Published Date
Received 25 June 2016, Revised 4 September 2016, Accepted 13 September 2016, Available online 13 September 2016
Author
Highlights
Abstract
The aim of this study was to provide a convenient surface modification method for polyurethane (PU) membrane and evaluate its influence on hydrophilicity, antibacterial activity and cell functions, which are the most important factors for wound dressings. For this purpose, chitooligosaccharide (COS) was modified onto the surface of PU membrane based on the self-polymerization of dopamine (DOPA). Surface composition, morphology, hydrophilicity and surface energy of the original and modified PU membranes were characterized. Surface roughness and hydrophilicity of the PU membrane were obviously increased by modified with polydopamine (PDOPA) and COS. Antibacterial experiment against Escherichia coli and Staphylococcus aureus indicated that antibacterial activity of PU membrane increased only slightly by modified with PDOPA, but increased significantly by further modified with COS. Cells culture results revealed that COS-functionalized PU membrane is more beneficial to the adhesion and proliferation of NIH-3T3 cells compared to the original and PDOPA-modified PU membranes.
For further details log on website :
http://www.sciencedirect.com/science/article/pii/S0144861716310906
Received 25 June 2016, Revised 4 September 2016, Accepted 13 September 2016, Available online 13 September 2016
Author
- a Department of Material Science and Engineering, Jinan University, Guangzhou 510632, PR China
- b Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Guangzhou 510632, PR China
Highlights
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- A unique surface design was developed for PU membrane in this study.
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- The hydrophilicity of PU membrane improved when modified with PDOPA and COS.
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- COS-modified PU membrane favors NIH-3T3 cells adhesion and proliferation.
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- Antibacterial activity of PU membrane increased by modification with COS.
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- This study reveals the potential of the COS-coated PU membrane as wound dressings.
Abstract
The aim of this study was to provide a convenient surface modification method for polyurethane (PU) membrane and evaluate its influence on hydrophilicity, antibacterial activity and cell functions, which are the most important factors for wound dressings. For this purpose, chitooligosaccharide (COS) was modified onto the surface of PU membrane based on the self-polymerization of dopamine (DOPA). Surface composition, morphology, hydrophilicity and surface energy of the original and modified PU membranes were characterized. Surface roughness and hydrophilicity of the PU membrane were obviously increased by modified with polydopamine (PDOPA) and COS. Antibacterial experiment against Escherichia coli and Staphylococcus aureus indicated that antibacterial activity of PU membrane increased only slightly by modified with PDOPA, but increased significantly by further modified with COS. Cells culture results revealed that COS-functionalized PU membrane is more beneficial to the adhesion and proliferation of NIH-3T3 cells compared to the original and PDOPA-modified PU membranes.
For further details log on website :
http://www.sciencedirect.com/science/article/pii/S0144861716310906
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