Abstract
Effect of crystallization on damping properties of organic hybrid prepared from a mixture of chlorinated polyethylene (CPE) / N, N’-dicyclohexyl-2-benzothiazolylsulfenamide (DBS) was investigated. The as-produced mixture were annealed at 25°C, 60°C and 80°C respectively, for different period so as experience the different crystallization history. DSC measurement as well as SEM observation showed that the crystallization can be accelerated by increasing the annealing temperature; meanwhile, the melting process becomes narrow and the melting peak point shifts to higher temperatures. As a consequence of the great change in crystalline morphology, both the storage modulus and the loss modulus in glass transition changes remarkably, indicating that the damping properties of the organic hybrid might be controlled through the control of crystallization history. Further studies by Energy-Dispersive X-ray Spectrometry (EDX) revealed that there exists a supramolecular organization between CPE and DBS even in the crystalline domains. The organic hybrid with such kind of architecture results in the good damping behavior which is definitely different from that of inorganic/polymer composition.
