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Bacteria cellulose and Hydroxyethyl methacrylate transparency compound material and preparation thereof

A technology of poly(beta-hydroxyethyl methacrylate) and beta-hydroxyethyl methacrylate, which is applied in the field of biomedical materials, can solve the problems of limited application range, poor mechanical properties, reduced transparency, etc., and achieves good biocompatibility , good mechanical properties, high moisture content

Inactive Publication Date: 2008-10-01
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its application is limited due to its poor mechanical properties.
People have used many methods to improve its mechanical properties, such as copolymerization with hydrophobic monomers, fiber reinforcement, etc., but these methods either reduce its water content or reduce its transparency to a certain extent, making it Applications are still limited

Method used

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  • Bacteria cellulose and Hydroxyethyl methacrylate transparency compound material and preparation thereof
  • Bacteria cellulose and Hydroxyethyl methacrylate transparency compound material and preparation thereof

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Embodiment Construction

[0016] Using Acetobacter xylinum as a bioreactor, bacterial cellulose hydrogel film was prepared by fermentation [L.Hong, Y.L.Wang, S.R.Jia, Y.Huang, C.Gao, Y.Z.Wan Hydroxyapatite / bacterial cellulose composites synthesized via a biomimetic route , Materials Letters 60 (2006) 1710-1713.].

[0017] Add 0.2% azobisisobutyronitrile and 0.5% ethylene glycol dimethacrylate to the β-hydroxyethyl methacrylate monomer, and stir at room temperature for 30 minutes to obtain a uniformly mixed solution. Bacterial cellulose membrane (5×1 cm) was immersed in the solution, soaked for 3 days, taken out and put into a polytetrafluoroethylene mold, protected by nitrogen gas, and reacted at 70° C. for 7 hours. After the reaction was finished, the reaction product was taken out and soaked in deionized water for 7 days, and new deionized water was changed every day during the soaking period.

[0018] Wipe off the surface moisture of the obtained product with filter paper, and measure the light tra...

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Abstract

The invention relates to a bacterial cellulose and poly-Beta-hydroxyethyl methacrylate composite material and a preparation method thereof. The bacterial cellulose and poly-Beta-hydroxyethyl methacrylate are adopted as raw materials and the preparation method comprises the steps that a bacterial cellulose film is immersed in a mixed solution of the poly-Beta-hydroxyethyl methacrylate; the film is than taken out and protected with nitrogen gas pumped and then reacts for six to eight hours under the temperature of 70 DEG C and is immersed in deionized water for 1 to 2 weeks. The bacterial cellulose and poly-Beta-hydroxyethyl methacrylate composite material provided by the invention has good mechanical property and transparency, high rate of water content and better shielding effect of ultraviolet light. In addition, the tensile strength of the composite material can achieve 3.5MPa and the equilibrium moisture content is about 36 to 38 percent and the light transmission rate can be up to 75 to 80 percent.

Description

technical field [0001] The invention belongs to the field of biomedical materials, and relates to a transparent composite material of bacterial cellulose and poly-β-hydroxyethyl methacrylate and a preparation method. Background technique [0002] In recent years, with the development of materials science and biomedical technology, the preparation and application of biomedical materials have made great progress. Biomedical materials not only require good biocompatibility, but also a certain mechanical strength. In some specific fields, it is also required to have unique properties, such as artificial cornea materials must have high water content and transparency. Poly(β-hydroxyethyl methacrylate) hydrogel is widely used in artificial skin, wound dressing, artificial ligament, intraocular lens and artificial cornea due to its high water content, transparency, good biocompatibility and other advantages. . However, its application is limited due to its poor mechanical propert...

Claims

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Application Information

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IPC IPC(8): A61L27/40A61L27/60A61L31/12A61F2/28A61F2/82A61F2/06A61F2/02
Inventor 万怡灶张艳森何芳黄远罗红林
Owner TIANJIN UNIV
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