| Re-orientation of cellulose nanowhiskers in agarose hydrogels under tensile loading. | |
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MedLine Citation:
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PMID: 22295902 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Agarose hydrogels filled with cellulose nanowhiskers were strained in uniaxial stretching under different humidity conditions. The orientation of the cellulose whiskers was examined before and after testing with an X-ray laboratory source and monitored in situ during loading by synchrotron X-ray diffraction. The aim of this approach was to determine the process parameters for re-orienting the cellulose nanowhiskers towards a preferential direction. Results show that a controlled drying of the hydrogel is essential to establish interactions between the matrix and the cellulose nanowhiskers which allow for a stress transfer during stretching and thereby promotes their alignment. Rewetting of the sample after re-orientation of the cellulose nanowhiskers circumvents a critical increase of stresses. This improves the extensibility of the hydrogel and is accompanied by a further moderate alignment of the cellulose nanowhiskers. Following this protocol, cellulose nanowhiskers with an initial random distribution can be re-oriented towards a preferential direction, creating anisotropic nanocomposites. |
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Authors:
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Anayancy Osorio-Madrazo; Michaela Eder; Markus Rueggeberg; Jitendra Kumar Pandey; Matthew James Harrington; Yoshiharu Nishiyama; Jean-Luc Putaux; Cyrille Rochas; Ingo Burgert |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-2-1 |
Journal Detail:
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Title: Biomacromolecules Volume: - ISSN: 1526-4602 ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-2-2 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100892849 Medline TA: Biomacromolecules Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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