Studies of Bentonite Added Protein-Tannic Acid Multilayer Thin Films

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Lau, H.H.^1,2 ; Kiryukhin, M.V.^1,2 ; Yakovlev, N.L.^1 ; Ooi, C.P.^1

Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A, STAR), Singapore, Singapore^1

Singapore University of Social Studies (SUSS), Singapore^2

关键词: Bovine serum albumins;    Large amounts;    Layer-by-layer assemblies;    Linear growth;    Multi-layer thin film;    Reversible adsorption;    Silicon surfaces;    Weak binding;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/2/012013/pdf
DOI  :  10.1088/1755-1315/186/2/012013

来源: IOP

【 摘 要 】

Bentonite added in bovine serum albumin (BSA) increases the thickness of the multilayer film. BSA-TA multilayer thin films are built on silicon surface. The growths of the multilayer thin films are investigated by ellipsometry. The surface morphologies of the multilayer thin films are characterised with scanning electron microscopy (SEM). Both BSA-TA and BSA-Bentonite (BSAB)-TA layer-by-layer (LbL) assemblies exhibit linear growth behaviour. For all multilayer films studied here, a large amount of tannic acid molecules is eluted during washing, indicating weak binding and reversible adsorption on BSA surface. Oppositely, BSA absorb irreversibly on TA-terminated layer.