TY - JOUR
T1 - Hydrothermal and mechanically generated hemp hurd nanofibers for sustainable barrier coatings/films
AU - Tyagi, Preeti
AU - Gutierrez, Joseph N.
AU - Nathani, Ved
AU - Lucia, Lucian A.
AU - Rojas, Orlando J.
AU - Hubbe, Martin A.
AU - Pal, Lokendra
N1 - Funding Information:
This work was performed in part at the Analytical Instrumentation Facility (AIF) at North Carolina State University, which is supported by the State of North Carolina and the National Science Foundation (award number ECCS-1542015). The authors are grateful to Chuanzhen Zhou (Elaine) and Ching Chang Chung for their help in conducting ToF-SIMS and XRD analysis.
Publisher Copyright:
© 2021 Elsevier B.V.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/9/15
Y1 - 2021/9/15
N2 - Residual hemp (Cannabis sativa) hurd fibers obtained from hydrothermal, carbonate, and kraft treatments were the resources used to obtain lignocellulosic nanofibers (LCNF) by using an ultra-fine friction grinder. The morphological, crystallinity, and chemical characteristics of the nanocellulose films were carried out using SEM, XRD, EDX and ToF-SIMS. Water barrier properties of the same were measured in terms of water contact angle, water vapor permeability (WVP) and water absorption. The barrier properties were found to be dependent not only on the lignin content and lignin distribution, but also on the film density and porous structure. LCNF films and coatings showed much higher water contact angle (WCA) (80°-102°) than films produced from the bleached CNF. WVP was found to be more dependent on the density of films than lignin content. Overall, LCNF-based films and coatings derived from hemp hurd residual fibers can contribute to a circular economy and sustainability.
AB - Residual hemp (Cannabis sativa) hurd fibers obtained from hydrothermal, carbonate, and kraft treatments were the resources used to obtain lignocellulosic nanofibers (LCNF) by using an ultra-fine friction grinder. The morphological, crystallinity, and chemical characteristics of the nanocellulose films were carried out using SEM, XRD, EDX and ToF-SIMS. Water barrier properties of the same were measured in terms of water contact angle, water vapor permeability (WVP) and water absorption. The barrier properties were found to be dependent not only on the lignin content and lignin distribution, but also on the film density and porous structure. LCNF films and coatings showed much higher water contact angle (WCA) (80°-102°) than films produced from the bleached CNF. WVP was found to be more dependent on the density of films than lignin content. Overall, LCNF-based films and coatings derived from hemp hurd residual fibers can contribute to a circular economy and sustainability.
KW - Barrier coatings
KW - Biodegradable films
KW - Circular economy
KW - Hemp hurds
KW - Lignin-containing cellulose nanofibers
KW - Sustainability
UR - http://www.scopus.com/inward/record.url?scp=85105517409&partnerID=8YFLogxK
U2 - 10.1016/j.indcrop.2021.113582
DO - 10.1016/j.indcrop.2021.113582
M3 - Article
AN - SCOPUS:85105517409
SN - 0926-6690
VL - 168
JO - Industrial Crops and Products
JF - Industrial Crops and Products
M1 - 113582
ER -
