Photocurable acrylate epoxy/ZnO-Ag nanocomposite coating: fabrication, mechanical and antibacterial properties

Thien Vuong Nguyen; Truc Vy Do; Thanh Dung Ngo; Tuan Anh Nguyen; Le Trong Lu; Quoc Trung Vu; Lan Pham Thi; Dai Lam Tran

doi:10.1039/d2ra03546d

Photocurable acrylate epoxy/ZnO-Ag nanocomposite coating: fabrication, mechanical and antibacterial properties

RSC Adv. 2022 Aug 17;12(36):23346-23355. doi: 10.1039/d2ra03546d. eCollection 2022 Aug 16.

Authors

Thien Vuong Nguyen^{1

2}, Truc Vy Do^{1

2}, Thanh Dung Ngo^{1

2}, Tuan Anh Nguyen¹, Le Trong Lu^{1

2}, Quoc Trung Vu³, Lan Pham Thi¹, Dai Lam Tran^{1

2}

Affiliations

¹ Institute for Tropical Technology, VAST 18 Hoang Quoc Viet, Cau Giay Hanoi Vietnam trandailam@gmail.com.
² Graduate University of Science and Technology, VAST 18 Hoang Quoc Viet, Cau Giay Hanoi Vietnam.
³ Faculty of Chemistry, Hanoi National University of Education 136 Xuan Thuy, Cau Giay Hanoi Vietnam.

Abstract

In this study, a UV-curable acrylate epoxy nanocomposite coating has been prepared by incorporation of ZnO-Ag hybrid nanoparticles. For this purpose, firstly ZnO-Ag hybrid nanoparticles were fabricated by a seed-mediated growth method. Then, these ZnO-Ag hybrid nanoparticles (2 wt%) were added into the UV-curable acrylate resin matrices. The photocuring process of nanocomposite was evaluated by various factors, such as the conversion of acrylate double bonds, pendulum hardness and gel fraction. Under the 4.8 s UV-exposure time for full crosslinking, the obtained data indicated that incorporation of ZnO-Ag nanohybrids into the coating matrix changed the crosslinking process of coating significantly. A mechanical teat indicated that the presence of nanohybrids in photocurable coating matrix enhanced its abrasion resistance from 98.7 to 131.6 L per mil (33.3%). The antibacterial test against E. coli over 7 h indicated that E. coli bacteria were killed totally by nanocomposite coating, whereas it was 2.6 × 10⁴ CFU mL^-1 for the neat coating without nanoparticles.