No / Photo-irradiation of poly para-phenylene terephthalamide (PPTA) fibre is normally associated with
deterioration of physical properties. Nonwoven fabrics produced from 100% photo-irradiated PPTA fibres
might therefore be expected to yield fabrics with poorer mechanical properties compared to those
produced from non-irradiated fibres. To test this hypothesis, the bursting strength of hydroentangled
fabrics manufactured from photo-irradiated PPTA fibres was explored. Prior to fabric manufacture, virgin
PPTA staple fibres were photo-irradiated under controlled lighting conditions (xenon short arc lamp with
a luminous flux of 13,000 lm) for 0, 5, 10, 20, 40, 60 and 100 h. The photo-irradiated fibres were then
hydroentangled to produce nonwoven fabrics. Photo-irradiation exposure of PPTA fibre up to 30 MJ m 2
was not found to be detrimental to fabric bursting strength and at irradiation energies of 5e10 MJ m 2 a
small, but statistically significant increase in fabric bursting strength was observed compared to fabrics
manufactured from non-irradiated fibre. This may be linked to a change in the surface and skin properties
of the PPTA photo-irradiated fibres identified by atomic force microscopy (AFM) following photoirradiation.
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/7413 |
| Date | 30 August 2014 |
| Creators | Wright, T.M., Carr, C.M., Grant, Colin A., Lilladhar, V., Russell, S.J. |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Article, Pre-print version |
| Rights | © 2015 Elsevier. Author's pre-print copy reproduced in accordance with the publisher's self-archiving policy. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Polymer Degradation and Stability, 121: 193-199. |
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