Abstract
Abstract A new kind of coating consisting of zinc oxide (ZnO)/tetracalcium phosphate (TTCP)/gelatin (Gel) on the PET woven nets is prepared chemically by the method of atomic layer deposition (ALD) and hydrothermal method. The prepared materials are confirmed by XRD and SEM. XRD results show that ZnO and TTCP are well coated on the surface of PET woven nets and ALD-assisted ZnO leads to a surprising coating adhesion of about 8 MPa. Furthermore, SEM results indicate the diameter and morphology of ZnO, TTCP and Gel of PET woven nets. And the water contact angles of PET’s surface are decreased with ZnO, TTCP and Gel of PET woven nets. Moreover, the confocal imaging of NIH3T3 cells shows that the obtained product could promote the cells proliferation, which indicates that the good biocompatibility of the prepared PET/ZnO/TTCP/ Gel woven builds a foundation for their future application. The results aim to obtain an efficient method to modify PET for fabricating an ideal artificial implant meeting the clinical needs, and imply a positive effect in promoting the compatibility of PET for enhancing graft-bone healing after implantation.
Highlights
We develops a novel surface modification based on our research results of the preparation about a nanoscale surface roughness ZnO film by ALD technology changes their matrix adhesion [17,18], which means that the deposition of ZnO with ALD technique is used to obtain a coating on PET woven nets
ZnO is deposited by ALD technology and TTCP was grown by hydrothermal synthesis, in which ZnO deposition is a key step for the strong coating adhesion between PET woven nets and coating
The results show that ZnO nanoparticles can cover on the surface of the PET woven nets, which is used as a medium for further TTCP growth
Summary
Calcium phosphate ceramics is one of important biomedical bioactive ceramic materials, which composed of HA (Ca5(PO4)3(OH)), TTCP (Ca4(PO4)2O), α-TCP (Ca3(PO4)2), β-TCP (Ca3(PO4)2), and so on These calcium phosphate ceramics are always used as a surface modifier for bioactive coating on hard or soft material, including titanium alloy, stainless steel, PET, polyetheretherketone (PEEK), and so on, from some strategies of plasma spray, sol-gel, electrochemical deposition, etc. A novel PET/ZnO/TTCP/Gel woven net is prepared, which shows a good adhesion between the coating and PET woven nets of about 8 MPa. To be specific, the current study is carried out in terms of two folds: [1] to obtain an efficient method to modify PET for fabricating an ideal artificial implant meeting the clinical needs, [2] to imply a positive effect in promoting the compatibility of PET for enhancing graft-bone healing after implantation
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