Journal article

Reversible Nontoxic Thermochromic Microcapsules.

Bingxin Liu, Alicia Rasines Mazo, Paul A Gurr, Greg G Qiao

ACS Appl Mater Interfaces | American Chemical Society | Published : 2020


Thermochromic materials exhibit a color change in response to a change in temperature. Creating nontoxic microcapsules containing thermochromic materials for applications in ink and film materials is historically challenging. In this study, we develop a nontoxic chlorophenol red (CPR)-water thermochromic system and its microcapsules with silicone shells via a reaction between water and octadecyltrichlorosilane (OTS) at the interface of a w/o emulsion. The obtained microcapsules exhibit a clear color change with full reversibility and are successfully used as inks by screen printing and as additives in films. Nontoxicity of both microcapsules and films is demonstrated through cell cytotoxicit..

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Awarded by Australian Research Council

Funding Acknowledgements

B.L. and P.A.G. thank the Australian Research Council (ARC), the University of Melbourne and Mondelez Australia for providing funding through Industrial Transformation Research Hub (ITRH, Project ID: IH120100053). The authors wish to thank Tom Pattison, Matthew Biviano, and Min Liu for their assistance.