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Effect of silica nanocomposite modified with some polythiophene derivations on characteristics and properties of waterborne acrylic coatings

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Abstract

In this study, we utilized nanocomposites prepared from nanosilica (SiO2) and various polythiophene derivatives as enhancement additives for acrylic coatings. The nanocomposites were synthesized in a nitrogen environment using FeCl3 as a catalyst in a chloroform solvent. The weight ratio of nanosilica to monomers was 2/1, specifically for the compounds (5-benzo[d]thiazol-2-yl)-7-methoxy-2-(thiophen-3-yl)benzo[d]oxazole (P1), 3-(2-benzothiazolyl)thiophene (P2), and 5-(benzo[d]thiazol-2-yl)-2-(thiophene-3-yl)benzo[d]oxazole (P3). Analysis techniques including IR, TGA, SEM, and UV–Vis were employed to demonstrate the formation of polythiophenes on the surface of the nanosilica. The presence of polythiophenes on the nanosilica broadened the UV absorption region. Upon adding the nanocomposites to acrylic coatings, the UV absorption intensity of the coatings was increased. Notably, the coating containing SiO2-P3 nanocomposite exhibited the highest abrasion resistance among all the investigated samples. By varying the content of SiO2-P3 nanocomposite, we observed enhanced abrasion resistance, adhesion, pencil hardness, and gloss of the acrylic coating. The maximum values were achieved when the content of SiO2-P3 nanoparticles was 2 wt.%. The SiO2-P3 nanoparticles were uniformly dispersed in the acrylic coatings, leading to an improvement in the coating's sunlight-reflective ability. Consequently, the acrylic/SiO2-P3 nanocomposite coatings exhibited potential for outdoor applications, particularly as UV-resistant coatings.

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Authors and Affiliations

  1. Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, 100000, Viet Nam

    Duong Thi Thuy Nguyen, Chinh Thuy Nguyen, Thai Xuan Nguyen, Hung Phi Dao & Hoang Thai

  2. Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, 100000, Viet Nam

    Duong Thi Thuy Nguyen, Chinh Thuy Nguyen & Hoang Thai

  3. Nguyen Trai High School, 50 Nam Cao, Ba Dinh, Ha Noi, 100000, Viet Nam

    Dai Ba Do

  4. Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, Ha Noi, 100000, Viet Nam

    Dai Ba Do, Thinh Huu Nguyen & Trung Quoc Vu

  5. Thanh Do University, Kim Chung, Hoai Duc, Ha Noi, 100000, Viet Nam

    Linh Ngoc Nguyen & Manh Quoc Vu

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  1. Duong Thi Thuy Nguyen
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Contributions

NTTD was involved in preparation of nanocomposite and samples, investigation, and writing original draft; DBD contributed to preparation of nanocomposite and samples and conceptualization; NHT took part in preparation of nanocomposite and methodology; NTC participated in methodology and data analysis, supervision, and writing review and editing; NXT was responsible for methodology and investigation; DPH was involved in data analysis and writing original draft; TH contributed to writing review and editing and conceptualization; NNL took part in data analysis; VQM participated in preparation of samples and methodology; VQT was responsible for conceptualization and writing review and editing.

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Correspondence to Trung Quoc Vu.

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Nguyen, D.T.T., Do, D.B., Nguyen, T.H. et al. Effect of silica nanocomposite modified with some polythiophene derivations on characteristics and properties of waterborne acrylic coatings. J Coat Technol Res (2024). https://doi.org/10.1007/s11998-024-00954-z

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