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Short electrospun polymeric nanofibers reinforced polyimide nanocomposites

Title data

Jiang, Shaohua ; Duan, Gaigai ; Schöbel, Judith ; Agarwal, Seema ; Greiner, Andreas:
Short electrospun polymeric nanofibers reinforced polyimide nanocomposites.
In: Composites Science and Technology. Vol. 88 (14 November 2013) . - 57 - 61.
ISSN 0266-3538
DOI: https://doi.org/10.1016/j.compscitech.2013.08.031

Official URL: Volltext

Abstract in another language

This work highlights the usage of short electrospun fibers for the first time for the preparation of homogeneous polymer nanofiber/polymer composites and the improvement in mechanical properties by an order to magnitude compared to as-electrospun long and continuous nanofibers. Dispersions of short electrospun nanofibers can be processed by liquid processing techniques resulting in nanofiber nonwoyens similar to electrospun nonwovens but is independent from the demands of the electrospinning process is one of the emphasis of this work. The re-formation of electrospun fiber nonwovens by dispersion casting of short electrospun polyimide (PI) nanofibers and the preparation of homogeneous polymer/polymer nanofiber composite films were selected as representative examples for showing the versatility of short electrospun fibers. The self-reinforced PI/PI-short nanofiber composite films were obtained from mixtures of short electrospun PI nanofibers and polyamic acid after imidization. Significant improvement of 53% and 87% in mechanical properties like tensile strength and modulus, respectively in comparison to the neat PI film was observed by using just 2 wt% of short fibers. Parallel experiments were also carried out with long and continuous electrospun PI fibers and amazingly a huge difference was observed. The amount of continuously long fibers required for achieving almost the same strength was much higher i.e. 38 wt% in comparison to the 2 wt% required of short fibers. (C) 2013 Elsevier Ltd. All rights reserved.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Short-fiber composites; Mechanical properties; Scanning electron microscopy (SEM); Electra-spinning; Polyimide
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Research Institutions > Research Centres > Bayreuth Center for Colloids and Interfaces - BZKG
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 10 Mar 2015 12:13
Last Modified: 10 Mar 2015 12:13
URI: https://eref.uni-bayreuth.de/id/eprint/8002