Hyperbranched polymers containing ...

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Title Hyperbranched polymers containing cyclopentadienyliron complexes.
Author(s) Alaa S. Abd-El-Aziz, Sarrah A. Carruthers, Pedro M. Aguiar, Scott Kroeker
Journal Journal of Inorganic and Organometallic Polymers and Materials,
Date 2005
Volume 15
Issue 3
Start page 349
End page 359
Abstract A number of hyperbranched polymers containing cyclopentadienyliron moieties were prepared using the A2+B3 method. The A2 compounds used were common diols, dithiols or dichloroarenecomplexes. B3 compounds included either prepared star-shaped molecules or a purchased triol. The effect of the reaction conditions on the properties of the products was probed. Analysis of the prepared polymers was conducted using 1H and 13C NMR, viscometry, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Viscometry values were generally found to be low, in the range of 0.175–0.300 dl/g. TGA showed losses starting at approximately 230°C and ending at 280°C, corresponding to the decomposition of the cyclopentadienyliron moiety. Degradation of the polyether backbone was found to occur starting at 390–567°C. Glass transition temperatures were found to be between 60 and 134°C, whereas melting temperatures ranged from 155 to 190°C.
DOI 10.1007/s10904-005-7876-3

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