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Conductive cellulose based foam formed 3D shapes—from innovation to designed prototype

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Conductive cellulose based foam formed 3D shapes—from innovation to designed prototype. / Siljander, Sanna; Keinänen, Pasi; Ivanova, Anastasia; Lehmonen, Jani; Tuukkanen, Sampo; Kanerva, Mikko; Björkqvist, Tomas.

In: Materials, Vol. 12, No. 3, 430, 31.01.2019.

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@article{8f7ef0a7995f481dbb9ced9f75150ad7,
title = "Conductive cellulose based foam formed 3D shapes—from innovation to designed prototype",
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.",
keywords = "Carbon nanotube, Conductivity, Foam forming, Nanocellulose, Salmiakki",
author = "Sanna Siljander and Pasi Kein{\"a}nen and Anastasia Ivanova and Jani Lehmonen and Sampo Tuukkanen and Mikko Kanerva and Tomas Bj{\"o}rkqvist",
year = "2019",
month = "1",
day = "31",
doi = "10.3390/ma12030430",
language = "English",
volume = "12",
journal = "Materials",
issn = "1996-1944",
publisher = "MDPI AG",
number = "3",

}

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TY - JOUR

T1 - Conductive cellulose based foam formed 3D shapes—from innovation to designed prototype

AU - Siljander, Sanna

AU - Keinänen, Pasi

AU - Ivanova, Anastasia

AU - Lehmonen, Jani

AU - Tuukkanen, Sampo

AU - Kanerva, Mikko

AU - Björkqvist, Tomas

PY - 2019/1/31

Y1 - 2019/1/31

N2 - 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.

AB - 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.

KW - Carbon nanotube

KW - Conductivity

KW - Foam forming

KW - Nanocellulose

KW - Salmiakki

UR - http://www.scopus.com/inward/record.url?scp=85060971565&partnerID=8YFLogxK

U2 - 10.3390/ma12030430

DO - 10.3390/ma12030430

M3 - Article

VL - 12

JO - Materials

JF - Materials

SN - 1996-1944

IS - 3

M1 - 430

ER -