Preparation method of fully biodegradable and biocompatible composite microspheres

A biocompatible and biodegradable technology, applied in the field of preparation of composite microspheres, achieves the effects of simple operation, environmental friendliness and low cost

Inactive Publication Date: 2015-12-09
深圳前海福瑞达科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, using the characteristics of cellulose nanocrystals and the advantages of Pickering emulsions, combined with solvent evaporation technology, can provide a new technical solution and means for the preparation of fully biodegradable and biocompatible composite microspheres, which has not been reported in the literature so far.

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  • Preparation method of fully biodegradable and biocompatible composite microspheres
  • Preparation method of fully biodegradable and biocompatible composite microspheres
  • Preparation method of fully biodegradable and biocompatible composite microspheres

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with specific examples, but the present invention is not limited to the following examples.

[0021] Example:

[0022] (1) The sisal cellulose nanocrystal suspension of 0.1% is the water phase with the mass volume percent concentration, and the pH value of the water phase is adjusted to 2 by the hydrochloric acid solution of 0.1 mol / liter, and is dissolved in polymethyl methacrylate Dichloromethane makes a solution with a mass percentage concentration of 1% as the oil phase, and mixes the two phases according to the water phase / oil phase volume ratio of 5:1. After ultrasonic emulsification, a stable sisal cellulose nanocrystal is obtained. Oil-in-Water Pickering Emulsion.

[0023] (2) the oil-in-water type Pickering emulsion that 2 milliliters of step (1) make of sisal cellulose nanocrystal stabilization is packed into an open glass bottle, then placed in a water bath of 45°C for solvent volatilizatio...

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Abstract

The invention discloses a preparation method for completely biodegradable and biocompatible composite microspheres. An oil-in-water type Pickering emulsion with stable cellulose nanocrystals is prepared based on the reproducibility, biodegradability and biocompatibility of cellulose nanocrystals, and then the completely biodegradable and biocompatible composite microspheres are prepared by a solvent evaporation technology. According to the method provided by the invention, cellulose nanocrystal whiskers prepared from natural plants are low in cost, the operation is simple and large-scale popularization is easy; the composite microspheres prepared according to the method provided by the invention are completely biodegradable and biocompatible and environmental-friendly, and conform to the current idea of development.

Description

technical field [0001] The invention belongs to the technical field of composite microsphere preparation, in particular to a method for preparing a fully biodegradable and biocompatible composite microsphere. Background technique [0002] In order to deal with the problems of energy, resources and the environment in today's world, the development of green, environmentally friendly, renewable and degradable materials has become a hot topic. Cellulose nanocrystals, which can be made from natural plant fibers, are nanomaterials with high aspect ratio, high specific surface area, high strength, recyclable regeneration, biodegradability and biocompatibility. [0003] Pickering emulsion is a kind of emulsion formed by solid particles instead of surfactant as stabilizer. For a long time, Pickering emulsion has been widely used in food, cosmetics and other fields due to its convenience, soap-free characteristics, good stability and excellent mechanical properties. Therefore, it is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/12C08L67/04C08L33/12C08L1/02
Inventor 刘红霞王林冲耿思敏
Owner 深圳前海福瑞达科技有限公司
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