Price, D. M.; Foster, G. M.; Modulated temperature thermomechanical analysis of fibres. Journal of Thermal Analysis & Calorimetry 56(2) (1999) 649-654
The application of modulated temperature programming to thermomechanical analysis affords a method for measuring the "true" thermal expansion coefficients of materials that deform irreversibly during normal TMA. This may arise from creep under the applied load or changes in dimensions due to relaxation of orientation. Acrylic fibres made with various degrees of orientation shrink to different extents on heating but all show the same "true" thermal expansion coefficients using this approach. The application of this modulated temperature programming to Dynamic Mechanical Analysis is also discussed.
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