TY - JOUR
T1 - Optical cellulose fiber made from regenerated cellulose and cellulose acetate for water sensor applications
AU - Orelma, Hannes
AU - Hokkanen, Ari
AU - Leppänen, Ilona
AU - Kammiovirta, Kari
AU - Kapulainen, Markku
AU - Harlin, Ali
N1 - Funding Information:
Open access funding provided by Technical Research Centre of Finland (VTT). This work was internally funded by VTT with a government grant and formed part of the Academy of Finland's Flagship Program under Project Nos. 318890 and 318891 (Competence Center for Materials Bioeconomy, FinnCERES).
Funding Information:
The manuscript was written through contributions from all authors. H.O. was responsible for preparing the project plan, instructed the research work and wrote the first draft of the article. A.H. performed optical fiber measurements and processed the given data. I.L. was responsible for manufacturing cellulose acetate and regenerated cellulose films, as well as conducting UV–VIS, FTIR measurements and processing the given data. A.H and I.L contribution was equal. K.K. dissolved cellulose and cellulose acetate and prepared optical cellulose fibers. M.K. participated in the optical measurements. A.H. applied for funding for the project and supervised the work. All authors have given their approval to the final version of the manuscript.
Funding Information:
Open access funding provided by Technical Research Centre of Finland (VTT). This work was internally funded by VTT with a government grant and formed part of the Academy of Finland's Flagship Program under Project Nos. 318890 and 318891 (Competence Center for Materials Bioeconomy, FinnCERES).
Publisher Copyright:
© 2019, The Author(s).
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/2/1
Y1 - 2020/2/1
N2 - In this study an optical cellulose fiber for water sensoring was prepared by using a sequential preparation strategy. The core of the fiber was prepared from dissolved cellulose, in [EMIM]OAc, which was dry–wet spun into water. The cladding layer on the cellulose core was produced by coating a layer of cellulose acetate, dissolved in acetone, using a filament coater. The chemical and optical properties of both regenerated cellulose and cellulose acetate were studied from cast films using ultraviolet–visible and Fourier-transform infrared spectroscopy measurements. Regenerated cellulose film was observed to absorb UV light, passing the visible light wavelengths. Cellulose acetate film was observed to pass the whole light wavelength range. The mechanical strength and topography of the prepared optical cellulose fiber were investigated through tensile testing and SEM imaging. The mechanical performance of the fiber was similar to previously reported values in the literature (tensile strength of 120 MPa). The prepared optical fiber guided light in the range of 500–1400 nm. The attenuation constant of the cellulose fiber was observed to be 6.3 dB/cm at 1300 nm. The use of prepared optical cellulose fiber in a water sensor application was demonstrated. When the fiber was placed in water, a clear attenuation in the light intensity was observed. The studied optical fiber could be used in sensor applications, in which easy modifiability and high thermal resistance are beneficial characteristics.
AB - In this study an optical cellulose fiber for water sensoring was prepared by using a sequential preparation strategy. The core of the fiber was prepared from dissolved cellulose, in [EMIM]OAc, which was dry–wet spun into water. The cladding layer on the cellulose core was produced by coating a layer of cellulose acetate, dissolved in acetone, using a filament coater. The chemical and optical properties of both regenerated cellulose and cellulose acetate were studied from cast films using ultraviolet–visible and Fourier-transform infrared spectroscopy measurements. Regenerated cellulose film was observed to absorb UV light, passing the visible light wavelengths. Cellulose acetate film was observed to pass the whole light wavelength range. The mechanical strength and topography of the prepared optical cellulose fiber were investigated through tensile testing and SEM imaging. The mechanical performance of the fiber was similar to previously reported values in the literature (tensile strength of 120 MPa). The prepared optical fiber guided light in the range of 500–1400 nm. The attenuation constant of the cellulose fiber was observed to be 6.3 dB/cm at 1300 nm. The use of prepared optical cellulose fiber in a water sensor application was demonstrated. When the fiber was placed in water, a clear attenuation in the light intensity was observed. The studied optical fiber could be used in sensor applications, in which easy modifiability and high thermal resistance are beneficial characteristics.
UR - http://www.scopus.com/inward/record.url?scp=85076216480&partnerID=8YFLogxK
U2 - 10.1007/s10570-019-02882-3
DO - 10.1007/s10570-019-02882-3
M3 - Article
SN - 0969-0239
VL - 27
SP - 1543
EP - 1553
JO - Cellulose
JF - Cellulose
ER -