Can I read Morphology of (Methoxyethoxy/trifluoroethoxy)phosphazene Copolymers on EtoBox?

Morphology of (Methoxyethoxy/trifluoroethoxy)phosphazene Copolymers by Morio Kojima; Joseph H. Magill; Michael L. White; Krzysztof Matyjaszewski is a Materials Science article available to read on EtoBox.

What is Morphology of (Methoxyethoxy/trifluoroethoxy)phosphazene Copolymers about?

Block copolymers were synthesized by the anionically initiated copolymerization of (CH,OCH,CH,O)(CF,CH,O),P=NSi(CH,),, followed by the addition of (CF,CH,O),P=NSi (CH,),. Random copolymers were made by simultaneous polymerization of these monomers. These copolymers exhibit a linear dependency on the mole fraction "m" of the repeating units bearing a methoxyethoxy pendant side group as well as on molecular weights. The thermal and morphological characteristics of the block copolymers are different from those of the random copolymers of analogous "m" and molecular weight. All copolymers undergo a mesophase T(1) transition for a range of temperatures depending upon "m" and molecular weights of the copolymers. Morphological and structural features essentially resemble those of the low molecular weight (trifluoroethoxy)phosphazene homopolymer. Upon heating and cooling the solution cast copolymer specimens through T(1), most of them transform into an orthorhombic form with the unit cell dimensions a = 2,060 nm, b = 0,940 nm and c = 0,486 nm from their initial monoclinic form with a = 1,003 nm, b = 0,937 nm, c = 0,486 nm and y = 91 O. These unit cell dimensions agree completely with those

Who reads Morphology of (Methoxyethoxy/trifluoroethoxy)phosphazene Copolymers?

Author

Morio Kojima; Joseph H. Magill; Michael L. White; Krzysztof Matyjaszewski

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1022-1352)

Published

1995

Language

EN

Field

Materials Science (Physical Sciences)