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Nanofiber Formation of Hydroxylpropylcellulose (HPC)
Author(s) -
Yan Lifeng,
Lin Wei,
Bangal Prakriti R.
Publication year - 2006
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.200600067
Subject(s) - lower critical solution temperature , nanofiber , aqueous solution , mica , chemical engineering , substrate (aquarium) , molecule , materials science , dynamic light scattering , thin film , polymer chemistry , chemistry , nanotechnology , composite material , polymer , nanoparticle , organic chemistry , copolymer , oceanography , geology , engineering
Summary: The aggregative behaviors of hydroxypropylcellulose (HPC) molecules in aqueous solution and on substrates have been observed by employing laser light scattering (LLS) and, after deposition on a mica surface, atomic force microscopy (AFM). LLS studies showed that the HPC molecules formed large aggregates through self‐association when the concentration of the solution was above the critical concentration c t . AFM measurements revealed that when a dilute aqueous solution of HPC molecules was deposited onto a mica substrate at a temperature below its lower critical solution temperature (LCST) thin nanofibers were formed with a height of 0.9 nm, whereas thick nanofibers were formed when an aqueous solution of HPC molecules was deposited onto a substrate above its LCST. Furthermore, the growth of nanofibers led to the formation of fan structures.AFM image of the HPC fan‐like structures on the surface of mica.