ISSN 1438-7492
Elisabeth Giebel and Andreas Greiner
Article first published online: 1 JUN 2012 | DOI: 10.1002/mame.201290017
Cover: The cover shows the concept for the preparation of water-stable, strong fibers by electrospinning of aqueous polymer dispersions. Dispersions with minimum film-forming temperatures, below processing temperature, yield compact fibers consisting of merged particles. Disintegration of fibers is prevented by photo-cross-linking after electrospinning. Further details can be found in the article by E. Giebel, and A. Greiner* on page 532.
Masthead
Article first published online: 1 JUN 2012 | DOI: 10.1002/mame.201290018
Contents
Macromol. Mater. Eng. 6/2012 (pages 487–490)
Article first published online: 1 JUN 2012 | DOI: 10.1002/mame.201290016
Essay
New Trends in High-Performance Fibers and Fiber Technology (pages 491–492)
Michael R. Buchmeiser
Article first published online: 8 MAY 2012 | DOI: 10.1002/mame.201200031
Reviews
Carbon Fibers: Precursors, Manufacturing, and Properties (pages 493–501)
Erik Frank, Frank Hermanutz and Michael R. Buchmeiser
Article first published online: 10 MAY 2012 | DOI: 10.1002/mame.201100406
The basics and fundamentals of carbon fiber synthesis are highlighted, particularly focusing on polyacrylonitrile-, pitch-, and lignin-derived carbon fibers. For these, the key issues in terms of precursor copolymer composition, spinning, stabilization, and carbonization are summarized. Where feasible, structure–property relationships are presented.
Ceramic Filament Fibers – A Review (pages 502–522)
Dirk Schawaller, Bernd Clauß and Michael R. Buchmeiser
Article first published online: 11 MAY 2012 | DOI: 10.1002/mame.201100364
Ceramic fibers are essential components of new high-temperature-resistant lightweight materials. The production routes of ceramic filament fibers are complex, and in most cases polymeric components are key factors for fiber spinning. Either organic polymers are used as additives in the spinning dopes for oxide ceramic fibers or inorganic polymers are the precursors for the production of non-oxide fibers.
Full Papers
Penchom Photjanataree, Zheng Liu and Frank Ralph Jones
Article first published online: 11 MAY 2012 | DOI: 10.1002/mame.201100341
Using time-of-flight secondary-ion mass spectrometry (ToF-SIMS) imaging, a semi-interpenetrating network is shown to form between an allylamine/1,7-octadiene plasma copolymer on a model glass surface and an epoxy resin, which simulates the interphase in a fiber composite and explains the stress transfer micromechanics of fragmentation of single embedded filaments with different coatings.
Elisabeth Giebel and Andreas Greiner
Article first published online: 10 MAY 2012 | DOI: 10.1002/mame.201100401
A highly versatile method for the preparation of high-quality electrospun nanofibers with excellent thermomechanical properties is achievedby electrospinning of water-based acrylate dispersions—green electrospinning. The key to the improved property profile is inter- and intra-particle photo-cross-linking.
Steam Processing of Regenerated Cellulose Fabric in Concentrated LiCl/Urea Solutions (pages 540–549)
Ivana Tatárová, William MacNaughtan, Avinash P. Manian, Barbora Široká and Thomas Bechtold
Article first published online: 9 FEB 2012 | DOI: 10.1002/mame.201100272
Intensive swelling of regenerated cellulose fibres (lyocell and viscose) is observed in concentrated aqueous LiCl/urea solutions at elevated temperature. Processing of fabrics LiCl/urea/water in a superheated steam atmosphere causes dimensional changes and modifies dyestuff sorption. Minor changes in crystallinity are detected by WAXD and FTIR analysis.
Thomas Bahners, Uwe Schloßer and Jochen Gutmann
Article first published online: 9 FEB 2012 | DOI: 10.1002/mame.201100312
Mechanical properties of PA and PET fibers are studied under strain rates up to 200 s−1.The moduli at specific points of the stress–strain curve initially increase with strain rate, but are constant above 50 s−1. Moduli are up to 50% higher than under quasi-static strain. SEM analysis indicates thermal failure of the fibers due to local energy load.
Creep and Failure Time of Aramid Yarns Subjected to Constant Load (pages 559–575)
Henk Knoester, Piet den Decker, Jurriaan van den Heuvel, Niek Tops and Frits Elkink
Article first published online: 18 MAY 2012 | DOI: 10.1002/mame.201100321
The time-to-failure and creep of aramid yarns are systematically investigated. Analysis of creep curves indicates that damage builds up almost linearly during a creep experiment, caused by a slow rate of filament failure. Failure models further predict an acceleration of filament failure towards the end of a creep experiment, which is observed as a rather abrupt failure of the yarn.
Reinforcement of Polymeric Submicrometer-sized Fibers by Microfibrillated Cellulose (pages 576–584)
Giuseppino Fortunato, Tanja Zimmermann, Jörn Lübben, Nico Bordeanu and Rudolf Hufenus
Article first published online: 10 MAY 2012 | DOI: 10.1002/mame.201100408
Reinforced electrospun PEO fibers are developed by introduction of microfibrillated cellulose. It is shown that finely dispersed cellulose network structures are obtained exhibiting a high impact on the mechanical properties of the electrospun fibers. These are determined both on single fibers by AFM as well as on whole non-wovens by macro-tensile testing.
Novel Cellulose/Polymer Blend Fibers Obtained Using Ionic Liquids (pages 585–594)
Denis Ingildeev, Frank Hermanutz, Karl Bredereck and Franz Effenberger
Article first published online: 23 MAY 2012 | DOI: 10.1002/mame.201100432