Investigation on Silane Concentration of SiO2 Nanoparticle: FTIR Analysis
Ong, Huei Ruey
Iskandar, Wan Mohd Eqhwan
Chong, Jason
Khan, Md. Maksudur Rahman
Ong, Thai Kiat
Chua, Beng Kooi

How to Cite

Ong H.R., Iskandar W.M.E., Chong J., Khan M.M.R., Ong T.K., Chua B.K., 2023, Investigation on Silane Concentration of SiO2 Nanoparticle: FTIR Analysis, Chemical Engineering Transactions, 106, 1345-1350.


Conventionally, silica (SiO2) nanoparticle having a great potential as filler in many composites especially in plastic making. However, SiO2 nanoparticle is not suitable to be mixed with the plastic due to its hydrophilic properties. Surface functionalization of nanoparticle would become a great potential to overcome the issue by proposing triethoxyvinylsilane (TVS) as a silane coupling agent to functionalize the surface of SiO2. TVS can assist in tailoring the hydrophilic properties into hydrophobic which can further enhance SiO2 properties. In this study, TVS has been prepared with various concentration to functionalize the surface of SiO2 nanoparticle. SEM and FTIR has been conducted to study the morphology and determine the functional group of the SiO2 nanoparticle. Findings shows that the size SiO2 nanoparticle were in range the range of 100 nm and visualize the hierarchical microstructure showing the silane has successfully embedded on the surface of nanoparticle. Apart from that, new peak appearance at peak 2,975 cm-1 and 1,089 cm-1 confirms the successful grafting of TVS on the surface of SiO2 nanoparticle. Furthermore, FTIR peak shift was investigated and found that the SiO2 with 5 % TVS exhibit highest peak shift at 1,141 cm-1with respect to SiO2 as spectrum at 1,089 cm-1. These findings address the problem statement by demonstrating the successful surface modification of SiO2 nanoparticle using TVS to tailor its hydrophilic properties to be hydrophobic.