论文部分内容阅读
在相同压力下,与普通(硫酸盐和亚硫酸盐)制浆相比,高沸点有机溶剂制浆能够减少对环境的污染。稻草中的综纤维素、α-纤维素和木素的含量(分别为60.7%,41.2%和21.9%)与一些木材原料(如松木和桉木)及许多非木材原料(包括橄榄枝、麦草和向日葵秆)极为相似,分别使用乙二醇、二甘醇、乙醇胺和二乙醇胺在溶剂量为80%,温度180℃和时间150min,液比1︰6的条件下进行了制浆实验。与乙二醇溶剂相比,使用胺溶剂能够使纸浆拥有更好的性能。用二乙醇胺制得的纸浆有较好的黏度,卡伯指数,打浆度和耐破指数(分别为956mL/g,17.0,21oSR和1.23kPa.m2/g)。用乙醇胺稻草浆抄造的纸张有较好的伸长率(1.99%)、撕裂指数(0.44mN.m2/g)和白度(41.7%)。
At the same pressure, pulping with high-boiling organic solvents can reduce environmental pollution compared to ordinary (sulphate and sulphite) pulping. The contents of holocellulose, alpha-cellulose and lignin (60.7%, 41.2% and 21.9%, respectively) in straw were correlated with some wood raw materials (such as pine and eucalyptus) and many non-wood raw materials including olive branch, Sunflower stalk) were very similar. The pulping experiments were carried out using ethylene glycol, diethylene glycol, ethanolamine and diethanolamine at the solvent volume of 80%, the temperature of 180 ℃, the time of 150min and the liquid ratio of 1: 6, respectively. The use of amine solvents gives the pulp better performance than ethylene glycol. Pulps prepared with diethanolamine had better viscosity, kappa index, beatability and burst index (956 mL / g, 17.0, 21 SOR and 1.23 kPa.m <2> / g, respectively). Paper made with ethanolamine straw had better elongation (1.99%), tear index (0.44 mN.m2 / g) and whiteness (41.7%).