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Effect of cross-linking ultrahigh molecular weight polyethylene: Surface molecular orientation and wear characteristics
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10.1116/1.2723767
/content/avs/journal/jvsta/25/4/10.1116/1.2723767
http://aip.metastore.ingenta.com/content/avs/journal/jvsta/25/4/10.1116/1.2723767

Figures

Image of FIG. 1.
FIG. 1.

Schematic diagram of sample geometry for the incident polarized soft x-ray beam normal to UHMWPE sample surface with elongation direction parallel to . Also represented is angle made by the incident x-rays with the sample surface. At normal incidence , electric field vector is parallel to the sample surface, and at glancing incidence , is nearly perpendicular to the sample surface.

Image of FIG. 2.
FIG. 2.

Partial-electron-yield NEXAFS spectrum of UHMWPE (GUR 1050) at the carbon -edge taken at normal incidence (solid curve) and at glancing incidence (dashed curve). The predominant peaks are resonance at and C–C at . Also shown is the subtraction , which highlights the C–H and C–C orientations.

Image of FIG. 3.
FIG. 3.

C–H % molecular orientation for the C and X series with different elongation stress conditions is plotted. A linear regression fit is also shown as a solid line for the C series and as a dashed line for the X series.

Image of FIG. 4.
FIG. 4.

C–C % orientation of GUR 1050 D series for parallel (black circles) and perpendicular (gray open squares) to the wear direction with respect to gamma radiation dosage. A linear regression fit is also represented by solid lines.

Tables

Generic image for table
TABLE I.

List of samples of UHMWPE (GUR 1050) studied using NEXAFS method. Various processing methods and wear/stress conditions with % C–C orientation from NEXAFS are also indicated.

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/content/avs/journal/jvsta/25/4/10.1116/1.2723767
2007-07-02
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of cross-linking ultrahigh molecular weight polyethylene: Surface molecular orientation and wear characteristics
http://aip.metastore.ingenta.com/content/avs/journal/jvsta/25/4/10.1116/1.2723767
10.1116/1.2723767
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