Loading...

Preparation and Property Investigation of Propylene- Ethylene Copolymer Graphene Nano Composites

Torabi, Hooman | 2015

655 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46854 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Ramezani Saadatabadi, Ahmad
  7. Abstract:
  8. In this research, polypropylene and propylene- ethylene copolymers were synthesized and propylene- ethylene copolymer Graphene Oxide Nano composites were prepared via solution mixing method. Nano Graphene Oxide sheets were synthesized utilizing modified hummer’s method. Ziegler Natta catalyst system was a complex of Magnesium Ethoxide as the support of the catalyst and Titanium tetra Chloride as the catalyst. Tri iso Butyl Aluminum (TiBA) and Tri Ethyl Aluminum (TEAl) were used as co catalyst. FT-IR and XRD patterns show well oxidation of graphite sheets and fragmentations of them. FESEM images clear the successfulness of copolymerization and also well-dispersion and distribution of Nano sheets within the polymer matrix. MFI analysis results illustrate that presence of co-monomers in matrix for low contents will reduce the melt flow rate of the matrix. DSC analysis certified that presence of co-monomers in matrix for low contents will also reduce the crystallinity and the crystallization temperature of the matrix. This analysis also showed that adding small amount of Nano Graphene Oxide sheets will increase the crystallinity and crystallization temperature of the matrix. Rheological investigations of prepared copolymers indicates that with increasing amount of Ethylene co-monomer will result in reduction of different rheological parameters in comparison to neat polypropylene yet, these results were completely different regarding to propylene – 1butene copolymers. These result also clear improvements in such viscoelastic parameter as storage modulus, loss modulus, and complex viscosity-to name but a few- with increasing the Graphene Oxide Nano sheets
  9. Keywords:
  10. Nanocomposite ; Copolymerization ; Graphene Oxide ; Propylene ; Propylene Ethylen Copolymer

 Digital Object List

 Bookmark

No TOC