Document Detail

Mechanism of Adhesion between Polymer Fibers at Nano-scale Contacts.
MedLine Citation:
PMID:  22352301     Owner:  NLM     Status:  Publisher    
Adhesive force exists between polymer nano/microfibers. An elaborate experiment was performed to investigate the adhesion between polymer nano/microfibers using a nano force tensile tester. Electrospun polycaprolactone (PCL) fibers with radii ranging from 0.2 - 1.1 μm were studied. The response of surface property of electrospun fiber to the environmental conditions was tracked by Fourier Transform Infrared Spectroscopy (FTIR) and Atomic Force Microscopy (AFM) measurements. The effect of temperature on molecular orientation was examined by Wide Angle X-ray diffraction (WAXD). The adhesive force was found to increase with temperature and pull-off speed, but insensitive to the change of relative humidity. And the abrupt increase of adhesion energy with temperature accompanied by a reduced molecular orientation in the amorphous part of fiber was observed. Results show that adhesion is mainly driven by van der Waals interactions between inter-diffusion chain segments across the interface.
Qiang Shi; Shing-Chung Wong; Ye Wei; Hou Jianwen; Jie Zhao; Jinghua Yin
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-21
Journal Detail:
Title:  Langmuir : the ACS journal of surfaces and colloids     Volume:  -     ISSN:  1520-5827     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-2-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882736     Medline TA:  Langmuir     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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