CSIR Central


Field	Value

Creator	Chattopadhyay, D.K SivaSankar, P Raju, K.V.S.N

Date	2008-12-11T06:45:48Z 2008-12-11T06:45:48Z 2004

Identifier	Journal of the Japanese Society of Color Material, Vol.77( 12);540-547p http://hdl.handle.net/123456789/37

Description	An effort has been made to understand the structure property correlation with different chain extender structure. For these, different moisture cured polyurethanes were synthesized and partially chain extended with various aromatic diamines. The remaining excess isocyanates in the polyurethane matrix were reacted with atmospheric moisture. Viscoelastic properties of these cured films were determined by Dynanaic Mechanical Thermal Analyzer (DMTA). The mechanical properties such as tensile strength, adhesion strength and hardness were related to chemical composition and cohesion of the hard segment. Angle resolved X-ray Photoelectron Spectroscopy (ARXPS) was used to determine the surface properties. Thc combined analysis indicates the degree of phase separation 4 s the cause for the overall macroscopic properties and is dependent on the chain extender structure

Subject	Moisture cured polyurethanes Hard segment structure Mechanical Adhesion and surface properties

Title	Properties of Diamine Chain Extended Polyurethane Urea Coatings

Type	Article