聚天冬氨酸凝胶的制备及生物降解性

doi:10.16085/j.issn.1000-6613.2021-2049

化工进展 ›› 2022, Vol. 41 ›› Issue (8): 4491-4497.DOI: 10.16085/j.issn.1000-6613.2021-2049

聚天冬氨酸凝胶的制备及生物降解性

岳瑶¹(), 蒲梦凡¹, 王文瑞¹, 赵俭波¹^,²(), 曹辉²()

^1.塔里木大学新疆兵团南疆化工资源利用工程实验室，新疆阿拉尔 843300
^2.北京化工大学北京市生物加工过程重点实验室，北京 100029

收稿日期:2021-09-30 修回日期:2021-12-21 出版日期:2022-08-25 发布日期:2022-08-22
通讯作者: 赵俭波,曹辉
作者简介:岳瑶（2001—），女，本科生，研究方向为生物质材料及凝胶材料。E-mail：Yue181589@163.com。
基金资助:
国家自然科学基金(21865026);大学生创新创业训练计划(202110757004);新疆生产建设兵团财政科技项目(2018BC005)

Preparation and biodegradability of polyaspartic acid hydrogel

YUE Yao¹(), PU Mengfan¹, WANG Wenrui¹, ZHAO Jianbo¹^,²(), CAO Hui²()

^1.Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, Tarim University, Alar 843300, Xinjiang, China
^2.Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China

Received:2021-09-30 Revised:2021-12-21 Online:2022-08-25 Published:2022-08-22
Contact: ZHAO Jianbo,CAO Hui

摘要/Abstract

摘要：

以丙三醇三缩水甘油醚为交联剂制备聚天冬氨酸凝胶，考察了凝胶的热性能和黏弹性，并采用平板培养和液体培养法考察了凝胶的生物降解性。结果表明：丙三醇三缩水甘油醚交联凝胶具有良好的吸水保水性，且耐热性和黏弹性更优，平板试验证明凝胶也具有良好的生物降解性，液体培养法证明交联剂的种类和用量对凝胶的降解有较大影响，交联度均为60%的凝胶，交联剂为丙三醇三缩水甘油醚时第9天降解率为49.3%，较交联剂为乙二醇二缩水甘油醚制备的凝胶低9.2%，说明在相同交联度下丙三醇三缩水甘油醚形成的网络结构更致密；交联剂均为丙三醇三缩水甘油醚时，交联度为40%的第9天降解率为59.8%，较交联度为60%的凝胶提高了17.5%，交联度增加，降解速率降低。

关键词: 聚天冬氨酸凝胶, 丙三醇三缩水甘油醚, 生物降解性, 液体培养法

Abstract:

Polyaspartic acid (PASP) gel was prepared with glycerol triglycidyl ether as the cross-linking agent. The thermal properties and viscoelasticity of this hydrogel were investigated, and the biodegradability was investigated by plate culture and zymotic fluid culture. Results showed that the glycerol triglycidyl ether crosslinked hydrogel had better heat resistance and viscoelasticity. The plate test proved that PASP hydrogel also had good biodegradability. The zymotic fluid culture proved that the type and dosage of crosslinking agent had great influence on the degradation of hydrogel. When the crosslinking agent was glycerol triglycidyl ether and the crosslinking degree was 60%, the degradation rate of gel on the ninth day was 49.3%, which was 9.2% lower than that of crosslinking agent of ethylene glycol diglycidyl ether, indicating that the network structure of glycerol triglycidyl ether was denser under the same crosslinking degree. When the cross-linking agent was glycerol triglycidyl ether and the crosslinking degree was 40%, the gel degradation rate was 59.8%, which was 17.5% higher than that when the cross-linking degree was 60%. This work laid a foundation for the practical application of polyaspartic acid hydrogel.

Key words: polyaspartic acid hydrogel, glycerol triglycidyl ether, biodegradability, zymotic fluid culture

中图分类号:

TQ322.4

岳瑶, 蒲梦凡, 王文瑞, 赵俭波, 曹辉. 聚天冬氨酸凝胶的制备及生物降解性[J]. 化工进展, 2022, 41(8): 4491-4497.

YUE Yao, PU Mengfan, WANG Wenrui, ZHAO Jianbo, CAO Hui. Preparation and biodegradability of polyaspartic acid hydrogel[J]. Chemical Industry and Engineering Progress, 2022, 41(8): 4491-4497.

图/表 10

图1 环氧类交联剂的结构

图2 PSI、EGDE交联PASP凝胶、GTE交联PASP凝胶红外吸收光谱

图3 以EGDE、GTE为交联剂的PASP凝胶SEM图

图4 PASP凝胶的TG、DTG图

图5 PASP凝胶的黏弹性能

图6 EGDE与GTE交联PASP凝胶不同交联度下的吸水率曲线

图7 放线菌接种EGDE交联不同交联度PASP凝胶和GTE交联不同交联度PASP凝胶照片a—EGDE，交联度40%；b—EGDE，交联度50%；c—EGDE，交联度60%；d—GTE，交联度40%；e—GTE，交联度50%；f—GTE，交联度60%

图8 细菌接种EGDE交联不同交联度PASP凝胶和GTE交联不同交联度PASP凝胶照片a—EGDE，交联度40%；b—EGDE，交联度50%；c—EGDE，交联度60%；d—GTE，交联度40%；e—GTE，交联度50%；f—GTE，交联度60%

图9 液体培养法中同一交联剂不同交联度、同一交联度不同交联剂PASP凝胶的降解率曲线

图10 液体培养法中同一交联剂不同交联度、同一交联度不同交联剂PASP凝胶的OD600曲线

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聚天冬氨酸凝胶的制备及生物降解性

Preparation and biodegradability of polyaspartic acid hydrogel

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