Open Access

ARTICLE

Fabrication of UV–Curing Linalool–Polysiloxane Hybrid Films with High Refractive Index and Transparency

Wenqing Xiao^1,#, Lewen Tan^1,2,#, Xunjun Chen^1,*, Qiaoguang Li^1,*, Yunqing Ruan¹

1 College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
2 R&D Department, Guangzhou Silicon Core Material Technology Co., Ltd., Guangzhou, 510220, China

* Corresponding Authors: Xunjun Chen. Email: ; Qiaoguang Li. Email:
# Wenqing Xiao and Lewen Tan contributed equally to this work

Journal of Renewable Materials 2024, 12(3), 569-583. https://doi.org/10.32604/jrm.2023.046662

Received 10 October 2023; Accepted 20 December 2023; Issue published 11 April 2024

Abstract

In this article, a series of high refractive indices (1.50–1.53) thiol phenyl polysiloxane (TPS) were synthesized via hydrolytic sol–gel reaction. The Fourier transform infrared spectra (FT–IR) and nuclear magnetic resonance spectra (NMR) results showed that TPS conformed to the predicted structures. Natural terpene linalool was exploited as photocrosslinker to fabricate UV–curing linalool–polysiloxane hybrid films (LPH) with TPS via photoinitiated thiol–ene reaction. LPH rapidly cured under UV irradiation at the intensity of 80 mW/cm² in 30 s, exhibiting good UV–curing properties. The optical transmittance of LPH in the wavelength of 300–800 nm was over 90%, exhibiting good optical transparency. The water contact angle and water vapor permeability results showed that the introduction of phenyl groups enhance the hydrophobicity and water vapor barrier properties of LPH. The results indicated the potential of LPHs in the applications of optical functional coatings.

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Keywords

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