应用化学 ›› 2024, Vol. 41 ›› Issue (6): 870-877.DOI: 10.19894/j.issn.1000-0518.230255
收稿日期:
2023-08-26
接受日期:
2024-05-06
出版日期:
2024-06-01
发布日期:
2024-07-09
通讯作者:
张守村
基金资助:
Shou-Cun ZHANG(), Xue-Yin YAN, Yang-Hua SONG, Zhuo-Min LI
Received:
2023-08-26
Accepted:
2024-05-06
Published:
2024-06-01
Online:
2024-07-09
Contact:
Shou-Cun ZHANG
About author:
zhang_sc@ nun.edu.cnSupported by:
摘要:
以纤维素、甲基丙烯酸二甲基胺基乙酯和N,N′-亚甲基双丙烯酰胺等为原料制备了纤维素/聚甲基丙烯酸二甲基胺基乙酯互穿网络复合水凝胶材料(GCel/PD)。GCel/PD材料具有显著的CO2刺激响应特性,能有效地吸附分离牛血清白蛋白(BSA)。其中,对BSA的最大吸附量可达(434.4±15) mg/g。在CO2/N2氛围的循环切换下,GCel/PD材料表现出良好的循环稳定性,在循环使用3次之后,对蛋白质的吸附量仍能达到167.5 mg/g。使用之后,颗粒状GCel/PD便于从体系中分离出来,有望在蛋白质的分离提取方面得到应用。
中图分类号:
张守村, 闫雪垠, 宋阳华, 李卓敏. CO2刺激响应球型水凝胶的制备及在蛋白质分离中的应用[J]. 应用化学, 2024, 41(6): 870-877.
Shou-Cun ZHANG, Xue-Yin YAN, Yang-Hua SONG, Zhuo-Min LI. Preparation of CO2 Stimulus-Responsive Hydrogel and Its Application in Protein Separation[J]. Chinese Journal of Applied Chemistry, 2024, 41(6): 870-877.
Sample | m(GCel)/g a | c(DMAEMA)/(mol·L-1) b | c(MBA)/(mol·L-1) b | c(APPH)/(mol·L-1) b | V(H2O)/mL |
---|---|---|---|---|---|
GCel/PD-1 | 5.0 | 2.32 | 0.173 | 0.153 | 4.0 |
GCel/PD-2 | 5.0 | 1.89 | 0.141 | 0.125 | 4.0 |
GCel/PD-3 | 5.0 | 1.39 | 0.104 | 0.092 | 4.0 |
GCel/PD-4 | 5.0 | 0.771 | 0.058 | 0.051 | 4.0 |
表1 GCel/PD复合水凝胶的制备配方
Table 1 Preparation recipes of GCel/PD composite hydrogels
Sample | m(GCel)/g a | c(DMAEMA)/(mol·L-1) b | c(MBA)/(mol·L-1) b | c(APPH)/(mol·L-1) b | V(H2O)/mL |
---|---|---|---|---|---|
GCel/PD-1 | 5.0 | 2.32 | 0.173 | 0.153 | 4.0 |
GCel/PD-2 | 5.0 | 1.89 | 0.141 | 0.125 | 4.0 |
GCel/PD-3 | 5.0 | 1.39 | 0.104 | 0.092 | 4.0 |
GCel/PD-4 | 5.0 | 0.771 | 0.058 | 0.051 | 4.0 |
图1 纤维素基复合凝胶材料的制备流程及在CO2/N2切换下对BSA的吸附/脱附过程
Fig.1 Preparation process of cellulose-based composite hydrogel materials and the adsorption/desorption process of BSA by the switch of CO2/N2
图3 (A) GCel、(B) GCel/PD-1、(C) GCel/PD-2、(D) GCel/PD-3、(E) GCel/PD-4和(F) 3次吸附-脱附循环后GCel/PD-2样品的SEM图
Fig.3 SEM images of (A) GCel, (B) GCel/PD-1, (C) GCel/PD-2, (D) GCel/PD-3, (E) GCel/PD-4 and (F) GCel/PD-2 after three adsorption/desorption cycles
Samples | Pore diameter/nm | Specific surface area/(m2·g-1) | Zeta potential/mV a | pH |
---|---|---|---|---|
GCel | 4.6 | 18.59 | 2.07/1.74 | 4.42 |
GCel/PD-1 | 5.6 | 16.64 | 6.63/-1.85 | 5.21 |
GCel/PD-2 | 4.5 | 22.70 | 6.48/-6.99 | 5.54 |
GCel/PD-3 | 4.3 | 21.72 | -4.51/-10.67 | 5.29 |
GCel/PD-4 | 5.2 | 24.45 | -5.45/-18.87 | 5.13 |
表2 样品的BET测试和Zeta电位结果以及分散到被CO2饱和的BSA溶液中的pH值
Table 2 Results of BET test and Zeta potential analysisof samples, as well as the pH of the GCel/PD-BSA suspension solution saturated with CO2
Samples | Pore diameter/nm | Specific surface area/(m2·g-1) | Zeta potential/mV a | pH |
---|---|---|---|---|
GCel | 4.6 | 18.59 | 2.07/1.74 | 4.42 |
GCel/PD-1 | 5.6 | 16.64 | 6.63/-1.85 | 5.21 |
GCel/PD-2 | 4.5 | 22.70 | 6.48/-6.99 | 5.54 |
GCel/PD-3 | 4.3 | 21.72 | -4.51/-10.67 | 5.29 |
GCel/PD-4 | 5.2 | 24.45 | -5.45/-18.87 | 5.13 |
图5 GCel和GCel/PD复合材料对BSA的吸附A.The adsorption kinetics curve with the time; B.Saturated adsorption histogram of composites
Fig.5 Adsorption of BSA by GCel and GCel/PD composite materials
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