The straight-chain segment length distribution in xerogels of UHMWPE, which provide high drawability of gel-derived fibers

A series of ultra‐high‐molecular‐weight reactor powders with different technological prehistory were utilized for obtaining fibers through the gel technology. The fibers prepared from some powders exhibited high draw ratios and good mechanical properties (Young's modulus and tensile stress) but...

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Bibliographic Details
Published in:Journal of applied polymer science 2007-09, Vol.105 (5), p.2984-2987
Main Authors: Pakhomov, P., Galitsyn, V., Khizhnyak, Svetlana, Tshmel, A.
Format: Article
Language:English
Subjects:
gels
polyethylene
Raman spectroscopy
strength
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Summary:A series of ultra‐high‐molecular‐weight reactor powders with different technological prehistory were utilized for obtaining fibers through the gel technology. The fibers prepared from some powders exhibited high draw ratios and good mechanical properties (Young's modulus and tensile stress) but other powders yielded fibers of very low drawability. The low‐frequency Raman study revealed that the straight‐chain‐segment (SCS) length distributions in dried gels prepared from powders of “drawable” group are bimodal, while the gels issued from powders unsuitable for fiber drawing have unimodal length distributions of SCS. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007
ISSN:0021-8995
1097-4628
DOI:10.1002/app.26543