Stability Study of Multiwalled Carbon Nanotube/κ-Casein Dispersion

Biochemistry and Biophysics

Bao-Guang Ma¹ 

关键词: MWNT Dispersion;    κ-casein;    Circular Dichroism;    Phenylalanine;   

DOI  :  

学科分类：生物化学/生物物理

来源: Science and Engineering Publishing Company

【 摘 要 】

Abstract: As one of the most promising materials, multiwalled carbon nanotubes (MWNTs) are being developed for bioapplications. However, the poor dispersion in either water or organic solvents has largely restricted the research and applications of MWNTs. In this study, MWNTs were homogeneously dispersed in aqueous solution ofκ-casein without chemical modification. Techniques including Zeta potential, transmission electron microscopy, circular dichroism have been employed to study the influencing factors on the stability of the dispersion. The results indicated that the dispersion of MWNTs in 0.05 %wt κ-casein is the most stable when the concentration of MWNTs is 0.1 %wt. The exposure of phenylalanine in κ-casein has a significant impact on the dispersion of MWNTs because of the π-π stacking and strong van der Waals attractions between the phenylalanine and MWNTs. The high stability of dispersion may open a new and economic way to use this common protein for bioapplication and biomaterial in the future.

【 授权许可】

Unknown