TTS-package {TTS}

Estimates of material properties by Time-Temperature Superposition (TTS) analysis

Description

TTS analysis is often applied to frequency modulated data obtained by Dynamic Mechanic Analysis (DMA) and Rheometry in the analytical chemistry and physics areas. These techniques provide estimates of material mechanical properties (such as moduli) at different temperatures in a wider range of time. This package provides the Time-Temperature superposition Master Curve at a referred temperature by the three methods: the two wider used methods, Arrhenius based methods and WLF, and the newer methodology based on derivatives procedure. The Master Curve is smoothed by B-splines basis. The package output is composed of plots of experimental data, horizontal and vertical shifts, TTS data, and TTS data fitted using B-splines with bootstrap confidence intervals.

Details

Package:	TTS
Type:	Package
Version:	1.1
Date:	2023-02-24
License:	GPL >= 2

The main functions and data frame are TTS, TTS_10,PLOT.TTS, Epoxy,SBS, and PC

Author(s)

Antonio Meneses [e-mail], Salvador Naya [e-mail] and Javier Tarrio-Saavedra [e-mail]

Maintainer: Antonio Meneses [e-mail]

References

Naya, S., Meneses A., Tarrio-Saavedra, J., Artiaga R., Lopez-Beceiro, J. and Gracia-Fernandez C. (2013) New method for estimating shift factors in time-temperatura superposition models. Journal of Thermal Analysis and Calorimetry. ISSN 1388-6150. DOI 10.1007/s10973-013-3193-1.

Williams, M. L. (1964) Structural analysis of Viscoelastic materials. AIAA Journal, 785-808.

Zou, J., You F., Su L., Yang Z., Chen G. and Guo S. (2011). Failure Mechanism of Time-Temperature Superposition for Poly(vinyl chloride)/Dioctylphthalate (100/70) System. DOI 10.1002/app.35113.

Ferry J.D. (1980) Viscoelastic Properties of Polymers, Wiley: New York.

Artiaga R., Garcia A. Fundamentals of DMA. In: 'Thermal analysis. Fundamentals and applications to material characterization' (ed.: Artiaga R.) Publicaciones de la Universidade da Coruna, A Coruna, Spain, 183-206 (2005).

Chartoff R.P., Menczel J.D., Dillman S.H. Dynamic mechanical analysis (DMA). In: 'Thermal analysis of polymers. Fundamentals and applications' (eds.: Menczel J.D., Prime R.B.) Wiley, San Jose, 387-496 (2009).