Swelling in crosslinked natural rubber: experimental evidence of the crosslink density dependence of χ

Gregory B. McKenna; Kathleen M. Flynn; Yihong Chen

doi:10.1016/0032-3861(90)90020-Y

Swelling in crosslinked natural rubber: experimental evidence of the crosslink density dependence of χ

Gregory B. McKenna, Kathleen M. Flynn, Yihong Chen

Chemical Engineering

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99 Scopus citations

Abstract

Mechanical and swelling measurements were carried out on samples of dicumyl-peroxide-crosslinked natural rubber. The balance of the elastic free energy and the mixing free energy at swelling equilibrium was used to calculate the value of the Flory-Huggins χ parameter for a series of crosslinked rubbers swollen in an excess of different solvents. The results show that χ for the crosslinked rubber is greater than that of the uncrosslinked counterpart. Other evidence from the literature, based on swelling activity parameter measurements, which supports this conclusion, is discussed. We also find that the value of χ in the crosslinked rubber is a linear function of the crosslink density. We examine these results in the context of the Freed and Pesci lattice model.

Original language	English
Pages (from-to)	1937-1945
Number of pages	9
Journal	Polymer
Volume	31
Issue number	10
DOIs	https://doi.org/10.1016/0032-3861(90)90020-Y
State	Published - Oct 1990

Keywords

Flory-Huggins interaction parameter
Valandis-Landel function
dilatational modulus
rubber elasticity
strain energy function
swelling
swelling activity parameter

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10.1016/0032-3861(90)90020-Y

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@article{1083a0946eac45f287d8918338a8d31f,

title = "Swelling in crosslinked natural rubber: experimental evidence of the crosslink density dependence of χ",

abstract = "Mechanical and swelling measurements were carried out on samples of dicumyl-peroxide-crosslinked natural rubber. The balance of the elastic free energy and the mixing free energy at swelling equilibrium was used to calculate the value of the Flory-Huggins χ parameter for a series of crosslinked rubbers swollen in an excess of different solvents. The results show that χ for the crosslinked rubber is greater than that of the uncrosslinked counterpart. Other evidence from the literature, based on swelling activity parameter measurements, which supports this conclusion, is discussed. We also find that the value of χ in the crosslinked rubber is a linear function of the crosslink density. We examine these results in the context of the Freed and Pesci lattice model.",

keywords = "Flory-Huggins interaction parameter, Valandis-Landel function, dilatational modulus, rubber elasticity, strain energy function, swelling, swelling activity parameter",

author = "McKenna, {Gregory B.} and Flynn, {Kathleen M.} and Yihong Chen",

year = "1990",

month = oct,

doi = "10.1016/0032-3861(90)90020-Y",

language = "English",

volume = "31",

pages = "1937--1945",

journal = "Polymer",

issn = "0032-3861",

number = "10",

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TY - JOUR

T1 - Swelling in crosslinked natural rubber

T2 - experimental evidence of the crosslink density dependence of χ

AU - McKenna, Gregory B.

AU - Flynn, Kathleen M.

AU - Chen, Yihong

PY - 1990/10

Y1 - 1990/10

N2 - Mechanical and swelling measurements were carried out on samples of dicumyl-peroxide-crosslinked natural rubber. The balance of the elastic free energy and the mixing free energy at swelling equilibrium was used to calculate the value of the Flory-Huggins χ parameter for a series of crosslinked rubbers swollen in an excess of different solvents. The results show that χ for the crosslinked rubber is greater than that of the uncrosslinked counterpart. Other evidence from the literature, based on swelling activity parameter measurements, which supports this conclusion, is discussed. We also find that the value of χ in the crosslinked rubber is a linear function of the crosslink density. We examine these results in the context of the Freed and Pesci lattice model.

AB - Mechanical and swelling measurements were carried out on samples of dicumyl-peroxide-crosslinked natural rubber. The balance of the elastic free energy and the mixing free energy at swelling equilibrium was used to calculate the value of the Flory-Huggins χ parameter for a series of crosslinked rubbers swollen in an excess of different solvents. The results show that χ for the crosslinked rubber is greater than that of the uncrosslinked counterpart. Other evidence from the literature, based on swelling activity parameter measurements, which supports this conclusion, is discussed. We also find that the value of χ in the crosslinked rubber is a linear function of the crosslink density. We examine these results in the context of the Freed and Pesci lattice model.

KW - Flory-Huggins interaction parameter

KW - Valandis-Landel function

KW - dilatational modulus

KW - rubber elasticity

KW - strain energy function

KW - swelling

KW - swelling activity parameter

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DO - 10.1016/0032-3861(90)90020-Y

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