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Photochemical Synthesis of polymeric Fiber Coatings and their Embedding in Matrix Material : Morphology and nanomechanical Properties at the Fiber-Matrix Interface

Title data

Kuttner, Christian ; Tebbe, Moritz ; Schlaad, Helmut ; Burgert, Ingo ; Fery, Andreas:
Photochemical Synthesis of polymeric Fiber Coatings and their Embedding in Matrix Material : Morphology and nanomechanical Properties at the Fiber-Matrix Interface.
In: ACS Applied Materials & Interfaces. Vol. 4 (June 2012) Issue 7 . - pp. 3485-3492.
ISSN 1944-8252
DOI: https://doi.org/10.1021/am300576c

Official URL: Volltext

Abstract in another language

In this contribution, we present a three-step pathway to produce a novel fiber coating, study its embedding in epoxy resin and characterize its nanomechanical properties at the interface between fiber and matrix. Inorganic surfaces were sulfhydrylated for subsequent use in thiol-initiated ene photopolymerization. The influence of water on the sulfhydrylation process was studied to find conditions allowing monomolecular deposition. Surface morphology as well as SH-content was evaluated by UV/Vis spectroscopy, atomic force microscopy and spectroscopic ellipsometry. Brush-like polymer layers (PS and PMMA) were introduced by UV-light initiated surface polymerization of vinyl monomers. Polymer growth and morphology were studied. After embedding, the nanomechanics of the interfacial region of the fibers was studied. AFM force spectroscopy allowed the mapping of the stiffness distribution at the cross-section of the composite with high spatial resolution. Elastic moduli were determined by Hertzian contact mechanics. The individual phases of the composite material (fiber, interphase, and matrix) can be clearly distinguished based on their mechanical response. The synthesis, morphology and mechanical properties of an interphase based on a polymeric graft-film swollen with matrix material are shown, and perspectives of these novel coatings for improved matrix-fiber compatibility and interfacial adhesion are discussed.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Thiol-ene; Fiber, Nanomechanics
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Physical Chemistry II - Univ.-Prof. Dr. Andreas Fery
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 05 Dec 2014 09:54
Last Modified: 05 Dec 2014 09:54
URI: https://eref.uni-bayreuth.de/id/eprint/3957