【摘要】 本文建议了测定纤维素纤维侧序的一个新方法。所根据的原理是用失重法测定纤维在一系列不同浓度(0—2N)的氢氧化钠溶液中的密度。由于溶胀剂不断透入纤维,测得的密度逐级改变;用密度的增值对氢氧化钠溶液的浓度作图,即得到侧序分布。对由于纤 维在高浓度氢氧化钠溶液中的部分溶解而引起的小量误差进行了校正。在方法的直接、简单、快速、具有高分辨能力和重现性方面,本方法似乎都胜过现用一般测定侧序的方法,而侧序确又是表征纤维素纤维超分子结构的最重要因素。更多还原

【Abstract】 A new method of determination of the lateral order of cellulose fibres is proposed. It is based on the measurement of the density of the fibre by the loss of weight method in a series of sodium hydroxide solutions of increasing concentration from zero to 2N. Due to the gradual penetration of the swelling agents into the fibre texture, the density values change step by step, the increments of density being plotted against sodium hydroxide concentrations to yield the lateral order distribution curve. The slight error resulting from the partial solubility of the fibre in sodium hydroxide of higher concentrations is corrected. The method is direct, simple, quick, of high power of resolution and good reproducibility. It seems to possess many advantages over current methods of studying lateral order which in turn is the most essential element in the characteriza-tion of the supermolecular structure of cellulose fibres.更多还原