A Robust Modification of SiO2 Nanoparticles by Poly(2-hydroxyethylmethacrylate) via Surface-Initiated Atom Transfer Radical Polymerization

Duy Trinh Nguyen1, Thuong Nhan Phu Nguyen1, Duy Chinh Nguyen1, Van Thi Thanh Ho2, Md. Rafiqul Islam3, Kwon Taek Lim3 and Long Giang Bach1,*

1Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, Vietnam

2Hochiminh University of Natural Resources and Environment, 236B Le Van Sy, Ward 1, Tan Binh District, Ho Chi Minh City, Vietnam

3Pukyong National University, Busan 608-737, Republic of Korea

*Corresponding author: Fax :+ 84 28 39404759, Tel : + 84 96 9294297; E-mail: blgiangntt@gmail.com

Abstract

An effortless and efficient method for the alteration of SiO2 nanoparticles by poly(2-hydroxyethylmethacrylate) (PHEMA) has been developed. Initially, a strategic atom transfer radical polymerization (ATRP) initiator was anchored to SiO2 nanoparticles surface via coupling reaction followed by surface-initiated atom transfer radical polymerization of HEMA successfully afforded chemically grafted PHEMA to SiO2 nanoparticles (PHEMA-g-SiO2). We used XPS, FT-IR and EDS analyses for confirming the covalent immobilization of PHEMA onto SiO2 nanoparticles. TGA/DSC and zeta potentials measurements were used for determining the thermal and surface charge features of the nanocomposites, respectively.

Keywords

Surface functionalization, SiO2 Nanoparticles, Polymer chains, Poly(2-hydroxyethylmethacrylate)

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