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Characterization of surface property of poly(lactide-co-glycolide) after oxygen plasma treatment

Paper ID Volume ID Publish Year Pages File Format Full-Text
13405 853 2004 7 PDF Available
Title
Characterization of surface property of poly(lactide-co-glycolide) after oxygen plasma treatment
Abstract

In this study, poly (lactide-co-glycolide) (PLGA) films were treated by oxygen plasma. The surface structure, topography and surface chemistry of treated PLGA films were characterized by contact angle measurement, scanning electron microscope observation, atomic force microscopy, and X-ray photoelectron spectrum analysis. The cell affinity of the oxygen plasma treated films was evaluated under dynamic conditions by Parallel Plate Flow Chamber (PPFC). The results showed that the hydrophilicity increased greatly after oxygen plasma treatment. High quantities of –C–O groups, such as hydroxyl and peroxyl groups could be incorporated into the surface of PLGA (70/30) by controlling appropriate plasma treatment conditions. Moreover, the oxygen plasma treatment resulted in formation of peaks and valleys on the sample surfaces, and the roughness increased with treatment time. Cells stretched very well and the ability to endure the shear stress was improved greatly after the PLGA (70/30) was modified by appropriate plasma treatment, i.e. under 50 W for 2 or 10 min. However, when the treatment time was increased to 20 min, the percentage of adherent cells on the roughest surface decreased because the content of polar groups incorporated onto the surface decreased. The results showed that improved cell adhesion was attributed to the combination of surface chemistry and surface morphology of PLGA during plasma etching.

Keywords
Plasma; Poly(lactide-co-glycolide) (PLGA); Cell affinity; Shear stress; Tissue engineering
First Page Preview
Characterization of surface property of poly(lactide-co-glycolide) after oxygen plasma treatment
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 25, Issue 19, August 2004, Pages 4777–4783
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering