Polyvinyl pyrrolidone grafted silica reinforced hydrogenated carboxylated nitrile latex film with improved mechanical properties

- PVP-g-SiO2 was prepared by free radical polymerization.
- HXNBR-(PVP-g-SiO2) latex film was prepared by diimide reduction of XNBR latex.
- Improved dispersity of PVP-g-SiO2 improved the mechanical properties of HXNBR.

A polyvinyl pyrrolidone grafted silica (PVP-g-SiO2) was prepared by free radical polymerization of N-vinyl-2-pyrrolidone and characterized by FTIR, TGA, SEM, and XPS, and the effect of catalyst concentration and reaction time on PVP-g-SiO2 was studied. A PVP-g-SiO2 reinforced hydrogenated carboxylated nitrile (HXNBR-(PVP-g-SiO2)) latex film was prepared by diimide reduction of XNBR latex and doping of PVP-g-SiO2. The HXNBR-(PVP-g-SiO2) latex film exhibited improved mechanical properties, due to the improved dispersity of PVP-g-SiO2 in HXNBR.

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