Surface functionalization of silica nanoparticles to enhance aging resistance of asphalt binder was written by Karnati, Sidharth Reddy;Oldham, Daniel;Fini, Elham H.;Zhang, Lifeng. And the article was included in Construction and Building Materials in 2019.HPLC of Formula: 38183-12-9 This article mentions the following:
Oxidation aging of asphalt pavement is among most prevalent factors causing pavement distresses. Introduction of silica nanoparticles (SNPs) has been found promising to reduce oxidation aging of asphalt binder. However, the effectiveness of SNPs is limited by their poor dispersion caused mainly by SNP agglomeration requiring significant mech. energy in processing to ensure dispersion. This paper examined merits of surface functionalization of SNPs with (3-aminopropyl) triethoxysilane (APTES) to improve its dispersion in asphalt binder using conventional processing techniques at relatively high loading of SNPs with low mech. energy input. The morphol., size, amount of amine functional groups of APTES surface-modified SNPs (APTES-SNPs) were characterized and optimized by scanning electron microscope (SEM), dynamic light scattering (DLS), Fourier-transform IR spectroscopy (FTIR) and fluorescence measurement. The comparison between the surface-modified and pristine SNPs on the anti-aging and rheol. properties of asphalt binder was conducted. The asphalt binders which contained APTES-SNPs demonstrated much better resistance to oxidative aging as evidenced by enhanced rheol. properties compared to those containing pristine SNPs. The findings from this research provides insights as to the effect of APTES-SNPs on aging resistance of asphalt binder. In the experiment, the researchers used many compounds, for example, 4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione (cas: 38183-12-9HPLC of Formula: 38183-12-9).
4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione (cas: 38183-12-9) belongs to benzofurans derivatives. Benzofuran is the “”parent”” of many related compounds with more complex structures. For example, psoralen is a benzofuran derivative that occurs in several plants. Introduction of benzofurans in organic synthesis, particularly drug synthesis, involves generally the use of their metalated species as nucleophiles in addition reactions or in metal-catalysed cross-coupling reactions.HPLC of Formula: 38183-12-9
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem