New Semifluorinated Siloxane-Grafted Copolyimides: Synthesis and Comparison with Their Linear Analogs
(391–400)Macromolecular Materials and Engineering 296 #5 (2011)
Ghosh et al of the Leibniz-Institut für Polymerforschung Dresden, Germany  and the Indian Institute of Technology, India, prepared a siloxane-grafted new diamino monomer DBPDMS  and used as a co-monomer in combination with the fluorinated diamine monomer TFBB to prepare siloxane-grafted polyimides.  DSC revealed melting of the grafted siloxane chain at sub-ambient temperature and a glass transition corresponding to the main polymer chain at high temperature.  Isothermal gravimetric analysis at 350 °C indicated that grafted siloxane moiety can be removed thermally from the polymer chain without affecting the polymer backbone.  (RDC 5/26/2011) (See Silicones)