肉桂醛/壳聚糖功能化碳纳米管的制备及其性质研究
Preparation and properties of carbon nanotube composite modified by cinnamaldehyde/chitosan
摘要
肉桂醛改性处理的壳聚糖对碳纳米管表面进行修饰，制得一种新型的肉桂醛/壳聚糖/碳纳米管复合材料。用傅立叶红外光谱（FT-IR），X射线衍射仪（XRD），热分析系统(TGA)，透射电镜（TEM）对该肉桂醛/壳聚糖/碳纳米管复合材料及相应中间产物进行表征与分析。以猪胰脂肪酶为模型，探究该肉桂醛/壳聚糖/碳纳米管复合材料固定化酶的性质。实验证明：在肉桂醛与壳聚糖的质量比为4:1，pH=7.0，脂肪酶浓度为5mg/ml时，该复合材料最大负载量为248mg/g，酶活性为8064U/g，重复利用7次后，酶活性仍然保持69%。
Abstract
A novel carbon nanotube composite modified by cinnamaldehyde/chitosan has been synthesized, The composite and the corresponding intermediates were characterized by FT-IR, XRD, SEM and TGA. Using lipase as the model, to explore the cinnamic aldehyde/chitosan/carbon nanotube composite material properties of the immobilized enzyme. The results showed that in the quality of cinnamic aldehyde and chitosan ratio of 4:1, pH = 7.0, enzyme concentration of 5 mg/ml, the maximum load of the composite materials was 248 mg/g , and the enzyme activity was 8064 u/g, use again after 7 times, enzyme activity remained 69%.关键词
碳纳米管/肉桂醛/壳聚糖/非共价修饰/固定化酶Key words
carbon nanotubes/cinnamaldehyde/chitosan/non covalent modification/immobilization of enzyme引用本文复制引用
夏书芹,刘威,张晓鸣,贾承胜.肉桂醛/壳聚糖功能化碳纳米管的制备及其性质研究[EB/OL].(2016-12-14)[2026-04-04].http://www.paper.edu.cn/releasepaper/content/201612-284.学科分类
生物科学研究方法、生物科学研究技术/生物工程学/生物化学
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