Effect of silica surface modification in 1-butyl-3-methylimidazolium tetrafluoroborate [Bmim][BF4] - poly(vinylidene fluoride-co-hexafluoropropene)(PVDF-HFP) ionogel

The preparation and properties of surface modification of silica in [Bmim][BF4] -(PVDF-HFP) ionogel haves been investigated. The surface modification of silica was prepared via co condensation of sol gel method using silane coupling agent, vinyltriethoxysilane (VTES). The silica content was characte...

Full description

Saved in:
Bibliographic Details
Main Authors: Karim, Jamilah, Dzulkipli, Mariah Zuliana, Ahmad, Azizan, Noor, Siti Aminah Mohd, Hassan, Nur Hasyareeda
Format: Conference Proceeding
Language:English
Subjects:
Coupling agents
Glass transition temperature
Hydrogen bonds
Hydroxyl groups
Organic chemistry
Silicon dioxide
Sol-gel processes
Stability analysis
Thermal stability
Vinylidene
Vinylidene fluoride
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The preparation and properties of surface modification of silica in [Bmim][BF4] -(PVDF-HFP) ionogel haves been investigated. The surface modification of silica was prepared via co condensation of sol gel method using silane coupling agent, vinyltriethoxysilane (VTES). The silica content was characterized and analyzed in term of chemical interaction and thermal stability. Hydrogen bond networks between BF4- and the hydroxyl group in the silica was suggested as the mechanism of this surface modification effect, which was characterized by FTIR. TGA and DSC analysis shows ionogel is stable up to around 475°C, at which a final one-step degradation occurs and increment of glass transition temperature (Tg). [Bmim][BF4] -PVDF-HFP prepared with 30%TEOS-VTES gives the highest value Tg (-81.86°C).
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5111253