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Controllable preparation of PDMS-based copolymers with long-lasting high hydrophobicity for coating protection of summer cloth surfaces

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Abstract

Cool linen is used to produce summer clothing to be known as summer cloth. Nevertheless, ramie-fiber surfaces bear hydrophilic hydroxyls to result in rainwater wetting and stain adhering. To achieve outdoor application of summer cloth, here, light all-organic hydrophobic copolymer coatings were formed on surfaces of two various summer clothes. First, atom transfer radical polymerization was utilized to synthesize polydimethylsiloxane-block-polymethacryloxypropyl trimethoxysilane. Then, neat copolymer films and copolymer coating/cloth complexes were prepared. Coating/cloth complexes were characterized. Finally, hydrophobicity-induced antifouling properties of complexes were confirmed, followed by justifying good resistance to surface abrasion for coating/compact summer cloth complex with superhydrophobicity. As a result, the optimal coating/compact summer cloth complex can fight against ink pollution and exhibit a water contact angle of 150.3 degrees after 200 abrasion cycles, in which neat copolymer film has a light transmittance of ~ 90% based on 30 min of pre-hydrolysis. Superhydrophobicity is ascribed to silicon surface enriching-induced low surface energy as well as surface micro-/nano-binary composite rough structure. This work has realized a controllable preparation of silicon-bearing copolymers with long-term hydrophobicity for protecting various summer clothes.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This work was supported by the General Project of the 14th Five-Year Plan of Education Science in Jiangxi Province of China in 2022 [grant number 22YB285].

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Correspondence to Yalin Dong.

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Dong, Y. Controllable preparation of PDMS-based copolymers with long-lasting high hydrophobicity for coating protection of summer cloth surfaces. Chem. Pap. 78, 3367–3380 (2024). https://doi.org/10.1007/s11696-024-03318-4

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  • DOI: https://doi.org/10.1007/s11696-024-03318-4

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