Numerical simulation on electrostatic alignment control of cellulose nano-fibrils in flow

被引：7

作者：

Takana, Hidemasa ^{[1
]}

Guo, Mengfei ^{[1
,2
]}

机构：

[1] Tohoku Univ, Inst Fluid Sci, Sendai, Miyagi, Japan

[2] Tohoku Univ, Dept Mech & Aerosp Engn, Sendai, Miyagi, Japan

来源：

NANOTECHNOLOGY | 2020年 / 31卷 / 20期

关键词：

cellulose nano-fibril; alignment; cellulose filament; electrostatic alignment; elongational flow; numerical simulation; WALL CARBON NANOTUBES; AC ELECTRIC-FIELD; ORIENTATION; ELECTROPHORESIS; ANISOTROPY; FILMS;

D O I：

10.1088/1361-6528/ab703d

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The alignment process of the cellulose nano-fibrils (CNFs) in an alternating electric field and elongational flow is numerically simulated for the fabrication of strong cellulose filaments. The order parameter of CNFs in the flow channel is evaluated by solving the Smoluchowski equation for the orientation distribution function of the CNFs. The results show that CNF alignment in the electric field is enhanced with applied voltage because the electrostatic torque is dominant over the Brownian rotation. An optimal fibril length is shown to exist for electrostatic alignment coupled with elongational flow effect.

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页数：7

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