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| Titel: |
PROPERTIES OF PAPER SHEETS PREPARED FROM IN-SITU SYNTHESIS OF CUPRITE IN WOOD PULP FIBERS |
| Auteur: |
Basta, Altaf H. Fadl, Naim A. Abd-El-Messieh, Salwa L. |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 51 (2002) nr. 4 pagina's 325-349 |
| Jaar: |
2002-04 |
| Inhoud: |
Wood pulp-cuprite paper sheets were prepared from in-situ synthesis of copper(I)-oxide in wood pulp fibers, to study its effect on fire retardant property. Factors such as the amount of copper sulfate, amount of reducing carbohydrate, pH-value, temperature and the amount of carboxymethyl cellulose were studied to derive the optimum conditions for the formation of Cu(I)O with maintaining or improving the strength properties of the prepared paper sheets. The X-ray diffraction was used to identify the formation of Cu(I)O inside the fibers; while FTIR-spectroscopy analysis was used to clarify the behaviour of Cu(I)O inside the fibers. The electrical properties of the prepared paper sheets, e.g., AC-conductivity ( σ), dielectric constant ( o¯') and dielectric loss ( o¯") were also examined. The thermal degradation behaviour of some prepared paper sheets has been studied by means of non-isothermal thermogravimetric analysis, and the kinetic parameters were estimated by using Coats and Redfern equation. The results obtained show a good relation between the amount of formed cuprite with the mechanical and electrical properties of the produced sheets. The formation of cuprite in wood pulp fibers improves the fire retardants property of the paper sheets; while the addition of CMC during cuprite formation diminishes this effect. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 4 gevonden artikelen
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