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A method for modifying peek surface

A surface modification, polyether ether ketone technology, applied in the direction of coating, etc., can solve the problems of not being able to induce bone-like hydroxyapatite well, limiting the application range of implant materials, and not easy to bond bone tissue. Achieve the effect of improving biological performance, improving biocompatibility, and excellent comprehensive performance

Active Publication Date: 2020-12-11
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the biological activity of PEEK is poor, and the implant cannot induce the formation of bone-like hydroxyapatite well, and it is not easy to bond with bone tissue, which limits its application range as an implant material.
[0003] Since PEEK is chemically inert (Acta Biomaterialia 9(2013) 6177–6187), it is basically not corroded except concentrated sulfuric acid, so there are relatively few studies on the structural modification of PEEK surface.

Method used

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  • A method for modifying peek surface
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  • A method for modifying peek surface

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Embodiment 1

[0043] After the medical PEEK material is polished, it is washed three times with ethanol, acetone, and deionized water; b) Place the magnet in concentrated sulfuric acid, stir in a magnetic stirrer at a speed of 300r / min, and place PEEK in it to react 5min, put the sulfonated PEEK in deionized water, soak for 5min, take it out and dry it naturally; c) put the sulfonated PEEK in deionized water, carry out hydrothermal treatment in a hydrothermal kettle at 120°C for 4h, then take it out Rinse the sample and dry it naturally; d) Put the hydrothermally treated sulfonated PEEK in 12g / L sodium borohydride dimethyl sulfoxide and react in a hydrothermal kettle at 120°C for 0.5h-48h, then take out the sample Rinse and let dry naturally.

[0044] figure 1 It is the SEM photograph of the surface of reduced PEEK after different hydrothermal time treatments in Example 1. (a) PEEK; (b) PEEK hydrothermal reduction treatment 0.5h; (c) PEEK hydrothermal reduction treatment 2h; (d) PEEK hydr...

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Abstract

The invention provides a PEEK (polyether-ether-ketone) surface modification method. The method comprises steps as follows: PEEK is sulfonated with concentrated sulfuric acid, and sulfonated PEEK is obtained; sulfonated PEEK is subjected to reduction treatment with sodium borohydride at the temperature of 80-160 DEG C for 0.5 h or longer.

Description

technical field [0001] The invention relates to a method for modifying the surface of PEEK, specifically, it relates to a method for obtaining a PEEK surface modification layer with a hydroxyl functional group and a different structure after reducing it with sodium borohydride, which belongs to biological The technical field of surface modification of medical polymer materials. Background technique [0002] Polyetheretherketone (PEEK) is a semi-crystalline polymer with a crystallinity of 30-35% and a glass transition temperature of 143°C. As a new type of organic polymer compound, PEEK has the advantages of radiation translucency and elastic modulus between cancellous bone and cortical bone, and has been widely used in the fields of injury, spine, joints and plastic surgery (Biomaterials28 (2007) 4845–4869). However, the biological activity of polyetheretherketone is poor, and the implant cannot well induce the formation of bone-like hydroxyapatite, and it is not easy to b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/12C08J7/14C08J7/04C08G8/28C08L61/16
CPCC08G8/28C08J7/04C08J7/12C08J7/14C08J2361/16
Inventor 刘宣勇孙振杰欧阳丽萍马小涵
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI