Abstract
Styrene and ethylene were copolymerized in the presence of a catalytic system based on CpTiCl 3 and methylaluminoxane. 13C-NMR, FTIR, GPC and calorimetric techniques were employed to study the structure of the polymerization product. The 13C-NMR spectrum showed only three resonances which could be assigned to the methylene and methine protons of syndiotactic polystyrene and to the aliphatic carbon of polyethylene. Thus, the polymer was not a true copolymer but a mixture of polystyrene and polyethylene. Two melting endotherms and two molecular weight distributions were observed. In addition, a very low molecular weight (boiling butanone soluble) fraction was isolated. The existence of several polymerization products suggests the presence of more than one active species in the catalyst.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
