-irradiated
UHMWPE resin powder blend with vitamin E (p 1097-1103) Journal of Biomedical Materials Research 88A #4 (2009)
Abstract
Ultra High MolecularWeight Polyethylene
UHMWPE
8/30/2008
Ultra high molecular weight polyethylene (UHMWPE), also
known as high-modulus polyethylene (HMPE) or high-performance polyethylene (HPPE),
is a subset of the thermoplastics polyethylene. It has extremely long chains,
with molecular weight umbering in the millions, usually between 2 and 6 million.
The longer chain serves to transfer load more effectively to the polymer
backbone by strengthening intermolecular interactions. This results in a very
tough material, with the highest impact strength of any thermoplastic presently
made. It is highly resistant to corrosive chemicals, with exception of oxidizing
acids. It has extremely low moisture absorption, has a very low coefficient of
friction, is self-lubricating, and is highly resistant to abrasion abrasion (15
times more resistant to abrasion than carbon steel). Its coefficient of friction
is significantly lower than that of nylon and acetal, and is comparable to that
of Teflon, but UHMWPE has better abrasion resistance than Teflon. It is
odorless, tasteless, and nontoxic.”
Wikipedia:
http://en.wikipedia.org/wiki/Dyneema (11/3/2008)
Warning: Sometimes the older links no longer work. Go to the US Patent Patent number search page, copy the Patent number into the search box and search. For the articles, use your browser to go the Journal site.
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Notes
“Polymerisation of UHMWPE was commercialised in the 1950s by Ruhrchemie AG, which changed names over the years; today UHMWPE powder materials are produced by Ticona. UHMWPE is available commercially either as consolidated forms, such as sheets or rods, and as fibers. UHMWPE powder may also be directly molded into the final shape of a product. Because of its resistance to wear and impact, UHMWPE continues to find increasing industrial applications, including the automotive and bottling sectors, for example. Since the 1960s, UHMWPE has also been the material of choice for total joint arthoplasty in orthopedia and spine implants.
UHMWPE fibers,
commercialised in the late 1970s by the Dutch chemicals company DSM, are widely
used in ballistic protection, defense applications, and increasingly in medical
devices as well.
Wikipedia:
http://en.wikipedia.org/wiki/Dyneema (11/3/2008)
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Review Articles
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US Patents
12/30/2008
7,470,459
Ultra high molecular weight polyethylene ballistic structures
12/9/2008
7,462,318
Crosslinked polymeric material with enhanced strength and process for
manufacturing
12/2/2008
7,459,116
Method of manufacturing a ski
11/4/2008
7,445,735
Method of making microporous material
10/7/2008
7,431,874
Methods for making oxidation resistant polymeric material
9/30/2008
7,429,635
Preparation of ultra high molecular weight linear low density polyethylene
9/16/2008
7,425,357
Surface modification of expanded ultra high molecular weight
polyethylene(eUHMWPE) for improved bondability
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Journal Articles
2/27/2009
Production of Ultrahigh-Molecular-Weight Polyethylene/Pristine MWCNT Composites by Half-Titanocene CatalystsUltrahigh molecular weight polyethylene wear
debris inhibits osteoprogenitor proliferation and differentiation in vitro
(p 242-247) Journal
of Biomedical Materials Research 89A #1 (2009)
Abstract
2/20/2009
Improved resistance to wear and fatigue fracture in high pressure
crystallized vitamin E-containing ultra-high molecular weight polyethylene
(1870-1880)
Biomaterials 30 #10 (2009)
2/6/2009
Effects of packaging environments on free
radicals in -irradiated
UHMWPE resin powder blend with vitamin E
(p 1097-1103)
Journal of Biomedical Materials Research 88A #4 (2009)
Abstract
1/23/2009
Design to Modify UHMWPE with Schiff Base Copper Complex for Use as
Tribological Material
(7 – 19) Journal
of Dispersion Science and Technology 30 #1 (2009)
11/21/2008
PREPARATION OF MICROPOROUS ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE (UHMWPE) BY
THERMALLY INDUCED PHASE SEPARATION OF A UHMWPE/LIQUID PARAFFIN MIXTURE
(653 – 657)
Chinese Journal of Polymer Science 26, #6 (2008)
11/7/2008
Study on torsional fretting behavior of UHMWPE
(616-618)
Applied Surface Science 255 #2 (2008)
10/31/1008
Morphology and mechanical properties of
injection-molded ultrahigh molecular weight polyethylene/polypropylene blends
and comparison with compression molding
(p 890-898)
Journal of Applied Polymer Science 111 #2 (2009)
Abstract
New and Simple Staining Method for Visualizing UHMWPE Lamellar Structure in
TEM
(1148 – 1160)
Journal of Macromolecular Science, Part B - Physics 47 #6 (2008)
9/26/2008
Investigation of the ultradrawing properties of gel spun
fibers of ultra-high molecular weight polyethylene/carbon nanotube blends
(p 2538-2548)
Journal of Applied Polymer Science 110 #5 (2008)
Abstract
Yield, creep, and wear properties of ultra high molecular
weight polyethylene processed by high velocity compaction
(p 2579-2585)
Journal of Applied Polymer Science 110 #5 (2008)
Abstract
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Roger D. Corneliussen
Editor
Telephone: 610 883 0055
rcorneliussen@4spe.org
www.maropolymeronline.com
Copyright 2008 by Roger D. Corneliussen