Physical Aging in Polymer Glasses

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Science  31 Mar 1995:
Vol. 267, Issue 5206, pp. 1945-1947
DOI: 10.1126/science.267.5206.1945


Physical aging refers to structural relaxation of the glassy state toward the metastable equilibrium amorphous state, and it is accompanied by changes in almost all physical properties. These changes, which must be taken into account in the design, manufacture, and use of glassy polymer materials and devices, present a daunting challenge to theorists.

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