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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
5
|
| pubmed:dateCreated |
1994-4-7
|
| pubmed:abstractText |
We developed a preparation method to obtain respirable-sized fractions of para-aramid fibers. The procedure, based on floatability, consists of stirring and subsequent settling of p-aramid pulp in distilled water. Two distinct phases are obtained, with small fibers in the upper part of the suspension, which represents about 33% of the total volume. Optimal results were obtained when 2.0 g pulp was stirred for 15 hr in 800 ml distilled water containing 0.125% ethanol and settled for 5 hr. The mass yield ranged between 0.4 and 0.6%, more than 90% of the particles had an aspect ratio > or = 3:1. The mean fiber length was about 6 microns, and the mean fiber diameter was about 0.4 microns as determined by transmission and scanning electron microscopy. The number of fibers obtained was 4 x 10(6) fibers/micrograms under our standard conditions.
|
| pubmed:commentsCorrections | |
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Oct
|
| pubmed:issn |
0091-6765
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
101
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
414-6
|
| pubmed:dateRevised |
2009-11-18
|
| pubmed:meshHeading | |
| pubmed:year |
1993
|
| pubmed:articleTitle |
A method to obtain a well-defined fraction of respirable para-aramid fibers.
|
| pubmed:affiliation |
Laboratoire de Pathologie Cellulaire et Moléculaire de l'Environnement, INSERM U139, 94010 Créteil, France.
|
| pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|