Conductive Cellulose based Foam Formed 3D Shapes—From Innovation to Designed Prototype
Open Access
- 31 January 2019
- Vol. 12 (3), 430
- https://doi.org/10.3390/ma12030430
Abstract
In this article, we introduce for the first time, a method to manufacture cellulose based electrically conductive non-woven three-dimensional (3D) structures using the foam forming technology. The manufacturing is carried out using a minimum amount of processing steps, materials, and hazardous chemicals. The optimized solution applies a single surfactant type and a single predefined portion for the two main processing steps: (1) the dispersing of nanocellulose (NC) and carbon nanotubes (CNT) and (2) the foam forming process. The final material system has a concentration of the used surfactant that is not only sufficient to form a stable and homogeneous nanoparticle dispersion, but it also results in stable foam in foam forming. In this way, the advantages of the foam forming process can be maximized for this application. The cellulose based composite material has a highly even distribution of CNTs over the NC network, resulting a conductivity level of 7.7 S/m, which increased to the value 8.0 S/m after surfactant removal by acetone washing. Also, the applicability and a design product case ‘Salmiakki’ were studied where the advantages of the material system were validated for a heating element application.Funding Information
- Tekes (0000)
This publication has 21 references indexed in Scilit:
- 3D-oriented fiber networks made by foam formingCellulose, 2015
- Characteristics of Piezoelectric Polymer Film Sensors With Solution-Processable Graphene-Based Electrode MaterialsIEEE Sensors Journal, 2015
- Ultra-lightweight paper foams: processing and propertiesCellulose, 2014
- Cellulose nanofibrils: Challenges and possibilities as a paper additive or coating material – A reviewNordic Pulp & Paper Research Journal, 2014
- A review of nanocellulose as a novel vehicle for drug deliveryNordic Pulp & Paper Research Journal, 2014
- Potential of foam-laid forming technology in paper applicationsNordic Pulp & Paper Research Journal, 2013
- The effect of MFC on the pressability and paper properties of TMP and GCC based sheetsNordic Pulp & Paper Research Journal, 2012
- Joule heating in single-walled carbon nanotubesJournal of Applied Physics, 2009
- Toward full carbon interconnects: High conductivity of individual carbon nanotube to carbon nanotube regrowth junctionsApplied Physics Letters, 2009
- A standard method to calibrate sonochemical efficiency of an individual reaction systemUltrasonics Sonochemistry, 2003