Entropic shrinkage of an oxide glass
Source abstract
Abstract
Entropic elasticity, a property typical of rubbers and well known in organic polymers with appropriate network structures, is not known to occur in oxide glasses. Here, we report the occurrence of entropic elasticity in phosphate-glass fibres with highly anisotropic structures, drawn by mechanical elongation from supercooled liquids. We observed a large lengthwise shrinkage of ~35% for phosphate glasses with an enhanced one-dimensional structure, as well as a distinct endotherm on reheating them up to temperatures between that of the glass transition temperature and the softening temperature. Our results strongly suggest the possibility of designing oxide glasses with a rubbery nature at high temperatures.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Material Dynamics and Properties · Glass properties and applications · Liquid Crystal Research Advancements
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References (28)
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