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Sulfonation modification method of willow twigs and application of willow twigs as bone repair materials

A technology of sulfonation modification and switchgrass, which is applied in wood treatment, bone implants, wood heating and other directions, can solve the problem of insufficient osteogenic ability of switchgrass, and is conducive to large-scale industrial processing and has strong osteogenic ability. , the effect of low cost

Active Publication Date: 2021-03-05
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Sulfonation modification method of willow twigs and application of willow twigs as bone repair materials
  • Sulfonation modification method of willow twigs and application of willow twigs as bone repair materials
  • Sulfonation modification method of willow twigs and application of willow twigs as bone repair materials

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 willow twig sulfonation modification method which comprises the following steps: (1), peeling willow twigs, cutting the willow twigs into small sections, cleaning the willow twigs, and drying the willow twigs; (2), putting the dried willow branches into 0.2-2.0 mol / L of sulfuric acid, performing heating to 50-90 DEG C, performing stirring to react for 1-6 hours, performingcooling, taking out the product, performing cleaning, and performing drying; (3), putting the willow twigs treated in the step (2) into a calcium chloride solution with the concentration of 0.1-0.5 mol / L to be soaked for 18-24 hours, then soaking the willow twigs into a sodium phosphate solution with the concentration of 0.1-0.5 mol / L for 18-24 hours, taking out the willow twigs and drying the willow twigs; and (4), enabling the willow twigs to be subjected to high-temperature calcination treatment, the calcination temperature being 850-950 DEG C, the heating rate being 1-3 DEG C / min, and performing furnace cooling after calcination. The modification method can promote the osteogenesis capacity of willow twigs, and the willow twigs can be stably used as a bone setting 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 Applications(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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