Investigation Study into the Addition of Petroleum Wax in Papermaking
| Main Authors: | , , |
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| Format: | Article |
| Language: | English Slovak |
| Online Access: | http://www.viks.sk/chk/res_4_04_211_219.doc |
| Abstract: | SUMMARY. The effect of the addition of different types of waxes on the physical and mechanical properties of Kraft bagasse pulp was investigated. Different concentrations (0.5%, 1.0%, 1.5%, and 2.0%) were used in this study. The results showed that mechanical strength and optical properties of the paper sheets improved for most types of waxes added. The best result for water retention was at a 1.5% concentration of medium distillate furfural wax CONCLUSION. Higher percentages of isoparrafins greatly enhanced the physical and mechanical properties of kraft bagasse pulp. Mechanical properties were increased by the addition of waxes in concentrations of 1.5% for light wax distillates, a concentration of 1% for medium wax distillates and a 0.5% concentration for the heavy wax distillates. The improvement was more pronounced in the case of wax samples prepared from raffinate extracted by furfural. The increase in oil content led to an increase in the penetration value and also tended to decrease the water retention of the treated paper, which meant that the paper became more water repellent. Electronic microscopic studies showed that the addition of wax changed more than 90% of the pulp into a material, which had a plastic-like morphology. It can be concluded that wax acts as a waterproofing agent, which tends to spread and create a hydrophobic surface over the cellulose fibers. It can be presumed that the addition of wax leads to long-term stability of a paper against humidity |
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| ISSN: | 0034-5806 |
