Biodegradable polyamideimide and preparation thereof

A citric amide imide, biodegradable technology, applied in the field of environmentally friendly materials and biomedical materials, can solve the problems of difficult degradation of nylon, poor hydrophilicity, etc., and achieves easier control of crosslinking degree, high hydrophilicity, Easy to promote the effect of the application

Inactive Publication Date: 2012-05-09
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] General large-scale polyamides (various types of nylon) use non-renewable resources as raw materials, and the methylene (-CH 2 -) n The poor hydrophilicity, coupled with the well-ordered and regular stacking of macromolecular chains, makes nylon often difficult to degrade through biological pathways

Method used

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  • Biodegradable polyamideimide and preparation thereof
  • Biodegradable polyamideimide and preparation thereof
  • Biodegradable polyamideimide and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Mix 10.0ml of tributyl citrate, 5.0ml of 1,6-hexanediamine and 1.0ml of triethylamine into a round-bottomed flask, connect it to a rotary evaporator and evacuate to -0.1MPa, and control the temperature at 50°C After reacting for 6 hours, the prepolymer was obtained. Place it on a clean glass surface while it was hot, spread it evenly, and then vacuum-dry it for 11.5 hours with the temperature controlled at 160°C to obtain polycitric acid amide imide.

Embodiment 2

[0046] Mix 10.0ml of tributyl citrate, 5.0ml of 1,6-hexanediamine and 1.0ml of triethylamine into a round-bottomed flask, connect it to a rotary evaporator, vacuumize to about -0.04MPa, and react at room temperature for 2 hours. Then, heating at 120° C. and continuing the rotation reaction for 2 h to obtain polycitamide imide.

Embodiment 3

[0048] Mix 10.0ml of tributyl citrate, 5.0ml of 1,6-hexanediamine and 1.0ml of triethylamine into a round-bottomed flask, connect it to a rotary evaporator, evacuate to -0.04MPa, and continue heating at 50°C After 12 hours of rotation reaction, polycitamide imide was obtained.

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Abstract

The invention discloses a biodegradable poly(citric amide imide) and a preparation method thereof, which belong to the polymer material technical field. Citrate ester and aliphatic diamine are evenly mixed according to the mol ratio of between 1 to 0.2 and 1 to 5, a catalyst which accounts for 1 to 10 weight percent of the total weight of the citrate ester is added and evenly mixed with reactants, and a condensation polymerization reaction is performed for 1 to 6 hours at vacuum pressure reduction and a temperature of between 50 and 100 DEG C to form a prepolymer; and the prepolymer continuesto react for 10 to 24 hours at a temperature of between 50 and 160 DEG C to produce the crosslinking network type biodegradable poly(citric amide imide). The preparation method has the advantages of easy degradation and environmental protection.

Description

technical field [0001] The invention relates to a biodegradable polymer material - polycitamide imide and a preparation method thereof, belonging to the technical field of polymer compounds, and its products are mainly used in environment-friendly materials and biomedical materials. technical background [0002] How to endow polyamide materials with good biocompatibility and natural environment-friendly properties, Ogata Naoya et al. proposed for the first time that polyamide resins with good hydrophilicity can be synthesized simply and easily from diethyl tartrate and hexamethylenediamine[J J. Polym. Sci., Polym. Chem. Ed. 1975, 13, 179; J. Polym. Sci. Polym. Chem. Ed., 1980, 18(3), 939-948]. This polymerization reaction should be carried out under appropriate polar solvent conditions, such as dimethylsulfoxide, dimethylacetamide or methanol. The aggregation state structure and degradation performance of this tartaric acid type polyamide resin have had more improvement and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/14
Inventor 董坚黄燕飞叶赛张贝妮陈强刘伟鹿萍舒鑫琳
Owner SHAOXING UNIVERSITY
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