Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Two-dimensional melting of hard spheres experimentally unravelled after 60 years: First definitive experimental evidence of two-dimensional melting of hard spheres April 21st, 2017

National Conference on Nanomaterials, (NCN-2017) April 21st, 2017

NanoMONITOR shares its latest developments concerning the NanoMONITOR Software and the Monitoring stations April 21st, 2017

Nanomechanics, Inc. Unveils New Product at ICMCTF Show April 25th: Nanoindentation experts will launch the new Gemini that measures the interaction of two objects that are sliding across each other not merely making contact April 21st, 2017

Discoveries

Two-dimensional melting of hard spheres experimentally unravelled after 60 years: First definitive experimental evidence of two-dimensional melting of hard spheres April 21st, 2017

Wood filter removes toxic dye from water April 21st, 2017

Rice crew revved for Nanocar Race: Nanocar creator James Tour and team take on international competition with single-molecule marvel April 20th, 2017

Better living through pressure: Functional nanomaterials made easy April 19th, 2017

Materials/Metamaterials

Two-dimensional melting of hard spheres experimentally unravelled after 60 years: First definitive experimental evidence of two-dimensional melting of hard spheres April 21st, 2017

National Conference on Nanomaterials, (NCN-2017) April 21st, 2017

Forge Nano 2017: 1st Quarter Media Update April 20th, 2017

Making Batteries From Waste Glass Bottles: UCR researchers are turning glass bottles into high performance lithium-ion batteries for electric vehicles and personal electronics April 19th, 2017

Announcements

Two-dimensional melting of hard spheres experimentally unravelled after 60 years: First definitive experimental evidence of two-dimensional melting of hard spheres April 21st, 2017

National Conference on Nanomaterials, (NCN-2017) April 21st, 2017

NanoMONITOR shares its latest developments concerning the NanoMONITOR Software and the Monitoring stations April 21st, 2017

Nanomechanics, Inc. Unveils New Product at ICMCTF Show April 25th: Nanoindentation experts will launch the new Gemini that measures the interaction of two objects that are sliding across each other not merely making contact April 21st, 2017

Industrial

Better living through pressure: Functional nanomaterials made easy April 19th, 2017

Rare-earths become water-repellent only as they age March 22nd, 2017

CRMGroup in Belgium uses a Deben three point bending stage in the development of new steel & coated steel products for automotive and other industrial applications March 21st, 2017

Imaging the inner workings of a sodium-metal sulfide battery for first time: Understanding how the structural and chemical makeup of the material changes during the charge/discharge process could help scientists advance battery design for future energy storage needs March 9th, 2017

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