A type of smart thermochromic filament has been developed, composed of 35% UMB Blue and 65% polypropylene. It was able to change colour between white and blue depending on the temperature. A set of examinations including DSC, SEM, XRD, FTIR and tensile strength test, has been carried out to study the properties of the smart filament. The successful development of the thermochromic filament will enable textile based smart products to be developed for applications where the effect can be indicated by the change of colour.
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