TY - JOUR
T1 - Properties of polystyrene/nano-SiO 2 composite microspheres prepared by pickering emulsion polymerization
AU - Zhang, Weihong
AU - Fan, Xiaodong
AU - Tian, Wei
AU - Huang, Yi
PY - 2012/8
Y1 - 2012/8
N2 - Stable Pickering emulsion was fabricated using amphiphilic nano-SiO 2 particles as stabilizer. Then, two kinds of polystyrene/nano-SiO 2 (PS/SiO 2) composite microspheres, which had different size and different morphology, were synthesized with oil-soluble azobisisobutyronitrile (AIBN) and water-soluble ammonium persulfate (APS) as initiator respectively. The possible mechanisms of Pickering emulsion polymerization initiated by different initiator were discussed. The product was characterized by means of FT-IR, multi angle laser light scattering photometer (GPC-MALLS), TGA and DSC. When AIBN was used as the initiator, the diameters of the microspheres were micron-sized (0.5 μm~2.0 μm). While the sub-micron-sized (0.1 μm~0.5 μm) microspheres were obtained by using APS as the initiator. And the weight-average molecular weight (M̄ w) of two kinds of polymer is 4.780×10 4 g/mol and 3.411×10 5 g/mol, respectively. The results of TGA and DSC indicated that the thermal properties of composite were elevated duo to the existence of nano-SiO 2.
AB - Stable Pickering emulsion was fabricated using amphiphilic nano-SiO 2 particles as stabilizer. Then, two kinds of polystyrene/nano-SiO 2 (PS/SiO 2) composite microspheres, which had different size and different morphology, were synthesized with oil-soluble azobisisobutyronitrile (AIBN) and water-soluble ammonium persulfate (APS) as initiator respectively. The possible mechanisms of Pickering emulsion polymerization initiated by different initiator were discussed. The product was characterized by means of FT-IR, multi angle laser light scattering photometer (GPC-MALLS), TGA and DSC. When AIBN was used as the initiator, the diameters of the microspheres were micron-sized (0.5 μm~2.0 μm). While the sub-micron-sized (0.1 μm~0.5 μm) microspheres were obtained by using APS as the initiator. And the weight-average molecular weight (M̄ w) of two kinds of polymer is 4.780×10 4 g/mol and 3.411×10 5 g/mol, respectively. The results of TGA and DSC indicated that the thermal properties of composite were elevated duo to the existence of nano-SiO 2.
KW - Composite microsphere
KW - Nano-SiO
KW - Pickering emulsion polymerization
KW - Polystyrene
UR - http://www.scopus.com/inward/record.url?scp=84867622149&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:84867622149
SN - 1000-7555
VL - 28
SP - 14-17+21
JO - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
JF - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
IS - 8
ER -