Cross-linking of ethylene-octene copolymer (EOC) by dicumyl peroxide (DCP)

Petr Svoboda; Sameepa Poongavalappil; Rajesh Theravalappil; Dagmar Svobodova; Pavel Mokrejs; Karel Kolomaznik; Toshiaki Ougizawa; Takashi Inoue

doi:10.1002/app.33655

Cross-linking of ethylene-octene copolymer (EOC) by dicumyl peroxide (DCP)

Petr Svoboda^*, Sameepa Poongavalappil, Rajesh Theravalappil, Dagmar Svobodova, Pavel Mokrejs, Karel Kolomaznik, Toshiaki Ougizawa, Takashi Inoue

^*Corresponding author for this work

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

17 Scopus citations

Abstract

Ethylene-octene copolymer (EOC) was crosslinked by dicumyl peroxide (DCP) at various temperatures (150-200°C). Six concentrations of DCP in range 0.2-0.7 wt % were investigated. cross-linking was studied by rubber process analyzer (RPA) and by differential scanning calorimetry (DSC). From RPA data analysis real part modulus s', tan δ, and reaction rate were investigated as a function of peroxide content and temperature. The highest s'_max and the lowest tan δ were found for 0.7% of DCP at 150°C. Chain scission was analyzed by slope analysis of conversion ratio, X in times after reaching the maximum. Less susceptible to chain scission are temperatures in range 150-170°C and peroxide levels 0.2-0.5%. Heat of reaction was analyzed by DSC at various heating rates (5-40°C min^-1). It was found to be exothermic. By projection to zero heating rate, the reaction was found to start at 128°C with the maximum at 168°C.

Original language	English
Pages (from-to)	521-530
Number of pages	10
Journal	Journal of Applied Polymer Science
Volume	121
Issue number	1
DOIs	https://doi.org/10.1002/app.33655
State	Published - 5 Jul 2011
Externally published	Yes

Keywords

DSC
RPA
chain scission
cross-linking
dicumyl peroxide
ethylene-octene copolymer

ASJC Scopus subject areas

General Chemistry
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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title = "Cross-linking of ethylene-octene copolymer (EOC) by dicumyl peroxide (DCP)",

abstract = "Ethylene-octene copolymer (EOC) was crosslinked by dicumyl peroxide (DCP) at various temperatures (150-200°C). Six concentrations of DCP in range 0.2-0.7 wt \% were investigated. cross-linking was studied by rubber process analyzer (RPA) and by differential scanning calorimetry (DSC). From RPA data analysis real part modulus s', tan δ, and reaction rate were investigated as a function of peroxide content and temperature. The highest s'max and the lowest tan δ were found for 0.7\% of DCP at 150°C. Chain scission was analyzed by slope analysis of conversion ratio, X in times after reaching the maximum. Less susceptible to chain scission are temperatures in range 150-170°C and peroxide levels 0.2-0.5\%. Heat of reaction was analyzed by DSC at various heating rates (5-40°C min-1). It was found to be exothermic. By projection to zero heating rate, the reaction was found to start at 128°C with the maximum at 168°C.",

keywords = "DSC, RPA, chain scission, cross-linking, dicumyl peroxide, ethylene-octene copolymer",

author = "Petr Svoboda and Sameepa Poongavalappil and Rajesh Theravalappil and Dagmar Svobodova and Pavel Mokrejs and Karel Kolomaznik and Toshiaki Ougizawa and Takashi Inoue",

year = "2011",

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doi = "10.1002/app.33655",

language = "English",

volume = "121",

pages = "521--530",

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AU - Svoboda, Petr

AU - Poongavalappil, Sameepa

AU - Theravalappil, Rajesh

AU - Svobodova, Dagmar

AU - Mokrejs, Pavel

AU - Kolomaznik, Karel

AU - Ougizawa, Toshiaki

AU - Inoue, Takashi

PY - 2011/7/5

Y1 - 2011/7/5

N2 - Ethylene-octene copolymer (EOC) was crosslinked by dicumyl peroxide (DCP) at various temperatures (150-200°C). Six concentrations of DCP in range 0.2-0.7 wt % were investigated. cross-linking was studied by rubber process analyzer (RPA) and by differential scanning calorimetry (DSC). From RPA data analysis real part modulus s', tan δ, and reaction rate were investigated as a function of peroxide content and temperature. The highest s'max and the lowest tan δ were found for 0.7% of DCP at 150°C. Chain scission was analyzed by slope analysis of conversion ratio, X in times after reaching the maximum. Less susceptible to chain scission are temperatures in range 150-170°C and peroxide levels 0.2-0.5%. Heat of reaction was analyzed by DSC at various heating rates (5-40°C min-1). It was found to be exothermic. By projection to zero heating rate, the reaction was found to start at 128°C with the maximum at 168°C.

AB - Ethylene-octene copolymer (EOC) was crosslinked by dicumyl peroxide (DCP) at various temperatures (150-200°C). Six concentrations of DCP in range 0.2-0.7 wt % were investigated. cross-linking was studied by rubber process analyzer (RPA) and by differential scanning calorimetry (DSC). From RPA data analysis real part modulus s', tan δ, and reaction rate were investigated as a function of peroxide content and temperature. The highest s'max and the lowest tan δ were found for 0.7% of DCP at 150°C. Chain scission was analyzed by slope analysis of conversion ratio, X in times after reaching the maximum. Less susceptible to chain scission are temperatures in range 150-170°C and peroxide levels 0.2-0.5%. Heat of reaction was analyzed by DSC at various heating rates (5-40°C min-1). It was found to be exothermic. By projection to zero heating rate, the reaction was found to start at 128°C with the maximum at 168°C.

KW - DSC

KW - RPA

KW - chain scission

KW - cross-linking

KW - dicumyl peroxide

KW - ethylene-octene copolymer

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U2 - 10.1002/app.33655

DO - 10.1002/app.33655

M3 - Article

AN - SCOPUS:79953683397

SN - 0021-8995

VL - 121

SP - 521

EP - 530

JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

IS - 1

ER -

Cross-linking of ethylene-octene copolymer (EOC) by dicumyl peroxide (DCP)

Abstract

Keywords

ASJC Scopus subject areas

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