Hydrophobic self-sustained natural cellulose-BaSO4 composite coating for efficient daytime radiative cooling

IF 4.9 2区工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD

Cellulose Pub Date : 2025-01-25 DOI:10.1007/s10570-025-06392-3

Jay Prakash Bijarniya, Swikriti Tripathi, Sudepta Bauri, Jahar Sarkar, Pralay Maiti

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Abstract

The utilization of natural materials along with the renewable daytime radiative cooling process is the present need to encourage better sustainable development. Natural pulp has excellent radiative cooling properties but good hydrophilicity, poor adhesive strength and limited solar reflectance (which may be a severe issue for the high solar intensity zones like India). Therefore, a composite of the barium sulphate particles in cellulose pulp is developed in this study to produce the daytime radiative cooling coating with all favorable characteristics. Barium sulphate particles physically interact with the pulp, so the pulp tends to disperse more uniformly in the dimethylformamide solution in the presence of barium sulphate particles. This composite dispersion forms a stable, adhesive, smooth and environmentally friendly coating. The developed coatings' hydrophobic nature is also detected during the experiment and sliding drops of dew form on the coating. The developed coating produced a temperature drop of 4 °C at noon and 9.1 °C in the absence of solar irradiance. The maximum cooling power observed was 85 W/m² and the minimum cooling power of nearly 40 W/m² was recorded, corresponding to a minimum temperature drop just before noon, around 9:30—10:30 am during this experimental study.

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来源期刊

Cellulose 工程技术-材料科学：纺织

CiteScore

10.10

自引率

10.50%

发文量

580

审稿时长

3-8 weeks

期刊介绍： Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.