Isothermal crystallization of poly(ether ether ketone) with different molecular weights over a wide temperature range

Jiho Seo; Anne M. Gohn; Olivia Dubin; Hideaki Takahashi; Hirokazu Hasegawa; Ruri Sato; Alicyn M. Rhoades; Richard P. Schaake; Ralph H. Colby

doi:10.1002/pcr2.10055

Isothermal crystallization of poly(ether ether ketone) with different molecular weights over a wide temperature range

Jiho Seo, Anne M. Gohn, Olivia Dubin, Hideaki Takahashi, Hirokazu Hasegawa, Ruri Sato, Alicyn M. Rhoades, Richard P. Schaake, Ralph H. Colby

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

44 Scopus citations

Abstract

A systematic investigation to determine the importance of molecular weight on the isothermal crystallization kinetics of PEEK across a broad temperature range is presented for three commercial PEEKs (Victrex 150G, 450G, and 650G). The Avrami crystallization model is fit to the isothermal crystallization kinetics of PEEK as a function of crystallization time. To describe the secondary crystallization kinetics, a modified Avrami model is suggested by introducing a second Avrami exponent. The primary and secondary Avrami exponents of PEEK are 3.3 ± 0.4 and 2.3 ± 0.3. Using both standard differential scanning calorimetry (DSC) and fast scanning chip calorimetry (FSC), isothermal PEEK crystallization kinetics are investigated in a wide range of crystallization temperatures (158°C < T_c < 336°C). As the molecular weight is increased, the crystallization kinetics decrease. The crystallization half-times from DSC and FSC are well described by the Hoffman-Lauritzen model over the entire range of possible crystallization temperatures.

Original language	English (US)
Article number	e10055
Journal	Polymer Crystallization
Volume	2
Issue number	1
DOIs	https://doi.org/10.1002/pcr2.10055
State	Published - Feb 2019

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Polymers and Plastics
Physical and Theoretical Chemistry
Materials Science (miscellaneous)

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10.1002/pcr2.10055

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title = "Isothermal crystallization of poly(ether ether ketone) with different molecular weights over a wide temperature range",

abstract = "A systematic investigation to determine the importance of molecular weight on the isothermal crystallization kinetics of PEEK across a broad temperature range is presented for three commercial PEEKs (Victrex 150G, 450G, and 650G). The Avrami crystallization model is fit to the isothermal crystallization kinetics of PEEK as a function of crystallization time. To describe the secondary crystallization kinetics, a modified Avrami model is suggested by introducing a second Avrami exponent. The primary and secondary Avrami exponents of PEEK are 3.3 ± 0.4 and 2.3 ± 0.3. Using both standard differential scanning calorimetry (DSC) and fast scanning chip calorimetry (FSC), isothermal PEEK crystallization kinetics are investigated in a wide range of crystallization temperatures (158°C < Tc < 336°C). As the molecular weight is increased, the crystallization kinetics decrease. The crystallization half-times from DSC and FSC are well described by the Hoffman-Lauritzen model over the entire range of possible crystallization temperatures.",

author = "Jiho Seo and Gohn, {Anne M.} and Olivia Dubin and Hideaki Takahashi and Hirokazu Hasegawa and Ruri Sato and Rhoades, {Alicyn M.} and Schaake, {Richard P.} and Colby, {Ralph H.}",

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doi = "10.1002/pcr2.10055",

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AU - Seo, Jiho

AU - Gohn, Anne M.

AU - Dubin, Olivia

AU - Takahashi, Hideaki

AU - Hasegawa, Hirokazu

AU - Sato, Ruri

AU - Rhoades, Alicyn M.

AU - Schaake, Richard P.

AU - Colby, Ralph H.

PY - 2019/2

Y1 - 2019/2

N2 - A systematic investigation to determine the importance of molecular weight on the isothermal crystallization kinetics of PEEK across a broad temperature range is presented for three commercial PEEKs (Victrex 150G, 450G, and 650G). The Avrami crystallization model is fit to the isothermal crystallization kinetics of PEEK as a function of crystallization time. To describe the secondary crystallization kinetics, a modified Avrami model is suggested by introducing a second Avrami exponent. The primary and secondary Avrami exponents of PEEK are 3.3 ± 0.4 and 2.3 ± 0.3. Using both standard differential scanning calorimetry (DSC) and fast scanning chip calorimetry (FSC), isothermal PEEK crystallization kinetics are investigated in a wide range of crystallization temperatures (158°C < Tc < 336°C). As the molecular weight is increased, the crystallization kinetics decrease. The crystallization half-times from DSC and FSC are well described by the Hoffman-Lauritzen model over the entire range of possible crystallization temperatures.

AB - A systematic investigation to determine the importance of molecular weight on the isothermal crystallization kinetics of PEEK across a broad temperature range is presented for three commercial PEEKs (Victrex 150G, 450G, and 650G). The Avrami crystallization model is fit to the isothermal crystallization kinetics of PEEK as a function of crystallization time. To describe the secondary crystallization kinetics, a modified Avrami model is suggested by introducing a second Avrami exponent. The primary and secondary Avrami exponents of PEEK are 3.3 ± 0.4 and 2.3 ± 0.3. Using both standard differential scanning calorimetry (DSC) and fast scanning chip calorimetry (FSC), isothermal PEEK crystallization kinetics are investigated in a wide range of crystallization temperatures (158°C < Tc < 336°C). As the molecular weight is increased, the crystallization kinetics decrease. The crystallization half-times from DSC and FSC are well described by the Hoffman-Lauritzen model over the entire range of possible crystallization temperatures.

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ER -

Isothermal crystallization of poly(ether ether ketone) with different molecular weights over a wide temperature range

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