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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 the problem that it is difficult to get rid of temporary shape or permanent shape

Active Publication Date: 2021-08-20
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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  • Biodegradable asynchronous response polymalic acid active deformation material
  • Biodegradable asynchronous response polymalic acid active deformation material
  • Biodegradable asynchronous response polymalic acid active deformation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The polymalic acid that mass ratio is 0.5:1:2, the polycaprolactone of polycaprolactone and 4-methylumbelliferyl ketone single-capped polycaprolactone are ready for use, first three are dropped in the reactor, pressure (vacuum degree) is negative pressure: 300Pa, temperature is 130°C, and reaction time is 24h, a preliminary sample sheet can be obtained, and its infrared spectrum is as follows figure 1 shown. Place it under 365nm ultraviolet light at 70°C, expose some areas of the sample sheet to ultraviolet light for irradiation, and adjust the irradiation time of different areas, respectively 60min, 120min and 240min, after the irradiation is over 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] Using the same steps as in Example 1, only the mass ratio of polymalic acid, polycaprolactone and 4-methylumbelliferone mono-capped polycaprolactone was changed, as shown in Table 1 below.

[0026] Table 1

[0027]

Embodiment 13 to 14

[0029] Adopt the same step as embodiment 1, only change vacuum degree, see table 2 below, the infrared spectrogram of gained sample is as follows figure 2 as shown, figure 2 It shows that changing the degree of vacuum does not change the structure of the polymer.

[0030] Table 2

[0031] Vacuum Example 13 10Pa Example 14 2000Pa

[0032] .

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Abstract

The invention discloses a biodegradable asynchronous response polymalic acid active deformation material, which relates to the technical field of biological materials. Polymalic acid, polycaprolactone and 4-methylumbelliferone single-terminated polycaprolactone are subjected to an esterification reaction to prepare the polymer, and then the biodegradable asynchronous response polymalic acid active deformation material is obtained through ultraviolet radiation and stretching fixation processes, and the biodegradable asynchronous response polymalic acid active deformation material is excellent in performance, easy to manufacture and convenient to use.

Description

technical field [0001] The invention relates to the field of polymer synthesis, in particular to a biodegradable asynchronous response polymalic acid active deformation material. Background technique [0002] For artificially deformable materials, the spatially uniform network guarantees a mechanically uniform state when deformation is triggered. To diversify deformation modalities, especially to achieve nonlinear deformation, networks with spatial heterogeneity are usually required. Indeed, the spatial heterogeneity of active components acts as a deformation strategy that has been preserved in nature over billions of years of biological evolution. This gives the creatures their own specific biological structure, so each one exhibits its own unique shapeshifting abilities. This approach has been used to fabricate artificially deformable materials with nonlinear deformation capabilities in many engineering applications. Spatial network heterogeneity is constructed using a ...

Claims

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Application Information

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IPC IPC(8): C08G81/00
CPCC08G81/00
Inventor 吴德峰仇亚昕
Owner YANGZHOU UNIV
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