Abstract
Polyetheretherketone (PEEK) biomaterial is a polymer which has been widely used since the early 90s as a material for human bone implant preparations. Nowadays it is increasingly used due to its high biocompatibility and easily modeling, as well as better mechanical properties and price compared to counterparts made of titanium or platinum alloys. In this paper, air low-temperature and pressure plasma was used to enhance PEEK adhesive properties as well as surface sterilization. On the activated polymeric carrier, biologically-active substances have been deposited with the Langmuir-Blodgett technique. Thereafter, the surface was characterized using optical profilometry, and wettability was examined by contact angle measuring. Next, the contact angle hysteresis (CAH) model was used to calculate the surface free energy of the modified surface of PEEK. The variations of wettability and surface free energy were observed depending on the deposited monolayer type and its components.
Highlights
IntroductionIInnttrroodduuccttiioonn PPoollyyaarryylleetthheerrkkeettoonneess (P(APEAKE)Ka)reahriegh-hpiegrhf-opremrafonrcme tahnecremothpelarsmtiocpploalsytmicerpsowlyitmh egrrseatwmitehchagnriecaatl manedchdaineilceacltrainc dprdoipeleercttieriscspurcohpaerstieelsecsturicchalarseesilestcitvriitcya,lcroemsisptrivesitsyiv, ecosmtrpenregstshi,vaensdtreenlagstthic, aanndd eYloaustnicg amnoddYuoleusn
The presented results confirm the formation of Langmuir-Blodgett films on the cold plasma activated PEEK polymer
By using the Chibowski approach based on the contact angle hysteresis values of a given liquid, it was possible to estimate changes in the surface free energy of the biological modified PEEK surfaces
Summary
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