CONCLUSION
In summary, stable crude oil emulsification has been achieved firstly by oil-soluble nanoparticles. Combining inverse emulsion polymerization and photo emulsion polymerization, PVK chains with different lengths were successfully grafted onto the water soluble PAA core dispersed in hexane and the novel series of oil-soluble latex polymer brush features mono-dispersity, well-tuned size and fluorescence, multiple oil-solubility and stability. More importantly, the amphiphilic nature of the latex particles could be utilized to stabilize crude oil droplets in water by forming Pickering emulsions with viscosity reduced by 99% for 30 days. Therefore, the oil-soluble core-shell latex particles serve as promising candidates to be applied in petrochemical industry by improving heavy crude oil flowability during the exploration, transportation, and recovery process.