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A biodegradable asynchronous response polymalic acid active deformation material

An active deformation, polymalic acid technology, applied in the field of polymalic acid active deformation materials, can solve problems such as difficulty in getting rid of temporary shapes or permanent shapes

Active Publication Date: 2022-06-28
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the way of changing the shape strongly depends on the programming of the driving control unit or the reconfiguration of the geometry-determined skeleton, so it is difficult to get rid of temporary or permanent shapes that require complex shape manipulations.

Method used

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  • A biodegradable asynchronous response polymalic acid active deformation material
  • A biodegradable asynchronous response polymalic acid active deformation material
  • A biodegradable asynchronous response polymalic acid active deformation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The polymalic acid with mass ratio of 0.5:1:2, polycaprolactone and 4-methylumbelliferone single-terminated polycaprolactone are ready for use, and the three are first put into the reactor, and the pressure (vacuum degree) is negative pressure: 300Pa, the temperature is 130℃, the reaction time is 24h, the preliminary sample sheet can be obtained, and its infrared spectrum is as follows figure 1 shown. It was placed in 365nm ultraviolet light at 70°C, and part of the sample sheet was exposed to ultraviolet light for irradiation, and the irradiation time of different areas was adjusted, respectively, 60min, 120min and 240min. After cooling to room temperature and maintaining a certain stretching length for 60 seconds, a temporary shape can be obtained, and then placed in an environment of 40 °C, the sample sheet can obtain asynchronous autonomous deformation ability.

Embodiment 2 to 12

[0025] The same procedure as in Example 1 was adopted, except that the mass ratio of polymalic acid, polycaprolactone and 4-methylumbelliferone mono-terminated polycaprolactone was changed, as shown in Table 1 below.

[0026] Table 1

[0027]

Embodiment 13 to 14

[0029] Adopt the same steps as Example 1, only change the degree of vacuum, see Table 2 below, the infrared spectrum of the obtained sample is as follows figure 2 shown, figure 2 It shows that changing the degree of vacuum does not change the structure of the polymer.

[0030] Table 2

[0031] degree of vacuum Example 13 10Pa Example 14 2000Pa

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Abstract

The invention discloses a biodegradable asynchronous response polymalic acid active deformation material, which relates to the technical field of biomaterials. Polymalic acid, polycaprolactone and 4-methylumbelliferone single-terminated polycaprolactone are used to obtain the polymer through esterification, and then with ultraviolet radiation and stretching fixation process, a kind of The biodegradable polymalic acid active deformation material with asynchronous response has superior performance, simple manufacture and convenient use.

Description

technical field [0001] The invention relates to the field of polymer synthesis, in particular to a biodegradable polymalic acid active deformation material with asynchronous response. Background technique [0002] For artificially deformed materials, the spatially uniform network guarantees a mechanically uniform state when deformation is triggered. In order to diversify the deformation modes, especially to achieve nonlinear deformation, a network with spatial heterogeneity is usually required. Indeed, the spatial heterogeneity of active components as a deformation strategy has been preserved in nature over billions of years of biological evolution. This gives the creature its own specific biological structure, so each creature displays its unique ability to shapeshift. This approach has been used to fabricate artificially deformable materials with nonlinear deformation capabilities in many engineering applications. The construction of spatial network heterogeneity employ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/00
CPCC08G81/00
Inventor 吴德峰仇亚昕
Owner YANGZHOU UNIV
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