Premium
Synthesis and Surface Morphology of Tetraaniline‐ block ‐Poly( L ‐lactate) Diblock Oligomers
Author(s) -
Wang Hanfu,
Guo Peng,
Han Yanchun
Publication year - 2006
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200500601
Subject(s) - morphology (biology) , polymer chemistry , polymerization , aniline , copolymer , block (permutation group theory) , solvent , materials science , chemical engineering , chemistry , polymer , organic chemistry , composite material , genetics , geometry , mathematics , engineering , biology
Summary: Tetraaniline‐ block ‐poly( L ‐lactide) diblock oligomers are synthesized via ring‐opening polymerization. The diblock oligomers cast from an L ‐lactide selective solvent (chloroform) show spherical aggregates for the leucoemeraldine state, and ring‐like structures that are composed of much smaller spherical aggregates for the emeraldine state. The formation mechanisms of the two different surface morphologies are discussed in detail.Surface morphology changes induced by oxidation of the aniline segment of tetraaniline‐ block ‐poly( L ‐lactate) and drying effects.