Solution-grown crystal of poly[bis(4-isopropylphenoxy)phosphazene]

The structural features of poly[bis(4‐isopropylphenoxy)phosphazene] (PB(4‐ip)PP) have been studied by electron microscopy, X‐ray diffraction and differential scanning calorimetry techniques. Its orthorhombic lattice constants are determined as follows: a = 3,14 nm, b = 1,14 nm, c = 0,992 nm. The spa...

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Bibliographic Details
Published in:Macromolecular rapid communications. 1995-03, Vol.16 (3), p.189-196
Main Authors: Nakamura, Hitoshi, Miyata, Tadakazu, Yonetake, Koichiro, Masuko, Toru, Kojima, Morio
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Inorganic and organomineral polymers
Physicochemistry of polymers
Properties and characterization
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Summary:The structural features of poly[bis(4‐isopropylphenoxy)phosphazene] (PB(4‐ip)PP) have been studied by electron microscopy, X‐ray diffraction and differential scanning calorimetry techniques. Its orthorhombic lattice constants are determined as follows: a = 3,14 nm, b = 1,14 nm, c = 0,992 nm. The space group of this polymer is suggested to be P 212121–D 24, and the molecular conformation of the chains possibly to be (trans3cis)2. This polymer exhibits a crystal/crystal transition at 86°C below its T(1) transition (120°C). The thermal behavior is similar to the characteristics of poly[bis(p‐methoxyphenoxy)phosphazene].
ISSN:1022-1336
1521-3927
DOI:10.1002/marc.1995.030160306