落棉纳米纤维素的制备及其改性粘胶面膜基布研究

Study on the Preparation of Noil Nanocelluloseand ItsModified Rayon Mask Substrate

以落棉为原材料,采用硫酸水解协同超声波法提取纳米纤维素,并对其进行表征。设计不同浓度梯度的纳米纤维素改性粘胶面膜基布,重点探究纳米纤维素对面膜基布带液率与保水性的影响。结果表明,改性粘胶面膜基布的带液率随着CNC浓度的增大呈现先增大后减小的趋势;粘胶面膜基布在CNC浓度为1%时带液率最高,可达11.27;5%CNC时保水性好,但初始带液率低。综合考虑成本、带液率和前30min的保水性,发现1%CNC改性粘胶面膜基布的效果最好。

By taking noil fibers as the raw material, the nanocellulose was extracted by using the sulfuric acid hydrolysis method and the characterization was made. Nanocellulose modified rayon mask substrate with different concentration gradients were designed,and the effects of nanocellulose on the liquid carrying rate and water retention of the mask substrate were explored. The results showed that the liquid carrying rate of the modified rayon mask substrate increased first and then decreased with the increase of CNC concentration. The adhesive mask substrate had the highest liquid ratio when the concentration of CNC was 1%, which was up to 11. 27;the water retention was good at 5% CNC, but the initial liquid carrying rate was low. Considering cost, liquid carrying rate and water retention for the first 30 minutes, it was found that the 1% CNC modified rayon mask substrate had the best effect.