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日本制浆厂欲将南非种植的桉木(光亮桉、谷桉、巨桉和蜜味桉)作为原料用于制浆和造纸,探讨了这类桉木的蒽醌硫酸盐法制浆和全无氯漂白的特性。在实验的几种桉木中,谷桉的密度最大,为0.665g/cm3,其次为蜜味桉。实验结果表明,谷桉最易脱木素,且具有最好的蒸煮和漂白性能;谷桉的Klason木素含量为22.8%,比光亮桉的Klason木素含量稍高,但比巨桉和蜜味桉的稍低;通过碱性硝基苯氧化分析可知,谷桉丁香醛与香草醛的摩尔比最高(为4.18);这些结果说明,谷桉在蒸煮和漂白过程中会有好的脱木素性能。实验的几种漂白桉木浆均具有较高的白度,其中漂白谷桉浆的白度最高(达86.7%)。
Japanese pulp mills want to use eucalyptus (bright eucalyptus, eucalyptus, giant eucalyptus and honey eucalyptus) planted in South Africa as raw materials for pulp and papermaking, and discuss the anthraquinone sulphate pulping Chlorine-free bleaching properties. Among several eucalyptus species tested, the density of Eucalyptus grandis was the highest, 0.665 g / cm3, followed by Honey eucalyptus. The results showed that Eucalyptus grandis most easily delignified, and has the best cooking and bleaching properties; Eucalyptus Klason lignin content of 22.8%, slightly higher than that of Eucalyptus Klason lignin content, but Eucalyptus and honey Eucalyptus slightly lower; through alkaline nitrobenzene oxidation analysis shows that the eucalyptus syringa and vanillin the highest molar ratio (4.18); These results show that eucalyptus in the cooking and bleaching process will have a good off wood Prime performance. The bleached eucalyptus pulp had higher whiteness, and bleached eucalyptus pulp had the highest degree of whiteness (up to 86.7%).