Treatment of purified wood pulp with 18% sodium hydroxide solution produces alkali cellulose. 用18%氢氧化钠溶液处理纯化木浆生产出碱性纤维素。
Viscose manufacturing process involves the reaction of cellulose with sodium hydroxide to form an alkali cellulose. 粘胶的生产过程包括纤维素与氢氧化钠反应形成碱纤维素的过程。
HPMC is prepared when a purified form of cellulose is reacted with sodium hydroxide solution to produce a swollen alkali cellulose that is chemically more reactive than untreated cellulose. 当被净化的纤维素与氢氧化纳溶液反应产生一种膨胀碱性纤维素时,HPMC就产生了,这种纤维素在化学上比没有经过处理的纤维素更易起反应。
The alkali cellulose is then treated with carbon disulfide to form cellulose xanthate. 碱纤维素再经二硫化碳处理制成纤维素黄酸酯。
Aim High-pressure steam explosion treatment was carried out on cellulose ( purified cotton linter and wood pulps treated by alkali solution) to study the effect on the super-molecular structure of cellulose. 目的研究高压蒸气闪爆对原始精制棉和碱处理精制棉、木浆超分子结构的影响。
In some instances, tendering of the fiber may not be apparent until the fibre has been treated with alkali, and therefore the determination of tensile strength of bleached cotton fabric alone can not detect the actual extent of the degradation of cellulose. 在某些情况下,已经损伤的纤维在经受碱处理以前并不明显地变得脆弱,因此仅仅测定漂白后棉织物的强度并不能检验出纤维素退化的真实程度。
The high viscosity HPMC was prepared as the supplements of medicine. The factors of synthesis, for example alkali cellulose, concentration and ratio of the mixed etherifying agents, and product aftertreatment were studied. 本文研究了药物缓释材料HPMC的合成方法,探讨了碱纤维素制备,醚化剂浓度,混合醚化剂配经以及产品后处理对高粘度HPMC的影响。
Refined cotton is one kind of high-purity cellulose product, obtained by the refining treatment of Cotton linter, i.e. alkali cooking and bleaching. Refined cotton is mainly used in the manufacture of cellulose esters, ethers and other cellulose derivatives. 精制棉是棉短绒经碱法蒸煮、漂白等精制处理后所得的一种高纯度的纤维素产品,主要用于制造纤维素酯类、醚类及其他纤维素衍生物。
When the concentration is too high, alkali destroys cellulose in fibers, resulting in fiber surface damage and excessive degumming. At the same time, fiber surface becomes rugged, which has an influence on surface smoothness and glossiness. 但当碱液浓度增加到一定程度,碱液会破坏纤维中的纤维素,导致纤维表面被破坏或过分脱胶,纤维表面将出现凹凸不平的情况,影响纤维表面光滑程度及其光泽度。
The conventional bleaching processes using hydrogen peroxide of cotton fabrics need high temperature and strong alkali with high energy consumption and aggressive damage of cellulose fiber. The hydrogen peroxide bleaching efficiency is low, which causes a great waste of resources. 传统棉型织物双氧水漂白通常采用高温强碱工艺,不仅能耗高,而且漂后织物损伤严重,双氧水漂白效率低,对资源造成了极大浪费。