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Polyphosphazene Microcapsules Fabricated through Covalent Assembly
Author(s) -
Feng Zhiqiang,
Fan Guoqiang,
Wang Hongxia,
Gao Changyou,
Shen Jiacong
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.200800636
Subject(s) - polyphosphazene , covalent bond , hexamethylenediamine , materials science , transmission electron microscopy , scanning electron microscope , chemical engineering , layer (electronics) , polymer chemistry , nanotechnology , chemistry , polymer , organic chemistry , composite material , polyamide , engineering
Hollow polyphosphazene microcapsules have been fabricated by the covalent layer‐by‐layer assembly of polydichlorophosphazene (PDCP) and hexamethylenediamine (HDA) on aminosilanized silica particles, followed by core removal in a HF/NH 4 F solution. The hollow and intact microcapsules in both wet and dry states have been characterized by transmission electron microscopy and confocal laser scanning microscopy. The chemical structure of the microcapsules has been verified by FT‐IR spectroscopy. The microcapsules could be hydrolytically degraded in a phosphate buffer at biological pH.