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Soft X-ray spectromicroscopic evidence for site-specific nanoscale phase segregation of polyurethane onto a confined surface
Authors:
Kavita
Sharma
(Amity University)
,
Debi
Garai
(Amity University)
,
Ajay
Gupta
(Amity University; University of Petroleum & Energy Studies)
,
Debmalya
Roy
(DMSRDE)
,
N. Eswara
Prasad
(DMSRDE)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
The Journal Of Physical Chemistry C
State:
Published (Approved)
Published:
September 2021
Diamond Proposal Number(s):
24782
Abstract: Synchrotron-based small-angle X-ray scattering and near-edge X-ray absorption fine structure spectromicroscopy have been used to study the phase separation of thermoplastic polyurethane in a confined thin-film geometry. The functional nanomaterials were introduced in a polymer matrix, where the shape and nature of the functional surface were varied to gain insight into the mechanism of aggregation of polyurethane segments enriched with functional moieties. Using soft X-ray scattering it has been established that the two-dimensional flat functional surface displayed higher phase-segregated geometries with a wider distribution of interdomain spacing in comparison to the one-dimensional contour shaped nanofillers. A strong chemical environment dependence has been observed for π–π or electrostatic interactions during the nanoscale phase separation of the polyurethane matrix by X-ray absorption spectromicroscopy. Our results support the fact that soft X-ray-based spectromicroscopy can be exclusively used as a powerful noninvasive technique for the structure–property analysis of polymer nanocomposites.
Journal Keywords: Carbon; Two dimensional materials; Nanocomposites; Carbon nanotubes; Mathematical methods
Subject Areas:
Materials,
Chemistry
Instruments:
I08-Scanning X-ray Microscopy beamline (SXM)
Other Facilities: P08, P03 at PETRA-III
Added On:
27/09/2021 09:32
Discipline Tags:
Surfaces
Physics
Physical Chemistry
Chemistry
Materials Science
Nanoscience/Nanotechnology
Polymer Science
Technical Tags:
Spectroscopy
X-ray Absorption Spectroscopy (XAS)
X-ray Absorption Near Edge Structure (XANES)