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• W2808033448 abstract "This work explores the synthesis of polybutadiene (PB) with high cis-1,4 unit content and narrow molecular weight distribution using a neodymium-based complex, consisting of neodymium(iii) trifluoromethane sulfonate (Nd(CF3SO3)3) and coordinated with tris(2-ethylhexyl)phosphate (TOP). The complex's composition and structure are characterized by elemental analysis, XPS and FT-IR. Combined with Al(i-Bu)3, a binary catalyst is obtained and then applied to initiate the polymerization of butadiene. Results indicate that the catalyst system displays a high catalyst activity and the product polymer (PB) features a high cis-1,4 content (98.8%) and a remarkably narrow molecular weight distribution (Mw/Mn = 1.32). Compared with PB initiated by the current well-studied catalyst Nd(CF3SO3)3*3TBP/Al(i-Bu)3, the Nd(CF3SO3)3*3TOP allows significantly narrowing the molecular weight distribution of the PB, because the Nd(CF3SO3)3*3TOP is more easily dissolved in hexane. Therefore, butadiene was polymerized in a homogenous system and each monomer's polymerization was initiated in the single molecular state." @default.
• W2808033448 created "2018-06-21" @default.
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• W2808033448 date "2018-01-01" @default.
• W2808033448 modified "2023-10-12" @default.
• W2808033448 title "Synthesis of high <i>cis</i>-1,4 polybutadiene with narrow molecular weight distribution <i>via</i> a neodymium-based binary catalyst" @default.
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• W2808033448 doi "https://doi.org/10.1039/c8ra02656d" @default.
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