Synthesis of post-metallocene catalyst and study of its olefin polymerization activity at room temperature in aqueous solution followed by prediction of yield
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In the research work presented here, the following work has been carried out: (1) Synthesis of the post-metallocene complex (2) Investigation of its olefin polymerization activity at room temperature in aqueous solution (3) Characterizations to verify the synthesized catalyst (4) Calculation of the yield of the synthesized polymer by varying the moles/amount of catalyst, co-catalyst, and monomer (5) Prediction of an appropriate proportion of catalyst, co-catalyst, and monomer, which can result in maximum yield. The polymer sample has also been characterized by different instrumental techniques viz. 1H NMR spectroscopy and dynamic light scattering (DLS) to investigate the properties of the polymer. Moreover, for identifying the best combination of complexes, response surface methodology has been adopted. From the analyses, a safe zone has been predicted, which can result in optimum yield. The obtained zone has been validated by performing more experiments. From the results, it has been perceived that the developed methodology has the capability to predict the suitable amount of complexes to be taken so that the yield is maximum.
KeywordsNon-metallocene catalyst Early transition metal Aqueous polymerization Polymethyl methacrylate Response surface methodology
The author confirms that the research work has not been funded or sponsored by any organization in any manner.
- 10.De SK, Sharma K, Sharma C (2018) Synthesis and catalytic performance of a new post-metallocene titanium complex having asymmetric tetradentate [ONSO]-type amino acid-based chelating ligand for acrylate polymerization at room temperature in aqueous emulsion. Colloid Polym Sci:1–13Google Scholar
- 15.Gates DP, Svejda SA, Oñate E, Killian CM, Johnson LK, White PS, Brookhart M (2000) Synthesis of branched polyethylene using (α-diimine) nickel (II) catalysts: influence of temperature, ethylene pressure, and ligand structure on polymer properties. Macromolecules 33(7):2320–2334CrossRefGoogle Scholar
- 22.Yoshida Y, Matsui S, Takagi Y, Mitani M, Saito J, Ishii S-i, Nakano T, Tanaka H, Kashiwa N, Fujita T (2003) 132 PI catalysts: new titanium complexes having two pyrrolide-imine chelate ligands for olefin polymerization. In: Stud Surf Sci Catal, vol 145. Elsevier, pp 521–522Google Scholar
- 23.Yoshida Y, Saito J, Mitani M, Takagi Y, Matsui S, Ishii S-i, Nakano T, Kashiwa N, Fujita T (2002) Living ethylene/norbornene copolymerisation catalyzed by titanium complexes having two pyrrolide-imine chelate ligands. Chem Commun (12):1298–1299Google Scholar
- 30.Iwashita A, Makio H, Fujita T (2011) Phenoxy–imine group 4 metal complexes for olefin (co) polymerization including polar monomer copolymerization. Olefin Upgrading Catalysis by Nitrogen-based Metal Complexes II Springer:1–38Google Scholar
- 35.De SK, Bhattacharjee M (2013) Titanium (IV) nonmetallocene complex catalyzed aqueous homopolymerization and copolymerization of styrene and methyl methacrylate: an environmentally friendly approach to ultrahigh molecular weight polymer nanoparticles. J Polym Sci A Polym Chem 51(7):1540–1549CrossRefGoogle Scholar
- 49.Montgomery DC (2008) Design and analysis of experiments. John Wiley & SonsGoogle Scholar