Modeling of non-isothermal crystallization kinetics of isotactic polypropylene

Y. Mubarak; E. M.A. Harkin-Jones; P. J. Martin; M. Ahmad

doi:10.1016/S0032-3861(00)00606-6

Modeling of non-isothermal crystallization kinetics of isotactic polypropylene

Y. Mubarak, E. M.A. Harkin-Jones, P. J. Martin, M. Ahmad

Research output: Contribution to journal › Article › peer-review

101 Citations (Scopus)

Abstract

Isothermal and non-isothermal melt crystallization kinetics of isotactic polypropylene (iPP) were investigated via differential scanning calorimetry (DSC). Isothermal melt crystallization kinetics were analyzed using the Avrami equation. An Avrami exponent close to three was obtained for iPP, which implies growth of three-dimensional spherulitic superstructures following heterogeneous nucleation. Non-isothermal crystallization kinetics data obtained from DSC in conjunction with a non-linear regression method were employed to estimate the kinetic parameters of mathematical models describing the non-isothermal crystallization of iPP. The results suggest that the available mathematical models are not successful in describing the non-isothermal crystallization of iPP over a wide range of cooling rates. It was found that the non-isothermal crystallization kinetics of iPP, over a wide range of cooling rates, could best be described by modifying the Ozawa model to include induction times.

Original language	English
Pages (from-to)	3171-3182
Number of pages	12
Journal	Polymer
Volume	42
Issue number	7
DOIs	https://doi.org/10.1016/S0032-3861(00)00606-6
Publication status	Published (in print/issue) - 1 Jan 2001

Keywords

Differential scanning calorimetry
Non-isothermal crystallization kinetics
Polypropylene

Access to Document

10.1016/S0032-3861(00)00606-6

Cite this

@article{10e518e2806a4883927ae17c7a88b597,

title = "Modeling of non-isothermal crystallization kinetics of isotactic polypropylene",

abstract = "Isothermal and non-isothermal melt crystallization kinetics of isotactic polypropylene (iPP) were investigated via differential scanning calorimetry (DSC). Isothermal melt crystallization kinetics were analyzed using the Avrami equation. An Avrami exponent close to three was obtained for iPP, which implies growth of three-dimensional spherulitic superstructures following heterogeneous nucleation. Non-isothermal crystallization kinetics data obtained from DSC in conjunction with a non-linear regression method were employed to estimate the kinetic parameters of mathematical models describing the non-isothermal crystallization of iPP. The results suggest that the available mathematical models are not successful in describing the non-isothermal crystallization of iPP over a wide range of cooling rates. It was found that the non-isothermal crystallization kinetics of iPP, over a wide range of cooling rates, could best be described by modifying the Ozawa model to include induction times.",

keywords = "Differential scanning calorimetry, Non-isothermal crystallization kinetics, Polypropylene",

author = "Y. Mubarak and Harkin-Jones, {E. M.A.} and Martin, {P. J.} and M. Ahmad",

year = "2001",

month = jan,

day = "1",

doi = "10.1016/S0032-3861(00)00606-6",

language = "English",

volume = "42",

pages = "3171--3182",

journal = "Polymer",

issn = "0032-3861",

publisher = "Elsevier",

number = "7",

}

TY - JOUR

T1 - Modeling of non-isothermal crystallization kinetics of isotactic polypropylene

AU - Mubarak, Y.

AU - Harkin-Jones, E. M.A.

AU - Martin, P. J.

AU - Ahmad, M.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Isothermal and non-isothermal melt crystallization kinetics of isotactic polypropylene (iPP) were investigated via differential scanning calorimetry (DSC). Isothermal melt crystallization kinetics were analyzed using the Avrami equation. An Avrami exponent close to three was obtained for iPP, which implies growth of three-dimensional spherulitic superstructures following heterogeneous nucleation. Non-isothermal crystallization kinetics data obtained from DSC in conjunction with a non-linear regression method were employed to estimate the kinetic parameters of mathematical models describing the non-isothermal crystallization of iPP. The results suggest that the available mathematical models are not successful in describing the non-isothermal crystallization of iPP over a wide range of cooling rates. It was found that the non-isothermal crystallization kinetics of iPP, over a wide range of cooling rates, could best be described by modifying the Ozawa model to include induction times.

AB - Isothermal and non-isothermal melt crystallization kinetics of isotactic polypropylene (iPP) were investigated via differential scanning calorimetry (DSC). Isothermal melt crystallization kinetics were analyzed using the Avrami equation. An Avrami exponent close to three was obtained for iPP, which implies growth of three-dimensional spherulitic superstructures following heterogeneous nucleation. Non-isothermal crystallization kinetics data obtained from DSC in conjunction with a non-linear regression method were employed to estimate the kinetic parameters of mathematical models describing the non-isothermal crystallization of iPP. The results suggest that the available mathematical models are not successful in describing the non-isothermal crystallization of iPP over a wide range of cooling rates. It was found that the non-isothermal crystallization kinetics of iPP, over a wide range of cooling rates, could best be described by modifying the Ozawa model to include induction times.

KW - Differential scanning calorimetry

KW - Non-isothermal crystallization kinetics

KW - Polypropylene

UR - http://www.scopus.com/inward/record.url?scp=0035138165&partnerID=8YFLogxK

U2 - 10.1016/S0032-3861(00)00606-6

DO - 10.1016/S0032-3861(00)00606-6

M3 - Article

AN - SCOPUS:0035138165

SN - 0032-3861

VL - 42

SP - 3171

EP - 3182

JO - Polymer

JF - Polymer

IS - 7

ER -

Modeling of non-isothermal crystallization kinetics of isotactic polypropylene

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this