De, Priyadarsi and Sathyanarayana, DN (2002) Oxidative copolymerization of indene with p-tert-butylstyrene: Synthesis, characterization, thermal analysis, and reactivity ratios. In: Journal of Polymer Science Part A: Polymer Chemistry, 40 (1). pp. 9-18.
1.pdf - Published Version
Restricted to Registered users only
Download (195Kb) | Request a copy
Copolyperoxides of indene and p-tert-butylstyrene of different compositions were synthesized by free-radical-initiated oxidative copolymerization. The compositions of the copolyperoxides, obtained from H-1 and C-13 NMR spectra, were used to calculate the reactivity ratios of the monomers. The reactivity ratios indicated a larger proportion of indene units in random placement in the copolyperoxides. Thermal-degradation studies by differential scanning calorimetry and electron-impact mass spectrometry supported alternating peroxide units in the copolymer backbone. The activation energy for thermal degradation suggested that the degradation was dependent on the dissociation of the peroxide (-O-O-) bonds in the backbone of the copolyperoxide chain. The flexibility of the copolyperoxides was examined in terms of the glass-transition temperature.
|Item Type:||Journal Article|
|Additional Information:||Copyright of the of article belongs to John Wiley and Sons.|
|Keywords:||copolymerization with oxygen;molecular weight;reactivity ratios;differential scanning calorimetry (DSC);exothermic degradation|
|Department/Centre:||Division of Chemical Sciences > Inorganic & Physical Chemistry|
|Date Deposited:||18 Nov 2009 11:34|
|Last Modified:||19 Sep 2010 04:57|
Actions (login required)