Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Nanofibre morphology control

Abstract:
Rigid aromatic polymers have been shown to give high performance in industrial applications that require demanding operating conditions.

Nanofibre morphology control

Germany | Posted on September 27th, 2012

In newly published research, Kunio Kimura and colleagues report that the morphology of poly(p-oxybenzoyl) precipitates formed by the co-polymerisation of 4-acetoxybenzoic acid with trifunctional co-monomers based on 3,5-diacetoxybenzoic acid (DABA) is significantly influenced by the structure of the co-monomer and the solvent. As part of their research the authors varied the co-monomer, solvent, co-polymer ratio, temperature of polymerisation, and concentration. The multitude of conditions gives rise to fibrils, needles, spheres, spheres with needle-like structures on the surface, and nanofibre networks. The article will be highlighted on the cover of the forthcoming special issue on fibres of the Journal of Applied Polymer Science.

Nanofibre networks are widely investigated because of their potential to be used for protective clothing, high performance filters, and as high-strength fillers for polymer composites. Many nanofibre networks are fabricated by electrospinning; however, the nature of rigid-rod polymer structures means they are often not soluble in solvents required for this process. Here the researchers used the alternative method of reaction-induced phase separation during isothermal solution polymerisation. This technique circumvents the problem of insolubility because the morphology is created by the phase-separation of the oligomers.

Of the co-monomers used, only polymerisation with DABA itself produces nanofibre networks. These interconnected structures resemble non-woven fabrics prepared by more conventional methods. Alternative polymerisation conditions instead produce differently shaped precipitates, such as the jellyfish-like aggregates shown below.

The networks are composed of fibrillar crystals connected to each other at nodal points with the poly(p-oxybenzoyl) molecules aligned along the long direction of the crystals. The number of fibres grown from one nodal point, the distance between connected nodal points, the average fibre length and the average number of connected nodal points can all be varied by changing the concentration.

The study provides important insight into nanofibre network formation. This, combined with the excellent thermal stability and the ability to control the structure of the nanofibre networks, should prove valuable for non-woven fabric applications.

####

For more information, please click here

Copyright © Wiley-VCH Materials Science Journals

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Related News Press

News and information

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

MEMS & Sensors Technology Showcase: Finalists Announced for MEMS Executive Congress US 2014 October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

Discoveries

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Materials/Metamaterials

Researchers patent a nanofluid that improves heat conductivity October 22nd, 2014

Materials for the next generation of electronics and photovoltaics: MacArthur Fellow develops new uses for carbon nanotubes October 21st, 2014

Super stable garnet ceramics may be ideal for high-energy lithium batteries October 21st, 2014

Could I squeeze by you? Ames Laboratory scientists model molecular movement within narrow channels of mesoporous nanoparticles October 21st, 2014

Announcements

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

Advancing thin film research with nanostructured AZO: Innovnano’s unique and cost-effective AZO sputtering targets for the production of transparent conducting oxides October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Industrial

Researchers patent a nanofluid that improves heat conductivity October 22nd, 2014

New Nanocomposites Help Elimination of Toxic Dyes October 15th, 2014

Perpetuus Carbon Group Receives Independent Verification of its Production Capacity for Graphenes at 140 Tonnes per Annum: Perpetuus Becomes the First Manufacturer in the Sector to Allow Third Party Audit October 7th, 2014

Bilbao (Spain) to welcome 1500 delegates at international event: ImagineNano 2015 and Graphene 2015 under the same roof October 2nd, 2014

NanoNews-Digest
The latest news from around the world, FREE





  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE