For the nylon block copolymers with lower POP content, the slopes of Tc vs. Tm plots were higher than the values reported elsewhere. The Ozawa plot was used to analyze the data of nonisothermal crystallization. The obvious curvature in the plot indicated that the Ozawa model could not fit our system well, and there was an abrupt change of the slope in the Ozawa plot at a critical cooling rate.

UR - http://www.scopus.com/inward/record.url?scp=0031123053&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031123053&partnerID=8YFLogxK

U2 - 10.1007/s10965-006-0011-5

DO - 10.1007/s10965-006-0011-5

M3 - Article

VL - 4

SP - 81

EP - 89

JO - Journal of Polymer Research

JF - Journal of Polymer Research

SN - 1022-9760

IS - 2

ER -