Anothai KamphanChanita KhanantongNisanart TraipholRakchart TraipholNaresuan UniversityMahidol UniversityChulalongkorn University2018-12-212019-03-142018-12-212019-03-142017-02-25Journal of Industrial and Engineering Chemistry. Vol.46, (2017), 130-138223459571226086X2-s2.0-85005992142https://repository.li.mahidol.ac.th/handle/20.500.14594/42179© 2016 The Korean Society of Industrial and Engineering Chemistry Reversible thermochromic polydiacetylene (PDA)/polyvinylpyrrolidone (PVP) nanocomposites are prepared by using 6 diacetylene (DA) monomers. The use of relatively low molecular weight (MW) PVP provides the nanocomposites with reversible thermochromism. The shortening of PDA alkyl tail causes the decrease of color-transition temperature, ranging from 75 to 85 °C. The shortening of alkyl segment adjacent to PDA carboxylic head group, however, does not provide the same trend. The nanocomposites constituting PDAs with 8, 6 and 4 methylene units exhibits color-transition at about the same temperature. The increase of PVP MW reduces the color-transition temperature and also affects thermochromic reversibilty of the PDA/PVP nanocomposites.Mahidol UniversityChemical EngineeringArticleSCOPUS10.1016/j.jiec.2016.10.023