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Biocompatible piezoelectric porous membrane material and preparation method thereof

A Biocompatible, Porous Membrane Technology

Active Publication Date: 2018-12-21
HARBIN INST OF TECH -WEIHAI INNOVATION PARK WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the piezoelectric materials used at this stage are ceramic materials, while the polymer piezoelectric materials mainly use polyvinylidene fluoride. These materials are difficult to degrade and have poor biocompatibility, making piezoelectric materials unable to be used in the field of bioengineering.

Method used

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  • Biocompatible piezoelectric porous membrane material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A biocompatible piezoelectric porous membrane material is prepared, comprising the following steps:

[0033] (1) Weigh according to the required parts by weight: 80 parts of L-polylactic acid, 5 parts of polyhydroxybutyrate, 1 part of gelatin, 1 part of tricalcium phosphate, 5 parts of tourmaline powder, 1 part of montmorillonite, porogen Potassium chloride 5 parts. The molecular weights of poly-L-lactic acid and polyhydroxybutyrate are 5-1 million respectively; tricalcium phosphate is a nano-scale white powdery solid; the particle size of tourmaline powder is 1-10 μm.

[0034] (2) Add the gelatin weighed in step (1) into hot water at 70°C for the first time to stir and dissolve until mixed evenly, then add the tricalcium phosphate weighed in step (1), and then stir and mix for the second time After uniformity, separate and dry to obtain organic film-coated tricalcium phosphate.

[0035] (3) Add the L-polylactic acid and polyhydroxybutyrate weighed in the step (1) int...

Embodiment 2

[0040] A biocompatible piezoelectric porous membrane material is prepared, comprising the following steps:

[0041] (1) Weigh according to the required parts by weight: 100 parts of L-polylactic acid, 20 parts of polyhydroxybutyrate, 20 parts of gelatin, 20 parts of tricalcium phosphate, 20 parts of tourmaline powder, 10 parts of montmorillonite, porogen 40 parts of sucrose. The molecular weights of poly-L-lactic acid and polyhydroxybutyrate are 5-1 million respectively; tricalcium phosphate is a nano-scale white powdery solid; the particle size of tourmaline powder is 1-10 μm.

[0042] (2) Add the gelatin weighed in step (1) into hot water at 100°C for the first stirring and dissolving until it is evenly mixed, then add the tricalcium phosphate weighed in step (1), and then stir and mix for the second time After uniformity, separate and dry to obtain organic film-coated tricalcium phosphate.

[0043] (3) adding the L-polylactic acid and polyhydroxybutyrate weighed in the st...

Embodiment 3

[0048] A biocompatible piezoelectric porous membrane material is prepared, comprising the following steps:

[0049] (1) Weigh according to the required parts by weight: 85 parts of L-polylactic acid, 10 parts of polyhydroxybutyrate, 8 parts of gelatin, 8 parts of tricalcium phosphate, 9 parts of tourmaline powder, 4 parts of montmorillonite, porogen Sodium alginate 21 parts. The molecular weights of poly-L-lactic acid and polyhydroxybutyrate are 5-1 million respectively; tricalcium phosphate is a nano-scale white powdery solid; the particle size of tourmaline powder is 1-10 μm.

[0050] (2) Add the gelatin weighed in step (1) into hot water at 80°C for the first stirring and dissolving until it is evenly mixed, then add the tricalcium phosphate weighed in step (1), and then stir and mix for the second time After uniformity, separate and dry to obtain organic film-coated tricalcium phosphate.

[0051] (3) Add the L-polylactic acid and polyhydroxybutyrate weighed in the step (...

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Abstract

The invention relates to a biocompatible piezoelectric porous membrane material and a preparation method thereof, and solves the technical problems that a piezoelectric material in the prior art is difficult to degrade and poor in biocompatibility. The invention provides the biocompatible piezoelectric porous membrane material which is prepared from the following raw material components in parts by weight: 80 to 100 parts of poly-l-lactic acid, 5 to 20 parts of polyhydroxybutyrate, 1 to 20 parts of gelatin, 1 to 20 parts of tricalcium phosphate, 5 to 20 parts of tourmaline powder, 1 to 10 parts of montmorillonoid, and 5 to 40 parts of a pore-foaming agent. The invention also provides the preparation method thereof. The material is widely applied to the field of membrane materials.

Description

technical field [0001] The invention relates to the field of membrane materials, in particular to a biocompatible piezoelectric porous membrane material and a preparation method thereof. Background technique [0002] With the research of polymer materials, the application fields of membrane materials are becoming more and more extensive, and functional membrane materials with certain functions gradually appear. Functional membrane materials are a class of special properties in electricity, magnetism, light, heat, etc. Or a membrane material that exhibits special functions under its action. [0003] Piezoelectric materials are crystalline materials that generate a voltage between their two ends when pressure is applied. The mechanism of the piezoelectric effect is: the crystal with piezoelectricity has low symmetry. When it is deformed by an external force, the relative displacement of the positive and negative ions in the unit cell makes the positive and negative charge cen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L89/00C08K3/32C08K3/38C08K3/34C08J5/18
CPCC08J5/18C08J2367/04C08J2489/00C08K3/34C08K3/38C08K2003/325
Inventor 张鹏刘康王传杰孙金平陈刚
Owner HARBIN INST OF TECH -WEIHAI INNOVATION PARK WEIHAI
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