Preparation method of degradable polybutylene adipate/potassium bromide composite

A polybutylene adipate and composite material technology is applied in the field of preparation of polybutylene adipate/potassium bromide composite materials, and can solve the problems of hindering application, slow crystallization, poor hardness and the like, Achieve excellent biocompatibility, excellent biodegradability, and improve uniformity

Active Publication Date: 2017-03-15
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of poor hardness and slow crystallization speed limit its good application prospects, making it difficult to apply in industrial production, and the existing methods such as blending modification and copolymerization modification have excellent degradation performance and physiological activity of PBA. The performance has caused irreversible effects, which hinders its application as a bioactive material in biomedicine and other fields

Method used

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  • Preparation method of degradable polybutylene adipate/potassium bromide composite
  • Preparation method of degradable polybutylene adipate/potassium bromide composite
  • Preparation method of degradable polybutylene adipate/potassium bromide composite

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A kind of preparation method of degradable polybutylene adipate / potassium bromide composite material is characterized in that, comprises the following steps:

[0026] 1) Grind potassium bromide particles for 2 hours, and dry them under vacuum at 150°C for 1 week for use;

[0027] 2) Weigh PBA=0.2g, put it in a 10ml volumetric flask, and use CHCl, a good solvent for PBA, to 3 Dilute to 10ml, add a magnetic stirring rotor and stir magnetically at room temperature for 30 minutes to completely dissolve the PBA, and perform triplicate;

[0028] 3) Weigh 0.002g and 0.02g of KBr described in step 1) and add them to the PBA solution obtained in step 2), to obtain three blended solutions with KBr contents of 0 wt%, 1 wt% and 10 wt% respectively;

[0029] 4) Add 0.1ml of deionized water to the PBA solutions with different contents of KBr obtained in step 3), and then transfer the volumetric flask into the KQ3200E ultrasonic instrument at room temperature for 1 hour to obtain the...

Embodiment 2

[0035] A kind of degradable polybutylene adipate / potassium bromide composite material and preparation method thereof, is characterized in that, comprises the following steps:

[0036]1) Grind potassium bromide particles for 2 hours, and dry them under vacuum at 150°C for 1 week for use;

[0037] 2) Weigh PBA=0.2g, put it in a 10ml volumetric flask, and use CHCl, a good solvent for PBA, to 3 Dilute to 10ml, add a magnetic stirring rotor and stir magnetically at room temperature for 30 minutes to completely dissolve the PBA, and perform triplicate;

[0038] 3) Weigh 0.002g and 0.02g of KBr described in step 1) and add them to the PBA solution obtained in step 2), to obtain three blended solutions with KBr contents of 0wt%, 1wt% and 10wt%, respectively;

[0039] 4) Add 0.2ml of deionized water to the PBA solutions with different contents of KBr obtained in step 3), and then transfer the volumetric flask into the KQ3200E ultrasonic instrument at room temperature for 1 hour to obt...

Embodiment 3

[0045] A kind of degradable polybutylene adipate / potassium bromide composite material and preparation method thereof, is characterized in that, comprises the following steps:

[0046] 1) Grind potassium bromide particles for 2 hours, and dry them under vacuum at 150°C for 1 week for use;

[0047] 2) Weigh PBA=0.2g, put it in a 10ml volumetric flask, and use CHCl, a good solvent for PBA, to 3 Dilute to 10ml, add a magnetic stirring rotor and stir magnetically at room temperature for 30 minutes to completely dissolve the PBA, and perform triplicate;

[0048] 3) Weigh 0.002g and 0.02g of KBr described in step 1) and add them to the PBA solution obtained in step 2), to obtain three blended solutions with KBr contents of 0wt%, 1wt% and 10wt%, respectively;

[0049] 4) Add 0.1ml of deionized water to the PBA solutions with different contents of KBr obtained in step 3), and then transfer the volumetric flask into the KQ3200E ultrasonic instrument at room temperature for 1 hour to ob...

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Abstract

The invention relates to a preparation method of a degradable polybutylene adipate / potassium bromide composite. The preparation method includes: (1) grinding potassium bromide particles prior to vacuum drying for standby; (2) putting PBA into a volumetric flask, and forming constant volume with a good solvent CHCl3 to enable PBA to dissolve completely; (3) adding KBr into prepared PBA solution to obtain KBr blended solution; (4) adding ionized water into the PBA solution different in KBr content, performing room-temperature ultrasonic treatment on the volumetric flask to prepare PBA / KBr membrane casting suspension; (5) subjecting the prepared PBA membrane casting suspension to spin coating to obtain a composite film, and performing vacuum drying for 6 hours after solvent CHCl3 completely volatilizes at room temperature; (6) subjecting the prepared composite film to constant temperature culture to eliminate thermal history; (7) subjecting the composite film with thermal history eliminated to constant temperature culture till fully recrystallized; (8) cooling the fully crystallized product in the step (3) to room temperature for under test. The preparation method is simple and scientific in process, low in cost, controllable in procedure and hopeful in industrial production, and has tremendous potential application prospect and economic benefit.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a preparation method of a degradable polybutylene adipate / potassium bromide composite material. Background technique [0002] Polybutylene adipate (PBA) is an important biodegradable polymer material. As a linear material, its molecular chain contains ester bonds and ether bonds, resulting in good flexibility of the macromolecular chain, and at the same time, it is biodegradable. Environmentally friendly features such as compatibility and complete biodegradability can be applied to biomedicine, materials and other fields. As a crystalline polymer, PBA can be crystallized to form two crystal phases, namely α and β, and the β crystal form can be transformed into the α crystal form by heating or annealing at a higher temperature. The α crystal form of PBA exhibits better thermal stability than β, and the degradation rate is also faster. The β cryst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K3/16C08J5/18
CPCC08J5/18C08J2367/02C08K3/16C08L2201/06C08L2201/08C08L2205/24C08L67/02
Inventor 王海军阮潇潇杨茜高治进李镇伟王帅毅
Owner SHAANXI UNIV OF SCI & TECH
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