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TitleNanostructure development in multicomponent polymer systems characterized by synchrotron X-ray scattering
Author(s)Dencheva, Nadya Vasileva
Stribeck, Almut
Denchev, Z.
KeywordsSynchrotron X-ray scattering of polymers
SEM (scanning electron microscopy)
Microfocus X-ray studies
Multicomponent polymer systems
Polymer microcapsules
Issue date2016
JournalEuropean Polymer Journal
CitationDENCHEVA N, STRIBECK A, DENCHEV Z* - Nanostructure Development in Multicomponent Polymer Systems and its Characterization by X-ray scattering, European Polymer Journal, 81:447-469 (2016)
Abstract(s)Modern synchrotron beamlines equipped with two-dimensional detectors and high-flux microfocus devices offer interesting possibilities for polymer characterization. This work presents three synchrotron X-ray studies performed in specific multicomponent polymer systems. In the first study, quantification of transcrystallinity in microfibrillar composites (MFC) by wide-angle X-ray scattering (WAXS) and a direct relation between the mechanical properties of the composites and the thickness of the transcrystalline layers is presented. The second study demonstrates monitoring of nanostructure development under controlled strain in MFC and their precursors by small-angle X-ray scattering (SAXS). A specially developed procedure for data treatment that uses the Chord Distribution Function formalism permitted to prove reversible strain-induced crystallization of matrix material in the MFC materials. In the third study, a 5 5 lm high flux X-ray beam was used to scan in WAXS mode polymer microcapsules (average diameters of 20–50 lm) with polyamide shells in which various solid payloads were incorporated by in-situ polymerization. Exfoliation/intercalation phenomena and local inhomogeneity at micron scale are studied in clay and metal containing polyamide microcapsules that constitute a new platform for the development of polymer hybrids or smart micro devices. It was concluded that relating microscopy and/or mechanical data of various polymer samples to their synchrotron WAXS/SAXS patterns helps to understand the structure–properties relationship in complex polymer systems with controlled composition, morphology and nanostructure.
Publisher version
AccessOpen access
Appears in Collections:IPC - Artigos em revistas científicas internacionais com arbitragem

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