Multi-block polyurethane shape memory high molecule material and preparation method thereof

A technology of polymer materials and polyurethane, applied in the field of shape memory polymer materials and its preparation, can solve the problems of slow degradation of PCL and achieve good biodegradability, high mechanical strength and flexibility
CN101397361AInactive Publication Date: 2009-04-01CHONGQING UNIV +1
4 Cites 23 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2009-04-01
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 invention provides a multi-block polyurethane shape memory polymer material based on lactide and 1, 4-dioxegy cyclohexanone. The polymer material takes hydroxyl terminated poly (lactide-co-1, 4-dioxegy cyclohexanone) as a soft block; a PUU chain segment or uramido chain segment product which is formed by vulcabond and bifunctional micromolecules containing active hydrogen is chosen as a hard block. The temperature of the shape memory is within 20-55 DEG C. The invention further provides the preparation method of the material. The shape memory polymer material based on lactide and 1, 4-dioxegy cyclohexanone provided by the invention integrates good odegradability, biocompatibility, high mechanical strength, flexility and the shape memory performance together. The deformation temperature of the polymer material can be adjusted to be close to human body temperature; therefore, the polymer material is applied to surgical operations or medical appliance implantation materials.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field:

[0001] The invention relates to a biodegradable shape memory polymer material and a preparation method thereof, belonging to the field of biomedical polymer materials. Background technique:

[0002] Shape memory refers to the phenomenon that a product with a certain initial state can automatically return to its original shape under a specific external stimulus after being deformed and shaped. The currently researched shape memory materials mainly include shape memory alloys, ceramics and polymer materials. Among them, shape memory polymer materials can be divided into three categories: temperature-sensitive, light-sensitive and ion-sensitive. For temperature-sensitive shape-memory polymer materials, their shape-memory performance is often determined by the composition, structure and processing technology of the material. Shape memory polymer materials usually contain soft segments and hard segments and have a two-phase separation structure of soft and hard...

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