Method for preparing polylactic porous microball

A technology of porous microspheres and polylactic acid, which is applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of many influencing factors, difficult control of porous structure, difficulty in ensuring the repeatability and quality of porous microspheres, and achieve mild implementation conditions , The effect of simple operation process
CN100388970CInactive Publication Date: 2008-05-21ZHEJIANG UNIV
3 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2008-05-21
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The preparation process of porous polylactic acid microball includes the following steps: dissolving polylactic acid in solvent dichloromethane and adding bad solvent via mixing; dissolving PVA in deionized water to prepare solution, and under stirring, pouring the polylactic acid solution into the PVA solution; volatilizing organic solvent, filtering and washing to obtain the porous polylactic acid microball. The said process is simple and has mild condition, and the obtained porous polylactic acid microball may be used widely in controlled medicine releasing system, micro cell carrier in cell engineering and adhered microball rack in tissue engineering.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for preparing polylactic acid porous microspheres. Background technique

[0002] Polylactic acid has good physical and mechanical properties, non-toxicity, easy processability, biodegradability and in vivo absorbability, so it has important application value in many fields, especially as tissue engineering materials and drug delivery and controlled release. carrier. In the field of biomedical materials, polylactic acid can be prepared into internally compact rods, bone nails, sutures, drug microcarriers and microspheres, etc., or internally loose and porous scaffolds, non-woven fabrics and hollow microspheres etc. Among them, microspheres play a very important role in the field of biomedical materials due to their particularity in structure, variability in performance, and wide range of applications. For example, it can be used as a carrier for the embedding, delivery and controlled release of drugs, genes, polypept...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More