Mercaptopropyl-doped ultra-small silica modified GO nanosheets to enhance mechanical properties of nitrile butadiene rubber. (14th March 2022)

• Record Type: Journal Article
• Authors: Qiu, Jun; Zhang, Kefu; Yan, Lifeng
• Is Part Of: Polymer. Volume 243(2022)
• Publication Date: 2022-03-14
• Subjects: Nitrile butadiene rubber -- Ultra-small mercaptopropyl doped silica -- Low graphene oxide content -- Carbon black -- Reinforcement; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2022.124627
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: Graphene oxide (GO) nanosheets reinforced rubbers had been extensively researched. However, it is very difficult to make GO nanosheets uniformly dispersed in the polar nitrile butadiene rubber (NBR) matrix and non-polar carbon black (CB) simultaneously. The ultra-small mercaptopropyl doped silica (HS@SiO2 ) anchored on the GO nanosheet (HS@SiO2 -GO) has been synthesized through the condensation of the tetraethoxysilane (TEOS) and (3-Mercaptopropyl)trimethoxysilane (MPTS) monomer. The as-prepared mercaptopropyl doped silica modified graphene oxide has strong interfacial interaction with both the polar NBR matrix and non-polar carbon black nanoparticles. Excitingly, with only 1 phr of GO modified by HS@SiO2 has greatly improved the tensile strength of CB/NBR composites from 8.9 MPa to 16.1 MPa. Graphical abstract: Image 1 Highlights: Ultra-small mercaptopropyl doped silica (HS@SiO2 ) anchored on the GO nanosheet (HS@SiO2 -GO) has been synthesized. It shows strong interaction with both nitrile butadiene rubber and carbon black. The tensile strength of composites increased from 8.9 MPa to 16.1 MPa with only 1 phr of modified GO.