02828nas a2200241   4500008004100000022001400041245019400055210006900249260006700318300001400385490000700399520183400406653002702240653002902267653002602296653002302322653002702345653002302372100002202395700002602417700001802443856012502461       2011                        eng d  a1042-714700aNovel synthesis of nano-calcium carbonate (CaCO3)/polystyrene (PS) core-shell nanoparticles by atomized microemulsion technique and its effect on properties of polypropylene (PP) composites0 aNovel synthesis of nanocalcium carbonate CaCO3polystyrene PS cor  a111 RIVER ST, HOBOKEN 07030-5774, NJ USAbWILEY-BLACKWELLcDEC  a2571-25820 v223 a<p>Calcium carbonate (CaCO3)/polystyrene (PS) nanoparticles (&lt; 100 nm) with core-shell structure were synthesized by atomized microemulsion technique. The polymer chains were anchored onto the surface of nano-CaCO3 through triethoxyvinyl silane (TEVS) as a coupling agent. Ammonium persulfate (APS), sodium dodecyl sulfate (SDS) and n-pentanol were used as initiator, surfactant, and cosurfactant, respectively. Polymerization mechanism of core-shell latex particles was discussed. Encapsulation of nano-CaCO3 by PS was confirmed by using transmission electron microscope (TEM). Grafting percentage of core-shell particles was investigated by Thermogravimetric Analyzer (TGA). Nano-CaCO3/PS core-shell particles were characterized by Fourier transform infrared (FTIR) spectrophotometer and differential scanning calorimeter (DSC). The results of FTIR revealed existence of a strong interaction at the interface of nano-CaCO3 particle and PS, which implies that the polymer chains were successfully grafted onto the surface of nano-CaCO3 particle through the link of the coupling agent. In addition, TGA and DSC results indicated an enhancement of thermal stability of core-shell materials compared with the pure nano-PS. Nano-CaCO3/PS particles were blended with polypropylene (PP) matrix on Brabender Plastograph by melt process with different wt% of loading (i.e. 0.1-1 wt%). The interfacial adhesion between nano-CaCO3 particles and PP matrix was significantly improved when the nano-CaCO3 particles were grafted with PS, which led to increased thermal, rheological, and mechanical properties of (nano-CaCO3/PS)/PP composites. Scanning electron microscope (SEM) and atomic force microscope (AFM) images showed a perfect dispersion of the nano-CaCO3 particles in PP matrix. Copyright (C) 2011 John Wiley &amp; Sons, Ltd.</p>10aatomized microemulsion10acore-shell nanoparticles10amechanical properties10apolypropylene (PP)10aRheological properties10aThermal properties1 aMishra, Satyendra1 aChatterjee, Aniruddha1 aSingh, RajPal  uhttps://library.ncl.res.in/content/novel-synthesis-nano-calcium-carbonate-caco3polystyrene-ps-core-shell-nanoparticles-0