Influence of nucleating agents on crystallization of polypropylene - I. Talc as a nucleating agent

J. Menczel, J. Varga

Research output: Contribution to journalArticle

124 Citations (Scopus)

Abstract

The effect of talc as an artificial nucleating agent in different concentrations on the crystallization of polypropylene (PP) has been studied. It is considered that the induction time should be taken into account in the Avrami evaluation of isothermal crystallization. From a study of nucleated PP samples prepared in different ways, it has been proved that the nucleating effect of talc slightly decreases with increasing time spent by the sample in the state of the polymer melt. It has been shown that crystallization of non-nucleated polypropylene strongly depends on the material of the sample pan. It has been established that dilatometry cannot be used to study the isothermal crystallization of nucleated polypropylene, since microcracks appear in the sample, partly compensating the volume decrease due to the crystallization process.

Original languageEnglish
Pages (from-to)161-174
Number of pages14
JournalJournal of Thermal Analysis
Volume28
Issue number1
DOIs
Publication statusPublished - Sep 1983

Fingerprint

Talc
talc
Polypropylenes
Crystallization
polypropylene
crystallization
dilatometry
Polymer melts
microcracks
Microcracks
induction
evaluation
polymers

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Engineering(all)

Cite this

Influence of nucleating agents on crystallization of polypropylene - I. Talc as a nucleating agent. / Menczel, J.; Varga, J.

In: Journal of Thermal Analysis, Vol. 28, No. 1, 09.1983, p. 161-174.

Research output: Contribution to journalArticle

@article{cfb34a035fa14aa6b698243737b1efc7,
title = "Influence of nucleating agents on crystallization of polypropylene - I. Talc as a nucleating agent",
abstract = "The effect of talc as an artificial nucleating agent in different concentrations on the crystallization of polypropylene (PP) has been studied. It is considered that the induction time should be taken into account in the Avrami evaluation of isothermal crystallization. From a study of nucleated PP samples prepared in different ways, it has been proved that the nucleating effect of talc slightly decreases with increasing time spent by the sample in the state of the polymer melt. It has been shown that crystallization of non-nucleated polypropylene strongly depends on the material of the sample pan. It has been established that dilatometry cannot be used to study the isothermal crystallization of nucleated polypropylene, since microcracks appear in the sample, partly compensating the volume decrease due to the crystallization process.",
author = "J. Menczel and J. Varga",
year = "1983",
month = "9",
doi = "10.1007/BF02105288",
language = "English",
volume = "28",
pages = "161--174",
journal = "Journal of Thermal Analysis and Calorimetry",
issn = "1388-6150",
publisher = "Springer Netherlands",
number = "1",

}

TY - JOUR

T1 - Influence of nucleating agents on crystallization of polypropylene - I. Talc as a nucleating agent

AU - Menczel, J.

AU - Varga, J.

PY - 1983/9

Y1 - 1983/9

N2 - The effect of talc as an artificial nucleating agent in different concentrations on the crystallization of polypropylene (PP) has been studied. It is considered that the induction time should be taken into account in the Avrami evaluation of isothermal crystallization. From a study of nucleated PP samples prepared in different ways, it has been proved that the nucleating effect of talc slightly decreases with increasing time spent by the sample in the state of the polymer melt. It has been shown that crystallization of non-nucleated polypropylene strongly depends on the material of the sample pan. It has been established that dilatometry cannot be used to study the isothermal crystallization of nucleated polypropylene, since microcracks appear in the sample, partly compensating the volume decrease due to the crystallization process.

AB - The effect of talc as an artificial nucleating agent in different concentrations on the crystallization of polypropylene (PP) has been studied. It is considered that the induction time should be taken into account in the Avrami evaluation of isothermal crystallization. From a study of nucleated PP samples prepared in different ways, it has been proved that the nucleating effect of talc slightly decreases with increasing time spent by the sample in the state of the polymer melt. It has been shown that crystallization of non-nucleated polypropylene strongly depends on the material of the sample pan. It has been established that dilatometry cannot be used to study the isothermal crystallization of nucleated polypropylene, since microcracks appear in the sample, partly compensating the volume decrease due to the crystallization process.

UR - http://www.scopus.com/inward/record.url?scp=0020813508&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0020813508&partnerID=8YFLogxK

U2 - 10.1007/BF02105288

DO - 10.1007/BF02105288

M3 - Article

AN - SCOPUS:0020813508

VL - 28

SP - 161

EP - 174

JO - Journal of Thermal Analysis and Calorimetry

JF - Journal of Thermal Analysis and Calorimetry

SN - 1388-6150

IS - 1

ER -