首页|Study on preparation,characterization and application of mixed-colorants thermochromic microcapsules

Study on preparation,characterization and application of mixed-colorants thermochromic microcapsules

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In order to expand the color-change range and make the discoloration temperature suitable for the daily textiles,a new formulation of mixed-colorants thermochromic core material is designed,in which crystal violet lactone(CVL)is the basic color former,bisphenol A(BPA)is the developer,especially the solvent-based dye and dodecyl dedecanoate are used as the extended dye and the solvent,respectively.Scanning electron microscope(SEM),differential scanning calorimeter(DSC)and thermogravimetric analyzer(TGA)were applied to study the morphology,encapsulation rate,non-isothermal crystallization behavior and thermal stability of the mixed-colorant thermochromic microcapsules(MCTMs)prepared by in-situ polymerization.The results show that MCTMs have good sphericity,uniform particle size,good thermal stability and the encapsulation rate can reach 86.73％.Under the non-isothermal conditions,the encapsulation of formaldehyde-melamine resin wall material can slightly reduce the crystallization rate of the solvent,but does not affect the relative crystallinity,thermal properties and discoloration sensi-tivity of the core materials.With the variety of ambient temperatures in the range of 20-35 ℃,the printed cotton fabrics with MCTMs could change color reversibly between different tones with good reliability and durability,and exhibit more gorgeous colors than the common thermochromic materials.

Thermochromic microcapsuleColor-change rangePhase-change materialCrystallization behavior

Lan Zhou、Jingpeng Ye、Qinze Cai、Guojin Liu、Mehran Dadgar、Guocheng Zhu、Guoqing Zhang

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College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou,310018,China

Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing,312000,China

Zhejiang Charming Dyeing and Finishing Co.,Ltd,Jiaxing,314500,China

Department of Textile,University of Neyshabur,Adib Boulevard,Khorasan Razavi Province,Iran

School of Materials Science& Engineering,Zhejiang Sci-Tech University,Hangzhou,310018,China

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国家自然科学基金Key Program for International Science and Technology Innovation Cooperation Projects of China

220752522022YFE0125900

2024

10.1016/j.partic.2023.08.016

颗粒学报(英文版)
中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD
影响因子：0.632
ISSN：1674-2001
年,卷(期)：2024.88(5)
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