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Preparation method of a novel biodegradable fast photocuring molding material

A technology of photocuring molding and biodegradation, which is applied in the field of material preparation, can solve the problems of ion toxicity residue and carbon-carbon double bond remaining difficult to degrade, and achieves the effects of low price, high mechanical properties and good degradability.

Active Publication Date: 2021-04-06
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of a large number of carbon-carbon double bonds remaining in traditional photocuring, which are difficult to degrade, and ion toxicity in photoinitiated systems, the present invention provides a new biodegradable and rapid photocuring molding material preparation method. The preparation of photocuring materials and The curing system can be greatly improved. By selecting biodegradable polymers (caprolactone) as raw materials and combining click chemical reactions to construct a non-toxic, efficient and environmentally friendly light curing technology and light curing system

Method used

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  • Preparation method of a novel biodegradable fast photocuring molding material
  • Preparation method of a novel biodegradable fast photocuring molding material
  • Preparation method of a novel biodegradable fast photocuring molding material

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Experimental program
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Embodiment 1

[0021] refer to Figure 1 ~ Figure 3 , a method for preparing a novel biodegradable fast photocuring material, the method comprising the following steps:

[0022] 1) The caprolactone after the dehydration of calcium hydride is subjected to a ring-opening reaction under the initiation of polyethylene glycol, and the polycaprolactone-polyethylene glycol-polycaprolactone block polymer PCEC is prepared;

[0023] 2) The product of step 1) is modified by acryloyl chloride to double bonds to prepare a block polymer enePCEC with double bond end groups;

[0024] 3) The product in the step 2) obtained with chain extender (polyethylene glycol diacrylate PEGDA), crosslinking agent (tetrakis (3-mercaptopropionic acid) pentaerythritol ester), photoinitiator (benzoin dimethyl ether DMPA) is cured after UV irradiation.

[0025] Further, in the step 1), the preparation process of PCEC is as follows: before the experimental reaction, all reaction reagents and solvents are treated with calcium...

Embodiment 2

[0029] refer to Figure 1 ~ Figure 3 , a method for preparing a novel biodegradable fast photocuring material, the method comprising the following steps:

[0030] 1) The caprolactone after the dehydration of calcium hydride is subjected to a ring-opening reaction under the initiation of polyethylene glycol, and the polycaprolactone-polyethylene glycol-polycaprolactone block polymer PCEC is prepared;

[0031] 2) The product of step 1) is modified by acryloyl chloride to double bonds to prepare a block polymer enePCEC with double bond end groups;

[0032] 3) The product in the step 2) obtained with chain extender (polyethylene glycol diacrylate PEGDA), crosslinking agent (tetrakis (3-mercaptopropionic acid) pentaerythritol ester), photoinitiator (benzoin dimethyl ether DMPA) is cured after UV irradiation.

[0033] Further, in the step 1), the preparation process of PCEC is as follows: before the experimental reaction, all reaction reagents and solvents are treated with calcium...

Embodiment 3

[0037] refer to Figure 1 ~ Figure 3 , a method for preparing a novel biodegradable fast photocuring material, the method comprising the following steps:

[0038] 1) The caprolactone after the dehydration of calcium hydride is subjected to a ring-opening reaction under the initiation of polyethylene glycol, and the polycaprolactone-polyethylene glycol-polycaprolactone block polymer PCEC is prepared;

[0039] 2) The product of step 1) is modified by acryloyl chloride to double bonds to prepare a block polymer enePCEC with double bond end groups;

[0040] 3) The product in the step 2) obtained with chain extender (polyethylene glycol diacrylate PEGDA), crosslinking agent (tetrakis (3-mercaptopropionic acid) pentaerythritol ester), photoinitiator (benzoin dimethyl ether DMPA) is cured after UV irradiation.

[0041] Further, in the step 1), the preparation process of PCEC is as follows: before the experimental reaction, all reaction reagents and solvents are treated with calcium...

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Abstract

A preparation method of a novel biodegradable rapid photocuring molding material, comprising the following steps: the caprolactone after dehydration of calcium hydride undergoes a ring-opening reaction under the initiation of polyethylene glycol to prepare polycaprolactone ‑polyethylene glycol‑polycaprolactone block polymer PCEC; 2) the product of step 1) is modified by acryloyl chloride to double bond, and the block polymer enePCEC of the double bond end group is prepared; 3) the obtained The product in step 2) and chain extender (polyethylene glycol diacrylate PEGDA), crosslinking agent (tetrakis (3-mercaptopropionic acid) pentaerythritol ester), photoinitiator (benzoin dimethyl ether DMPA) pass through UV radiation Curing after exposure. The preparation and curing system of the light-curing material of the present invention can be greatly improved. By selecting biodegradable polymers (caprolactone) as raw materials and combining click chemical reactions to construct a non-toxic, efficient and environmentally friendly light-curing material Curing technology and light curing system.

Description

technical field [0001] The invention relates to the field of rapid photocurable materials, in particular to a preparation method of a photocurable rapid prototyping material with good biocompatibility and biodegradability obtained through mercapto-ene click chemistry technology. Background technique [0002] With the development of photo-curing molding technology, the research and development of photo-curing materials is also deepening. At present, the development of an environmentally friendly, economical and efficient light-curing material has become a research hotspot at home and abroad. The selection of polymer raw materials is an important factor affecting the application of cured molding materials, which mainly includes the degradation performance and mechanical properties of polymers. In addition, it is especially necessary to maintain the biocompatibility of the molding material in the post-processing process of the medical field, and the adhesion, growth and differ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F299/04C08G63/91C08G63/664
CPCC08F299/0428C08G63/664C08G63/912
Inventor 朱雅芝陈枫杨晋涛范萍钟明强
Owner ZHEJIANG UNIV OF TECH