Bromide and Chloride Ionic Liquids Applied to Enhance the Vulcanization and Performance of Natural Rubber Biocomposites Filled with Nanosized Silica

In this study, the possibility of using ionic liquids (ILs) as auxiliary substances improving the vulcanization and physicochemical properties of natural rubber (NR) biocomposites filled with nanosized silica was investigated. Hence, the influence of ILs with bromide and chloride anions and various...

Full description

Saved in:
Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2022-04, Vol.12 (7), p.1209
Main Authors: Maciejewska, Magdalena, Sowińska-Baranowska, Anna
Format: Article
Language:English
Subjects:
Aging
Aging (natural)
Anions
Biomedical materials
Carbon black
Cations
Chloride
Chlorides
Clay
Composite materials
composites
Crosslinking
Density
Dynamic stability
Hardness
Ionic liquids
Mechanical properties
nanosized silica
Natural rubber
natural rubber (NR)
Oxidation
Oxidation resistance
Physicochemical properties
Rubber
Silica
Silicon dioxide
Sulfur
Tensile strength
Thermal resistance
Thermal stability
Viscosity
Vulcanization
Zinc oxides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, the possibility of using ionic liquids (ILs) as auxiliary substances improving the vulcanization and physicochemical properties of natural rubber (NR) biocomposites filled with nanosized silica was investigated. Hence, the influence of ILs with bromide and chloride anions and various cations, i.e., alkylimidazolium, alkylpyrrolidinium and alkylpiperidinium cation, on the curing characteristics and crosslink density of NR compounds was determined. Furthermore, the effect of nanosized silica and ILs on the functional properties of the obtained vulcanizates, including mechanical properties under static and dynamic conditions, hardness, thermal stability and resistance to thermo-oxidative aging, were explored. Applying nanosized silica improved the processing safety of NR compounds but significantly increased the optimal vulcanization time compared to the unfilled rubber. ILs significantly improved the cure characteristics of NR compounds by increasing the rate of vulcanization and the crosslink density of NR biocomposites. Consequently, the tensile strength and hardness of the vulcanizates significantly increased compared to that without ILs. Moreover, the use of nanosized silica and ILs had a favorable impact on the thermal stability of the vulcanizates and their resistance to prolonged thermo-oxidation.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano12071209