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Citation: LU Ling, WANG Ying-Jun, ZHENG Yu-Dong, WU Gang. Hvdrophilicity Improvement of Polyhydroxyalkanoate Films[J]. Chinese Journal of Applied Chemistry, ;2006, 23(1): 22-25. shu

Hvdrophilicity Improvement of Polyhydroxyalkanoate Films

1.
Biomaterials Research Institute, South China University of Technology, Key Laboratory of Specially Functional Materials and Advanced Manufacturing Technology, Ministry of Education, Guangzhou 510641

Corresponding author: WANG Ying-Jun,
Received Date: 27 February 2005
Available Online: 15 May 2005
Fund Project: 国家自然科学基金资助项目(50272021,59932050) (50272021,59932050)"八六三"项目(2003AA205053) (2003AA205053)中国博士后科学基金资助项目(2003033035) (2003033035)广东省十五重大科技专项资助项目(A0302020202,2003A1070102) (A0302020202,2003A1070102)广东省自然科学基金博士科研启动基金资助项目(04300428) (04300428)华南理工大学自然科学基金项目(E5324298) (E5324298)

New biopolymer poly(3-hydroxybutylate-co-hydroxyvalerate) (PHBV) films were treated with oxygen plasma and hydrolyzed under alkaline condition to render them hydrophilicity and cell affinity.The surface composition and elemental chemical state of PHBV films after modification were characterized via XPS, while surface morphologies were observed with SEM, and the growth of bone marrow stromal cells (BMSCs) on the films were also investigated.It was shown that oxygen contents of PHBV films were increased by 5.3% and 2.5%, water contact angles were reduced by 36° and 16.7° respectively after oxygen plasma treatment and hydrolysis, the results suggested the improvement of surface hydrophilicity.After oxygen plasma treatment, 1.5% C-O bonds and 3.5% C-C bonds cleft and carboxyl bonds were generated, while under alkaline condition the ester bonds in PHBV hydrolyzed to form more hydroxyl and carboxyl bonds.Modified PHBV films were favourable for cell growth, especially the films after oxygen plasma treatment.The results have laid the foundation for further surface modification and preparation of three-dimensional PHBV scaffold with good cell affinity.
- PHBV,
- O₂ plasma treatment,
- hydrolysis,
- hydrophilicity
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