Chain Dynamics of Ultrahigh Molecular Weight Polyethylene Composites with Graphene Oxide Nanosheets.
Chain Dynamics of Ultrahigh Molecular Weight Polyethylene Composites with Graphene Oxide Nanosheets.
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超高分子量聚乙烯与氧化石墨烯纳米片复合材料的链动力学。
DOI:
10.1021/acsmacrolett.1c00007
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发表时间:
2021
影响因子:
7.015
通讯作者:
Martin-Fabiani I
中科院分区:
文献类型:
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作者:
Martin-Fabiani I
We investigate the melt chain dynamics of ultrahigh molecular weight polyethylene (UHMWPE) and its composites with graphene oxide (GO) nanosheets by means of neutron spin echo spectroscopy. For the GO concentrations explored, we observe hindered chain dynamics with respect to the pure UHMWPE. We propose a model where a fraction of the polymer is immobilized on top and at the bottom of GO sheets. This model enables us to provide a microscopic measurement of the adsorbed and free polymer fractions, as well as the thickness of the adsorbed layer. Our experiments provide experimental nanoscopic evidence of GO hindering entanglement formation in a polymer melt, a phenomenon that had been observed at the macroscale before via rheological measurements.
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DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
A. Sanz;A. Nogales;I. Puente;M. García;J. Campo;W. Haussler;M. Soccio;N. Lotti;A. Munari;T. Ezquerra
通讯作者:
T. Ezquerra
影响因子:
8.6
作者:
J. Martin;M. Krutyeva;M. Monkenbusch;A. Arbe;J. Allgaier;A. Radulescu;P. Falus;J. Maiz;C. Mijangos;J. Colmenero;D. Richter
通讯作者:
J. Martin;M. Krutyeva;M. Monkenbusch;A. Arbe;J. Allgaier;A. Radulescu;P. Falus;J. Maiz;C. Mijangos;J. Colmenero;D. Richter
影响因子:
5
作者:
Arrighi V;Higgins JS
通讯作者:
Higgins JS
影响因子:
7.015
作者:
Weir, M. P.;Johnson, D. W.;Clarke, N.
通讯作者:
Clarke, N.
影响因子:
5.5
作者:
Ok S;Steinhart M;Serbescu A;Franz C;Vaca Chávez F;Saalwächter K
通讯作者:
Saalwächter K