File upload size is currently capped at 500MB. For assistance adding larger files, please contact discovery-access-systems@nottingham.ac.uk
Thumbnail Image

A novel method for the fabrication of porous Poly-Ether-Ether-Ketone using sodium chloride as a porogen

Publication Date
July 15, 2016
Creator
Abstract
A novel technique to manufacture porous Poly-Ether-Ether-Ketone (PEEK) scaffolds via a tapped-packing route of fabrication incorporating rounded salt beads had been investigated. The conventional salt leaching technique has been improved via the tapping-route in manufacturing porous PEEK structure that possesses adequate structural and mechanical properties. Three types of PEEK, Vicote, LT3 and LT1 were used as main material and rounded salt as a porogen. PEEK powder and the rounded salt were mixed in 6:1 mass ratio by applying tapping to 22 mm cylindrical die. 5 g of PEEK/salt beads mixture was packed through 8000 taps. Alternative mixing techniques also involved wet (using sprayed water) and dry mixing routes prior to the compaction. To solidify the PEEK and to obtain free-salt PEEK scaffolds, then sintering, dissolving and drying were applied. The results show that only a combination of the tapping route and the LT1 PEEK could secure porous PEEK scaffolds with acceptable and required characteristics in associated with the pore size range (main pores of (560 + 180) µm and windows of (204 + 41) µm) and shape, good interconnectivity, and homogenous and high porosity > 80%. It was also successfully integrated into a viable spinal PEEK cage implant via injection moulding.
Item Type
ethesis
Thesis Type
PhD
Supervisors
Keywords

porous scaffolds

salt leaching techniq...

scaffold fabrication

Subjects (LC)

RD Surgery

TA Engineering (Gener...

Associated Schools / Departments
Faculty of Engineering
eprints ID
34614
UoN Repository URI
Except where otherwise noted, this item's license is described as
Thumbnail Image
Name

Abdur Siddiq PhD Thesis - Manufacturing Engineering 4170026.pdf

Type

Full-text

Description
Examined. Full version of thesis
Size

13.35 MB

Format

Adobe PDF

Checksum (MD5)

b30a9fcf6f10abf86920d5fbe4622bb3

Thumbnail Image
Name

Abdur Siddiq PhD Thesis(2).pdf

Type

Full-text

Description
Reader
Size

10.29 MB

Format

Adobe PDF

Checksum (MD5)

b740dc4a618d6edff8992bee17b523cb