碱氧一浴脱胶法功能性大麻纤维的研究

文章对比了碱氧一浴脱胶法对大麻原麻进行脱胶过程中,采用水浴处理和石墨烯溶液浴处理得到的大麻纤维的性能。实验结果表明,与水浴相比,石墨烯溶液处理可以提高脱胶大麻纤维的强力,降低残胶率,提高导热性。

棕榈纤维的制备及基本性能测试

通过正交试验对棕榈纤维的脱胶工艺进行研究与改进,以脱胶率为标准,确定棕榈纤维碱氧法脱胶最优工艺:20 g/L NaOH,40 mL/L H;O;溶液,浴比1∶100,90℃恒温水浴处理3.0 h。并对脱胶后棕榈纤维的化学组成、表面形态、聚集态结构、红外光谱、力学性能、热学性能进行测试分析。结果表明,经碱氧法脱胶后的棕榈纤维大部分胶质被除去,脱胶效果明显,脱胶后的纤维虽然断裂强度有所下降,但纤维素含量显著上升,热稳定性好,为棕榈纤维的进一步开发利用提供了依据。

Tentative Research of Short Process of Jute Degumming and Bleaching

The feasibility of combination process of jute degumming and bleaching with alkali-hydrogen peroxide in one-step-one-bath was discussed. The combination process basically has the similar function as the traditional two-step-two-bath method. The factors such as hydrogen peroxide concentration, CBI concentration, sodium hydroxide concentration, treatment time and temperature were studied respectively, and then an orthogonal experiment was designed to study the interactions among the hydrogen peroxide concentration, CBI concentration, sodium hydroxide concentration. After the designed experiments, the optimum treatment conditions were obtained as follows: hydrogen peroxide of 12g/L, sodium hydroxide of 4g/L, CBI of 4g/L, JFC of 1g/L, treatment time of 60min and temperature of 75℃.