螺旋微流道分级分离纳米纤维素

Spiral Microchannel for Nanocellulose Fractionation

利用螺旋微流控芯片分级分离纳米纤维素,使纳米纤维素按长短依次分布在通道内,从而实现纳米纤维素的分级分离。研究了最小螺旋半径为5 mm,最大螺旋半径为15 mm,螺旋圈数分别为T=4和T=6的单、双螺旋微流控芯片在不同流速下对纳米纤维素分级分离效果的影响。结果表明:流速为80μL/min时为最佳分离流速,其中螺旋圈数为T=6的单螺旋微流控芯片的分级分离效果最佳。

The spiral microfluidic chip is used to fractionate the nanocellulose, so that the nanocellulose is sequentially distributed in the channel to realize the fractionation of the nanocellulose. The effects of single-and double-helical microfluidic chips with a minimum helix radius of 5 mm, a maximum helix radius of 15 mm and T=4 and T=6 on the fractionation of nanocellulose were studied at different flow rates. The results show that the best separation flow rate is 80 μL/min, and the single-helical microfluidic chip has the best classification with the number of spiral turns T=6.