生物法提取桑皮纤维漂白工艺的研究与优化

研究生物法提取桑皮纤维的最佳漂白工艺。【方法】采用回归正交组合设计,研究了碱(NaOH)用量、漂白剂(H2O2)用量、水料比、漂白温度及漂白时间对生物法提取桑皮纤维漂白的技术参数。【结果】(1)各因子对纤维白度的影响程度依次为:漂白温度>漂白时间>碱用量>漂白剂用量>水料比,漂白温度是漂白过程中的关键控制因素。(2)因子交互效应分析显示,碱用量与漂白温度、漂白剂用量与漂白时间、料水比与漂白时间通过互作产生了增白效应。【结论】通过对纤维白度模型的优化,得到的最佳漂白工艺参数为:碱用量2.05 g/L,漂白剂用量6%,水料比16.7∶1,漂白温度112℃,漂白时间125 min。在最佳工艺参数条件下,纤维白度可达75.0以上,经反复试验验证,该工艺正确可行。

The bleaching technology for mulberry fiber by bio-extraction was studied and the technological conditions were optimized.【Method】 The effects of NaOH,H2O2,temperature,time,and the ratio of water/fiber on the bleaching of mulberry fiber by bio-extraction was studied.A mathematical model of the relationship for these factors with fiber whiteness was established by using the five-way quadratic orthogonal regression design.【Result】(1)The effects of five factors on the fiber whiteness were:bleaching...