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Sulfonated modification of willow branch and its application as a bone repair material

A technology of sulfonation modification and bone repair, applied in the direction of wood heating, wood impregnation, bone implants, etc., can solve the problem of insufficient osteogenic ability of switchgrass, and achieve large-scale industrial processing and strong osteogenic ability. , good stability

Active Publication Date: 2022-04-26
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of insufficient bone-forming ability of willow branches, the object of the present invention is to provide a sulfonation modification method of willow branches and its application as a bone repair material. Through the modification method of the present invention, it is expected to promote the formation of willow branches Bone capacity, and can be used stably as an osteosynthetic repair material

Method used

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  • Sulfonated modification of willow branch and its application as a bone repair material
  • Sulfonated modification of willow branch and its application as a bone repair material
  • Sulfonated modification of willow branch and its application as a bone repair material

Examples

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Effect test

Embodiment 1

[0036] The sulfonation modification method of willow branch, its processing step is as follows:

[0037] Take some willow branches, remove leaves and skins, and cut willow branches with a diameter of about 1 mm into samples with a length of 0.5, 1, 2, 3, 4, 5, and 10 cm. Multiple withdrawals of samples are available. The intercepted samples were repeatedly washed with absolute ethanol for 3 times, and then placed in a freeze dryer for freeze-drying. Take out the freeze-dried willow branches and put them into the prepared sulfuric acid with a concentration of 0.2mol / L, and then put them into an oil bath with a temperature of 50°C to make the willow branches undergo sulfonation reaction. The reaction time is recorded as 1h, and the reaction process It needs to be stirred all the time. After 1 hour of reaction, the willow branch that has been carbonized by sulfonation treatment is cooled to room temperature, taken out and washed with distilled water for 3 times, and then the cle...

Embodiment 2

[0040] The sulfonation modification method of willow branch, its processing step is as follows:

[0041] Take some willow branches, remove leaves and skins, and cut willow branches with a diameter of about 1.5mm into samples with a length of 0.5, 1, 2, 3, 4, 5, and 10cm. Multiple withdrawals of samples are available in the . The intercepted samples were repeatedly washed with absolute ethanol for 4 times and then put into a freeze dryer for freeze drying. Take out the freeze-dried willow branches and put them into the prepared sulfuric acid with a concentration of 0.5mol / L, then put them into an oil bath with a temperature of 60°C to make the willow branches undergo sulfonation reaction, record the reaction time as 2h, and the reaction process Constant stirring is required. After reacting for 2 hours, the willow branches that had been carbonized by the sulfonation treatment were cooled to room temperature, taken out and washed with distilled water for 4 times, and then the w...

Embodiment 3

[0044] The sulfonation modification method of willow branch, its processing step is as follows:

[0045] Take some willow branches, remove the leaves and skins, and cut the willow branches with a diameter of about 2.0mm into samples with a length of 0.5, 1, 2, 3, 4, 5, and 10cm. Multiple withdrawals of samples are available in the . The intercepted samples were repeatedly washed with absolute ethanol for 5 times and then put into a freeze dryer for freeze drying. Take out the freeze-dried willow branches and put them into the prepared sulfuric acid with a concentration of 1.0mol / L, then put them into an oil bath at a temperature of 70°C to make the willow branches undergo sulfonation reaction, record the reaction time as 3h, and the reaction process Constant stirring is required. After reacting for 3 hours, the willow branch that had been carbonized by sulfonation treatment was cooled to room temperature, taken out and washed with distilled water for 5 times, and then the wa...

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Abstract

The invention provides a method for sulfonation modification of willow branches. The method comprises the following steps: (1) peeling the willow branches, cutting them into small sections, cleaning them and drying them; (2) drying the dried willow branches Put into 0.2~2.0mol / L sulfuric acid, heat to 50~90℃ and stir for 1~6h, take out after cooling, clean and dry; (3) Put the willow branches treated in step (2) into Soak in 0.1-0.5mol / L calcium chloride solution for 18-24 hours, then soak in 0.1-0.5mol / L sodium phosphate solution for 18-24 hours, take out the willow branches and dry them; (4) Carry out high-temperature calcination treatment on the willow branches , the calcination temperature is 850-950°C, the heating rate is 1-3°C / min, and the furnace is cooled after calcination. The modification method of the invention can promote the osteogenesis ability of the willow branch, and can be stably used as an osteosynthetic repair material.

Description

technical field [0001] The invention belongs to the technical field of natural material modification and its medical application, and in particular relates to a modification method of willow branch, in particular to a method for sulfonation modification of willow branch and its application as a bone repair material. Background technique [0002] According to legend, willow branch bone grafting is a technique used by orthopedics and traumatologists in ancient Chinese medicine to treat open fractures. It has been spread in Jiangsu, Guangxi, Sichuan, Hunan and other places for a long time. The so-called willow branch bone grafting refers to replacing the irreparable part of the human bone with willow branches. Willow is not only a common plant, but also has medicinal value in many parts of itself. The book "Compendium of Materia Medica" of the Ming Dynasty records that "catkins, willow leaves, willow branches, willow roots and white skin, and even willow gum, willow parasites,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/02B27K5/00B27K5/04B27K9/00A61F2/28
CPCB27K9/002B27K3/02B27K5/001B27K5/04B27K5/00A61F2/28A61F2002/3093
Inventor 姚福君刘勋吴超群伍波李兆乾裴重华
Owner SOUTHWEAT UNIV OF SCI & TECH
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