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| Titel: |
Cadmium Chloride Catalyzed Degradation of PVC-Effect of Temperature and Concentration |
| Auteur: |
Sarwar, M. I. Rafiq, S. Yousaf, S. M. Ahmad, Z. |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 41 (1998) nr. 3-4 pagina's 185-197 |
| Jaar: |
1998-08-01 |
| Inhoud: |
Conductometric and UV-visible spectroscopic techniques were used to study the effect of temperature and concentration on cadmium chloride catalyzed degradation of PVC. HC1 evolved during degradation was measured for pure PVC and the samples containing 1-2 mol% of CdCl2 by conductometric technique. Films of PVC containing CdCl2 were degraded in an oven at different temperatures and UV-visible spectroscopic analyses were carried out. Spectroscopic results indicated that polyene linkages are formed and the formation of H+CdCl-3 complex with them show absorption at 485, 430 and 360 nm for the films degraded at 100, 150 and 180± 1°C respectively. This was explained due to decrease in the average size of conjugated chain forming complex with increase in the degradation temperature. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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