[1] Tan Qiyan, Kan Yajing, Zhao Gutian, Qiu Yinghua, et al. Pressure-induced strong adhesion between chitosan nanofilms [J]. Journal of Southeast University (English Edition), 2015, 31 (1): 113-117. [doi:10.3969/j.issn.1003-7985.2015.01.019]

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Pressure-induced strong adhesion between chitosan nanofilms()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

31

Issue:

2015 1

Page:

113-117

Research Field:

Chemistry and Chemical Engineering

Publishing date:

2015-03-30

Info

Title:

Pressure-induced strong adhesion between chitosan nanofilms

Author(s):

Tan Qiyan;  Kan Yajing;  Zhao Gutian;  Qiu Yinghua;  Chen Yunfei

School of Mechanical Engineering, Southeast University, Nanjing 211189, China
Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Nanjing 211189, China

Keywords:

surface force apparatus(SFA);  chitosan;  adhesion;  pressure;  mica surface

PACS:

O631.1

DOI:

10.3969/j.issn.1003-7985.2015.01.019

Abstract:

The surface and adhesion forces between chitosan-coated mica surfaces in an acetic acid buffer solution were measured using a surface force apparatus(SFA). The force-distance profiles were obtained under different pressure conditions. It was found that the chitosan was adsorbed on the mica surface and formed a stable nanofilm under acid conditions. The adsorbed chitosan nanofilms induced a short-range monotonically steric force when two such surfaces came close in the acid buffer. The adhesion forces between the two chitosan-coated mica surfaces varied with the loads. Strong adhesion between the two chitosan-coated mica surfaces was observed at high pressure. Such pressure-dependent adhesion properties are most likely related to the molecular configurations and hydrogen bonds reordering under high confinement.

References:

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Memo

Memo:

Biographies: Tan Qiyan(1981—), male, graduate; Chen Yunfei(corresponding author), male, doctor, professor, yunfeichen@seu.edu.cn.
Foundation items: The National Basic Research Program of China(973 Program)(No.2011CB707605), the National Natural Science Foundation of China(No.50925519).
Citation: Tan Qiyan, Kan Yajing, Zhao Gutian, et al.Pressure-induced strong adhesion between chitosan nanofilms[J].Journal of Southeast University(English Edition), 2015, 31(1):113-117.[doi:10.3969/j.issn.1003-7985.2015.01.019]

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