Which Polyesters Can Mimic Polyethylene?


Dateien zu dieser Ressource

Dateien Größe Format Anzeige

Zu diesem Dokument gibt es keine Dateien.

STEMPFLE, Florian, Patrick ORTMANN, Stefan MECKING, 2013. Which Polyesters Can Mimic Polyethylene?. In: Macromolecular Rapid Communications. 34(1), pp. 47-50. ISSN 1022-1336. eISSN 1521-3927. Available under: doi: 10.1002/marc.201200611

@article{Stempfle2013-01-11Which-24333, title={Which Polyesters Can Mimic Polyethylene?}, year={2013}, doi={10.1002/marc.201200611}, number={1}, volume={34}, issn={1022-1336}, journal={Macromolecular Rapid Communications}, pages={47--50}, author={Stempfle, Florian and Ortmann, Patrick and Mecking, Stefan} }

Ortmann, Patrick 2013-08-26T14:48:24Z 2013-08-26T14:48:24Z terms-of-use Self-metathesis of erucic acid by [(PCy<sub>3</sub>)(η-C-C<sub>3</sub>H<sub>4</sub>N<sub>2</sub>Mes2)Cl<sub>2</sub>Ru = CHPh] (Grubbs second- generation catalyst) followed by catalytic hydrogenation and purification via the ester yields 1,26-hexacosanedioate (>99% purity). Polyesterification with 1,26-hexacosanediol, generated from the diester, affords polyester-26,26, which features a T<sub>m</sub> of 114 °C (T<sub>c</sub> = 92 °C, ΔH<sub>m</sub> = 160 J g<sup>−1</sup>). Ultralong-chain model polyesters-38,23 (T<sub>m</sub> = 109 °C) and −44,23 (T<sub>m</sub> = 111 °C), generated via multistep procedures including acyclic diene metathesis polymerization, underline that melting points of such aliphatic polyesters do not gradually increase with methylene sequence chain length. Available data suggest that to mimic linear polyethylenes thermal properties, even longer sequences, amounting to at least four times a fatty acid chain, fully incorporated in a linear fashion are required. Mecking, Stefan Stempfle, Florian Which Polyesters Can Mimic Polyethylene? Marcomolecular Rapid Communications ; 34 (2013), 1. - S. 47-50 Mecking, Stefan 2013-01-11 Stempfle, Florian eng Ortmann, Patrick

Das Dokument erscheint in:

KOPS Suche


Mein Benutzerkonto