3D structure of lightweight, conductive cellulose nanofiber foam

被引：32

作者：

Lee, Hwarueon ^{[1
,2
]}

Kim, Sunga ^{[1
]}

Shin, Sungchul ^{[1
]}

Hyun, Jinho ^{[1
,2
,3
]}

机构：

[1] Seoul Natl Univ, Dept Biosyst & Biomat Sci & Engn, Seoul 08826, South Korea

[2] Seoul Natl Univ, Dept Agr Forestry & Bioresources, Seoul 08826, South Korea

[3] Seoul Natl Univ, Res Inst Agr & Life Sci, Seoul 08826, South Korea

来源：

CARBOHYDRATE POLYMERS | 2021年 / 253卷

基金：

新加坡国家研究基金会;

关键词：

Lihgtweight; Cellulose nanofiber; Foam; 3D printing; Template; Conductive; Polypyrrole;

D O I：

10.1016/j.carbpol.2020.117238

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

We investigate the three-dimensional (3D) structuring of cellulose nanofiber (CNF) foam-based ink using direct ink writing 3D printing and the transformation of CNF foam from an insulator to a conductor. The colloidal stability of a CNF foam is critical to producing a solid CNF foam which can be used as a template for the synthesis of conducting polymers. Liquid CNF foam ink is produced by simple stirring of CNF suspension with sodium dodecyl sulfate as an emulsifier. The shear thinning behavior of the liquid CNF foam ink enables printing through a needle. Flexible design of CNF foam structures is enabled by 3D printing using computer-aided design. Lightweight conductive CNF foams are prepared via in situ polymerization of polypyrrole on a solid CNF foam. The topological features of the resultant porous conductive CNF foams are observed, and their conductivity is investigated.

引用

页数：12