Six varieties of cotton are heat treated at temperatures of 100°C, 140°C, and 180°C. Frictional parameters, via coeffi cicnts of energy dissipation, are measured on each of these and control samples (20°C) at a number of consecutive relative humidities (30%, 45%, 55%, 65%, 80%, 65%, 55%, 45%, and 30%). The results for all combinations are discussed. Comparisons between these findings and those of other investigators are made.
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