Production method of polylactic acid-trimethylene carbonate nano-fiber film

A technology of methyl carbonate and nanofibers, which is applied in fiber treatment, spinning solution preparation, textiles and papermaking, etc. It can solve the problems of low shape transition temperature, low shape recovery rate, low shape recovery rate of polylactic acid, and unsuitability. To achieve the effect of solving stress shielding
CN103397477AInactive Publication Date: 2013-11-20DONGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGHUA UNIV
Publication Date
2013-11-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a production method of polylactic acid-trimethylene carbonate nano-fiber film. The method includes: dissolving PDLLA-PTMC (poly-DL-lactic acid and poly trimethylene carbonate) into organic solvent to obtain spinning dope, performing electrospinning, collecting fiber film, and vacuum-drying to obtain the polylactic acid and trimethylene carbonate nano-fiber film. The PDLLA-PTMC is 10%-25%w / w in the spinning dope in terms of concentration. The produced nano-fiber film is shape memory film featuring imitated natural extracellular matrix, and can provide cells with an ideal microenvironment for growth, proliferation and differentiation.
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Description

technical field

[0001] The invention belongs to the field of preparation of shape memory polymer materials, in particular to a preparation method of polylactic acid-trimethylene carbonate nanofiber film. Background technique

[0002] Bone injury is the most common type of tissue injury. At present, there are many methods for repairing bone tissue injury, but for large bone injury, bone transplantation is the best treatment method. In recent years, the development of tissue engineering has changed the development concept of bone graft materials, and the concept of tissue engineered bone triggered by it has expanded the field of bone graft materials. However, the currently developed rigid bone materials and flexible materials that can be applied to bone tissue repair have some problems. For example, the elastic modulus of rigid bone tissue repair materials is much larger than that of normal bone, so that it bears most of the bone during the fixation process. stress, resulting...

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
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