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Morphology of poly( ε ‐caprolactone)‐ b ‐poly(ethylene glycol)‐ b ‐poly( ε ‐caprolactone) assemblies in diluted aqueous solution and gel studied by atomic force microscopy
Author(s) -
Guo Shengrong,
Zhang Yaqiong,
Yu Zhang
Publication year - 2008
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1170
Subject(s) - caprolactone , ethylene glycol , copolymer , materials science , aqueous solution , morphology (biology) , polymer chemistry , atomic force microscopy , chemical engineering , peg ratio , polymer , composite material , nanotechnology , chemistry , finance , biology , economics , engineering , genetics
Morphologies of poly(ε‐caprolactone)‐ b ‐poly(ethylene glycol)‐ b ‐poly(ε‐caprolactone) (PCL‐PEG‐PCL) triblock copolymer self‐assemblies in the diluted solution and in gel were studied by atomic force microscopy (AFM). The copolymer self‐assembled into wormlike aggregates, of uniform diameter, in water. The wormlike aggregates arranged in order to form separate clusters in the diluted copolymer solution; at a higher copolymer concentration, the clusters became bigger and bigger, and packed together to form gel. Copyright © 2008 John Wiley & Sons, Ltd.