Mechanical reinforcement of electrospun poly(vinyl alcohol) by α‐FeOOH nanowires
Source abstract
Abstract
We report the mechanical performance of α‐FeOOH nanowire reinforced poly(vinyl alcohol) (PVA) composite nanofiber mat, fabricated using straightforward aqueous processing methods. Goethite (α‐FeOOH) nanocrystals have a high elastic modulus and –OH rich surface, ensuring strong interactions with hydrophilic polymers and effective reinforcement. Needle‐less electrospinning resulted in alignment of the nanowires along fibre axis, as confirmed by transmittance electron microscopy studies. Produced composite PVA nanofibers containing 10 wt% goethite nanoparticles exhibited an outstanding fivefold increase in Young's modulus and 2.5‐fold improvement of tensile strength compared to mats of neat PVA. The addition of α‐FeOOH had a significant influence on glass transition temperature indicating formation of interphase regions around nanowire inclusions. Observed properties are explained by nanowire grafting in the precursor solution, extensive interactions between the adsorbed PVA chains and the matrix and percolation of interphase regions at 10 wt% α‐FeOOH. POLYM. COMPOS., 39:2461–2468, 2018. © 2016 Society of Plastics Engineers
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Research context
OpenAlex topics: Electrospun Nanofibers in Biomedical Applications · Conducting polymers and applications · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Design Technology, Riga Technical University, Kipsalas 6 Riga LV‐1048 Latvia
Latvian State Institute of Wood Chemistry, Dzerbenes 27 Riga LV‐1006 Latvia
Biomaterials Research Laboratory Riga Technical University, Paula Valdena 3/7 Riga LV‐1048 Latvia
Institute of Physics, University of Tartu, W. Ostwaldi 1 Tartu 50411 Estonia
Institute of Silicate Materials, Riga Technical University, Azenes 14/24 Riga LV‐1048 Latvia
National Institute of Chemical Physics and Biophysics, Akadeemia 23 Tallinn 12618 Estonia
Institute of Chemistry, University of Tartu, Ravila 14a Tartu 50411 Estonia
Institute of Solid State Physics, University of Latvia, Kengaraga 8 Riga LV‐1063 Latvia
Institute of Technical Physics, Riga Technical University, Paula Valdena 3/7 Riga LV‐ 1048 Latvia
Funding
financial support of the Estonian Research Council · Institutional Research Funding Projects
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