A kind of preparation method of degradable polybutylene adipate/potassium bromide composite material

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

Active Publication Date: 2018-08-07
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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  • A kind of preparation method of degradable polybutylene adipate/potassium bromide composite material
  • A kind of preparation method of degradable polybutylene adipate/potassium bromide composite material
  • A kind of preparation method of degradable polybutylene adipate/potassium bromide composite material

Examples

Experimental program
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Effect test

Embodiment 1

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

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

[0027] 2) Weigh PBA=0.2g, put it in a 10ml volumetric flask, use PBA's good solvent CHCl 3 Dilute the volume to 10ml, add a magnetic stirring rotor and magnetic stirring at room temperature for 30 minutes to completely dissolve the PBA, in 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 content of 0 wt%, 1 wt% and 10 wt% respectively;

[0029] 4) Add 0.1ml of deionized water to the PBA solution with different content of KBr obtained in step 3), and then move the volumetric flask into the KQ3200E ultrasonic instrument with normal temperature ultrasound for 1 hour to prepare PBA / KBr suspension c...

Embodiment 2

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

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

[0037] 2) Weigh PBA=0.2g, put it in a 10ml volumetric flask, use PBA's good solvent CHCl 3 Dilute the volume to 10ml, add a magnetic stirring rotor and magnetic stirring at room temperature for 30 minutes to completely dissolve the PBA, in 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 content of 0wt%, 1wt% and 10wt% respectively;

[0039] 4) Add 0.2ml of deionized water to the PBA solution with different content of KBr obtained in step 3), and then move the volumetric flask into the KQ3200E ultrasonic instrument with normal temperature ultrasound for 1 hour to prepare PBA / KBr suspensi...

Embodiment 3

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

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

[0047] 2) Weigh PBA=0.2g, put it in a 10ml volumetric flask, use PBA's good solvent CHCl 3 Dilute the volume to 10ml, add a magnetic stirring rotor and magnetic stirring at room temperature for 30 minutes to completely dissolve the PBA, in 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 content of 0wt%, 1wt% and 10wt% respectively;

[0049] 4) Add 0.1ml of deionized water to the PBA solution with different content of KBr obtained in step 3), and then move the volumetric flask into the KQ3200E ultrasonic instrument with normal temperature ultrasound for 1 hour to prepare PBA / KBr suspensi...

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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 specifically 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, which leads to good flexibility of the macromolecular chain and also biological Environmentally friendly features such as compatibility and complete biodegradability can be used in biomedicine, materials and other fields. As a crystalline polymer, PBA can be crystallized to form two crystal phases, namely α and β, in which 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 shows better thermal stability than β, and the degradation rate is also faster. β crystal form is a kinetic stable syste...

Claims

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Application Information

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Patent Type & Authority Patents(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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