Engineering of Biomaterials by Venina dos Santos Rosmary Nichele Brandalise & Michele Savaris

Author:Venina dos Santos, Rosmary Nichele Brandalise & Michele Savaris
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

5.1.1 Synthetic Polymers Used as Biomaterials

Table 5.1 lists the main synthetic polymers used as biomaterials, their properties, and limitations.Table 5.1Synthetic polymers used as biomaterials [8, 9]

Polymer (Initials)

Properties

Limitation

Ultra High Molecular Weight Polyethylene (UHMWPE)

Mn = 2.000,000–5.000,000 g/mol

Xc = 45%

Abrasion Resistance superior to that of the other thermoplastics, inferior only to alumina,

Good corrosion resistance,

High resistance to cyclic fatigue,

High resistance to tensile fracture,

High chemical resistance,

High hardness,

Low friction coefficient,

Resistant to chemicals: acids, alkalis, solvents, fuels, detergents and oxidants,

Resistant to δ radiation under controlled conditions,

Resistant to the action of ethylene oxide,

Products obtained: in the shape of plates, bars, rods, tubes, or slabs for further finishing by machining,

Due to its resistance to scission can be processed without additives or stabilizers

Subject to degradation by UV radiation and oxygen,

Practically infusible, therefore not processable by conventional methods,

Compression Molding or variations with pressing and extrusion by piston, Ram,

Micro particles formation by wear of parts, followed by inflammation process and loss and deterioration of neighboring tissues, mainly at the bone at which it is anchored leading to pain, loss of function or need of replacement

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.