Molecular Characterization of Ultrahigh Molar Mass and Soluble Fractions of Partially Cross-Linked Polyethylenes

$61.20 plus tax (Refund Policy)

Buy Article:


A reliable method is described for analyzing ultrahigh molar mass polyethylene (UHMW-PE) with a weight-average molar mass of 5700 kg/mol and molar mass fractions up to 50,000 kg/mol by size exclusion chromatography (SEC) without molecular degradation as was proved by comparison of on-line and off-line viscometry. The use of low-bleed SEC columns (PLgel 20 µm Mixed-A LS), especially designed for on-line light-scattering detectors, allowed SEC to be coupled to a low-angle laser light-scattering detector without a filter ahead of the light-scattering cell. With this procedure, molded specimens of UHMW-PE, which are used for medical implants, such as hip endoprostheses, containing various amounts of α-tocopherol as a biocompatible stabilizer, were investigated. Furthermore, the effect of sterilization of the samples by -irradiation (60Co, 1.33 MeV, absorbed dose: 25 kGy) was studied with respect to the content of insoluble cross-linked material and the molar mass distribution of the soluble fraction.

Keywords: Low-angle laser light scattering (LALLS); Size exclusion chromatography (SEC); Ultrahigh molar mass polyethylene (UHMW-PE); Viscometry; α-Tocopherol; -Sterilization

Document Type: Research Article


Affiliations: Institut für Chemie der Kunststoffe, Montanuniversität Leoben, Leoben, Austria

Publication date: May 1, 2003

More about this publication?
Related content

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more