| 학회 | 한국공업화학회 |
| 학술대회 | 2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 | 19권 1호 |
| 발표분야 | 고분자_포스터 |
| 제목 | In Situ Polymerization of Propylene Using GO-Supported Ziegler-Natta Catalyst with Internal and External Donor. |
| 초록 | Graphene, which is a two-dimensional sp2 carbon material with one atom thickness, has shown great promise in electronic devices, as energy-storage materials, in chemical/bio-sensors, for bio-medical applications, and as nanofillers in composites, due to its excellent electrical, thermal, and mechanical properties and high surface areas. A few examples of chemically modified graphenes showed interesting performances as a catalyst or as a support in catalytic reactions. The highly isotactic PP prepared with GO-supported TiCl4 catalysts by in situ polymerization. The I.I, molecular weight, MWD were influenced by internal donors and external donors. With introduction of internal donor and external donor, the I.I was dramatically improved and the GPC curves are shifted higher molecular weight region. The shift of GPC curve could be ascribed to the internal donor were replaced by the silane compound lead to increase the molecular weight of PP. PP/GO nanocomposites were prepared by using the obtained PP as a master batch with commercial PP using a twin screw mixer. The modulus of PP/GO nanocomposites increased by addition of GO dispersed PP, that is prepared by GO-supported TiCl4 catalysts. Thermal stability of nanocomposites are much higher than that of commercial PP. The in-situ polymerization processes are promising techniques for preparation of well dispersed GO nanocomposites by using GO-supported catalysts. |
| 저자 | 배민기1, 박민정1, 고은빈1, 박병식2, 윤근병1 |
| 소속 | 1경북대, 2한국국제대 |
| 키워드 | ziegler-natta; polypropylene; in situ polymerization; graphene; graphene oxide |
