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- W51787279 abstract "In this work, the polymerization of 5-vinil-2-norbornene was studied making use of heterogeneous catalysts Ziegler-Natta type supported on magnesium chloride (MgCl2) and aluminium phosphate (AlPO4). Two catalytic systems, TiCl4-AlCIEt2/MgCl2 and TiCl4-AlCIEt2/AlPO4, were used and both were modified with ethyl benzoate to study his influence as internal and external electrons donors. The supports were characterized by scanning electron microscopy (SEM) and energy-dispersive X-Ray spectroscopy (EDS). The catalysts were analysed by Fourier transform infrared spectroscopy (FT-IR), SEM and Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES), which was used to determine titanium quantity. The synthesized polymers were studied by FT-IR, SEM, thermogravimetric analysis (TGA) and nuclear magnetic resonance (RMN1H). The polymerization reactions were carried out under inert atmosphere, with a molar ratio (Al/Ti) of 92 at 60oC for two hours. The results show that the prepared catalysts generated a reply effect in the produced polymers. The experience of synthesizing the poly(5-vinil-2-norbornene) was interesting enough because of this polymer turned out to be a thermoplastic one, which shows a temperature where it can be moulded without coming to the decomposition." @default.
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- W51787279 date "2011-01-01" @default.
- W51787279 modified "2023-09-26" @default.
- W51787279 title "Síntesis del poli(5-vinil-2-norborneno) mediante polimerización tipo Ziegler-Natta" @default.
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