Kinetics of end crosslinking in dense polymer melts

G. S. Grest; K. Kremer; E. R. Duering

doi:10.1209/0295-5075/19/3/008

Kinetics of end crosslinking in dense polymer melts

G. S. Grest
, K. Kremer
, E. R. Duering

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

64 Scopus citations

Abstract

The kinetics of the end crosslinking process in linear-polymer melts is studied using molecular-dynamics simulations. Starting from an equilibrated melt, tetrafunctional crosslinkers are attached randomly to a fraction x of the chain ends. The system is then allowed to evolve. When a free end comes within a short reaction radius rxfrom an unsaturated crosslinker, the chain ends are attached. Two cases can be distinguished. In the first, with a stoichiometric number (xs= 1/4) of crosslinkers present, the time dependence of such quantities as the number of free ends and the number of unsaturated crosslinkers decays as a power law in time t–awith a ≈ 0.5. However, for x ≠ xs, the decay is significantly faster. © 1992 IOP Publishing Ltd.

Original language	English
Pages (from-to)	195-200
Number of pages	6
Journal	EPL
Volume	19
Issue number	3
DOIs	https://doi.org/10.1209/0295-5075/19/3/008
State	Published - Jun 1 1992
Externally published	Yes

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title = "Kinetics of end crosslinking in dense polymer melts",

abstract = "The kinetics of the end crosslinking process in linear-polymer melts is studied using molecular-dynamics simulations. Starting from an equilibrated melt, tetrafunctional crosslinkers are attached randomly to a fraction x of the chain ends. The system is then allowed to evolve. When a free end comes within a short reaction radius rxfrom an unsaturated crosslinker, the chain ends are attached. Two cases can be distinguished. In the first, with a stoichiometric number (xs= 1/4) of crosslinkers present, the time dependence of such quantities as the number of free ends and the number of unsaturated crosslinkers decays as a power law in time t{\textendash}awith a ≈ 0.5. However, for x ≠ xs, the decay is significantly faster. {\textcopyright} 1992 IOP Publishing Ltd.",

author = "Grest, \{G. S.\} and K. Kremer and Duering, \{E. R.\}",

year = "1992",

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doi = "10.1209/0295-5075/19/3/008",

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TY - JOUR

T1 - Kinetics of end crosslinking in dense polymer melts

AU - Grest, G. S.

AU - Kremer, K.

AU - Duering, E. R.

PY - 1992/6/1

Y1 - 1992/6/1

N2 - The kinetics of the end crosslinking process in linear-polymer melts is studied using molecular-dynamics simulations. Starting from an equilibrated melt, tetrafunctional crosslinkers are attached randomly to a fraction x of the chain ends. The system is then allowed to evolve. When a free end comes within a short reaction radius rxfrom an unsaturated crosslinker, the chain ends are attached. Two cases can be distinguished. In the first, with a stoichiometric number (xs= 1/4) of crosslinkers present, the time dependence of such quantities as the number of free ends and the number of unsaturated crosslinkers decays as a power law in time t–awith a ≈ 0.5. However, for x ≠ xs, the decay is significantly faster. © 1992 IOP Publishing Ltd.

AB - The kinetics of the end crosslinking process in linear-polymer melts is studied using molecular-dynamics simulations. Starting from an equilibrated melt, tetrafunctional crosslinkers are attached randomly to a fraction x of the chain ends. The system is then allowed to evolve. When a free end comes within a short reaction radius rxfrom an unsaturated crosslinker, the chain ends are attached. Two cases can be distinguished. In the first, with a stoichiometric number (xs= 1/4) of crosslinkers present, the time dependence of such quantities as the number of free ends and the number of unsaturated crosslinkers decays as a power law in time t–awith a ≈ 0.5. However, for x ≠ xs, the decay is significantly faster. © 1992 IOP Publishing Ltd.

UR - https://www.scopus.com/pages/publications/84956219889

U2 - 10.1209/0295-5075/19/3/008

DO - 10.1209/0295-5075/19/3/008

M3 - Letter

SN - 0295-5075

VL - 19

SP - 195

EP - 200

JO - EPL

JF - EPL

IS - 3

ER -

Kinetics of end crosslinking in dense polymer melts

Abstract

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