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Orientation of Syndiotactic Polystyrene Crystallized in Cylindrical Nanopores
Author(s) -
Wu Hui,
Wang Wei,
Huang Yan,
Su Zhaohui
Publication year - 2009
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.200800626
Subject(s) - nanorod , materials science , polystyrene , nanopore , perpendicular , tacticity , orientation (vector space) , morphology (biology) , chemical engineering , anodic aluminum oxide , nanotechnology , composite material , crystallography , chemistry , geometry , fabrication , polymer , mathematics , biology , engineering , polymerization , genetics , medicine , alternative medicine , pathology
Syndiotactic polystyrene (sPS) nanorods with different diameters have been prepared by using anodic aluminum oxide templates, and the orientation of the sPS crystals in the nanorods has been investigated by FT‐IR spectroscopy. It is found that the c axis of the β ′ crystals preferentially oriented perpendicular to the axis of the nanorod, and the degree of orientation is lower as the diameter of the nanorod decreases. This unexpected result is attributed to nuclei formed at the surface of the nanopores and their subsequent growth, in addition to the preferential growth compatible with the pore direction by the nuclei formed in the bulk film and in the nanorods.