STUDYING THE EFFECT OF BENZOPHENONE ON THERMAL DEGRADATION OF CELLULOSE DIACETATE

The induced thermal degradation of cellulose diacetate (CDA) was investigated in the absence and presence of benzophenone (BPH). CDA are prepared in the laboratory from filter paper, which is characterizated by spectrophotometry (infrared and ultraviolet visible) techniques in addition to the determination of the degree of substitution. The addition of (0.5 wt %) of benzophenone to cellulose diacetate enhanced the thermal degradation of the polymer. Themal degradation rate was measured by ultraviolet visible spectra, decreasing in viscosity and reduction of molecular weight were also observed in the degraded samples. Changes in the numberaverage chain scission and the degree of deterioration. Which were evaluated by analytical techniques indicated that the benzophenone enhance the thermal degradation of cellulose diacetate .