Improvement of the Hydrophilicity of Cu/LDPE Composite and its Influence on the Release of Cupric Ions

Abstract:

t is of great importance to improve the hydrophilicity of Cu/LDPE composite, a material for a new type of IUDs (Intrauterine Devices). The aim of the study is not only satisfying the biocompatibility of medical devices implanted in human bodies, but also improving the releasing rate of cupric ions. In this study, various hydrophilic materials (sodium chloride, anhydrous glucose and soluble starch) were added respectively, in order to improve the hydrophilicity of Cu/LDPE composite. The microstructure of Cu/LDPE composite was characterized, moreover, the influence of the addition of these hydrophilic materials on the surface hydrophilicity and the releasing rate of cupric ions of Cu/LDPE composite was studied. The compatibility between three hydrophilic materials and the matrix of LDPE is rather different, which can affect the dispersible uniformity of these additives in Cu/LDPE composite, and the dispersible uniformity of NaCl is the worst among these three hydrophilic materials. The addition of three hydrophilic materials was all beneficial to the improvement of the hydrophilicity of Cu/LDPE composite. Connected holes were formed in Cu/LDPE composite, which provided channels for the infiltration of solution and the diffusion of cupric ions, and improved the releasing rate of cupric ions in the Cu/LDPE composite IUDs.

• Periodical: Materials Science Forum (Volumes 745-746)
• Pages: 46-52
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.745-746.46
• Online since: February 2013
• Authors: Ying Tang, Xian Ping Xia
• Keywords: Cu/LDPE Composite, Cupric Release, IUD, Surface Hydrophilicity

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