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Solid-state NMR investigation of the structural consequences of plastic deformation in polycarbonate 2: local orientational order

Solid-state NMR investigation of the structural consequences of plastic deformation in polycarbonate 2: local orientational order
Solid-state NMR investigation of the structural consequences of plastic deformation in polycarbonate 2: local orientational order
The effects of plastic deformation on conformation and local packing in polycarbonate have been quantified using polarization-transfer and double-quantum NMR methods. To within experimental precision, the conformational distribution was found to be unaffected by the deformation, whereas small changes in the local packing of molecular segments could be detected. The phenylene ring planes exhibit a tendency of orienting parallel to one another upon deformation, and the pair correlation functions between the molecular segments under study increase in amplitude at short separations. The experimental results are compared to athermal atomistic simulations, and their implications with respect to proposed heuristic models of the process of plastic deformation in polymer glasses are discussed.
6808-6814
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b
Robyr, Pierre
4d848e12-51aa-4cd9-9db2-8e190940a331
Suter, Ulrich W.
bdda87be-157c-4a45-83ea-df448e2225c0
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b
Robyr, Pierre
4d848e12-51aa-4cd9-9db2-8e190940a331
Suter, Ulrich W.
bdda87be-157c-4a45-83ea-df448e2225c0

Utz, Marcel, Robyr, Pierre and Suter, Ulrich W. (2000) Solid-state NMR investigation of the structural consequences of plastic deformation in polycarbonate 2: local orientational order. Macromolecules, 33 (18), 6808-6814. (doi:10.1021/ma0001180).

Record type: Article

Abstract

The effects of plastic deformation on conformation and local packing in polycarbonate have been quantified using polarization-transfer and double-quantum NMR methods. To within experimental precision, the conformational distribution was found to be unaffected by the deformation, whereas small changes in the local packing of molecular segments could be detected. The phenylene ring planes exhibit a tendency of orienting parallel to one another upon deformation, and the pair correlation functions between the molecular segments under study increase in amplitude at short separations. The experimental results are compared to athermal atomistic simulations, and their implications with respect to proposed heuristic models of the process of plastic deformation in polymer glasses are discussed.

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More information

Published date: 10 August 2000
Organisations: Chemistry, Faculty of Natural and Environmental Sciences, Magnetic Resonance

Identifiers

Local EPrints ID: 355584
URI: http://eprints.soton.ac.uk/id/eprint/355584
PURE UUID: 80515310-81a1-4db6-b972-a8ac3576a422
ORCID for Marcel Utz: ORCID iD orcid.org/0000-0003-2274-9672

Catalogue record

Date deposited: 21 Nov 2013 14:23
Last modified: 26 Nov 2019 01:36

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