Hydrogenated polyisoprene-silica nanoparticles and their applications for nanocomposites with enhanced mechanical properties and thermal stability

Detecting the oxidative reactivity of nanoparticles: a new protocol for reducing artifacts

“…It is commercially available from Evonik Industries. Both FW2 and Aerosil 200 are widely applied in the nano field and have been well characterized and studied by both the manufacturer and many published authors (Bhowmick et al 2010; Moritz and Nagy 2002; Kongsinlark et al 2013; Sauvain et al 2012, 2008). Moreover, they have been used in our home institute for several years and characterized by our colleagues, finding that they matched the information provide from the manufacturers.…”

Synthesis of polybutadiene-silica nanoparticles via differential microemulsion polymerization and their hydrogenated nanoparticles by diimide reduction

“…This can be explained in that with a higher amount of N 2 H 4 , more diimide molecules were generated according to Eq. (5) resulting in an increase in the hydrogenation degree [13,14]. However, HD decreased when the N 2 H 4 concentration was higher than 3 mol/L.…”

“…Additionally, T id and T max of HPB-SiO 2 (10 wt% SiO 2 , 98.6 %HD) was higher than that of PB-SiO 2 . This implied that thermal stability of polybutadiene depended on the amount of C]C in the polymer chain [13,14]. The hydrogenation could improve the thermal stability of PB-SiO 2 by converting the weak p bond in PB-SiO 2 to a strong s bond, which leads to a higher thermal stability.…”

“…A high hydrogenation degree of 65% was achieved at a ratio of hydrogen peroxide to hydrazine of 1.3:1 [13]. Moreover, hydrogenated polyisoprene (HPIP)eSiO 2 nanocomposites were synthesized via DMP followed by diimide hydrogenation with boric acid as promoter, providing a hydrogenation degree of 98% at a ratio of hydrogen peroxide to hydrazine of 1.5:1 [14]. HPIP-SiO 2 composites were used as a nanofiller in natural rubber leading to improvement of mechanical properties, retention of tensile strength after thermal aging and ozone resistance.…”

Preparation of poly(methyl methacrylate)‐Silica nanoparticles via differential microemulsion polymerization and physical properties of NR/PMMA‐SiO2 hybrid membranes

“…In addition, from synthesis of poly(methyl methacrylate) (PMMA)/SiO 2 particles via emulsion polymerization, PMMA polymer could be grafted on the silica surface (37% grafting) and the silica particles became of lower aggregation . Furthermore, hydrogenated polyisoprene (HPIP)‐SiO 2 nanocomposites were synthesized via DMP followed by diimide hydrogenation, resulting in improved mechanical properties and exhibited a good retention of tensile strength after thermal aging and good resistance toward ozone exposure .…”