NUCLEATION AND GROWTH OF GAS BUBBLES IN ELASTOMERS

被引:233
作者
GENT, AN
TOMPKINS, DA
机构
[1] Institute of Polymer Science, University of Akron, Akron
关键词
D O I
10.1063/1.1658026
中图分类号
O59 [应用物理学];
学科分类号
摘要
An experimental study is described of the formation and growth of gas bubbles in crosslinked elastomers. A critical condition for bubble formation is found to hold in most cases: The gas supersaturation pressure must exceed 5G/2, where G is the shear modulus of the elastomer. The kinetics of bubble growth are shown to be in good accord with a simple diffusion-controlled growth relation for a variety of gases, elastomers, temperatures, and pressures. The number of bubbles depends strongly upon the degree of supersaturation above the critical level. This effect is attributed partly to kinetic factors and partly to the presence initially of internal holes of a range of sizes. © 1969 The American Institute of Physics.
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页码:2520 / &
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