Article
Chemistry, Applied
Jatin Sethi, Lars Wagberg, Per A. Larsson
Summary: A novel method for preparing a hybrid gibbsite-cellulose nanofibril nanocomposite film with improved wet and dry mechanical properties and barrier properties is reported. The film showed enhanced properties after reverse charging the gibbsite and inducing ionic interaction between cellulose nanofibrils (CNFs) and gibbsite. The oxygen and water vapor barrier properties of the film were significantly improved.
CARBOHYDRATE POLYMERS
(2022)
Article
Nanoscience & Nanotechnology
Md Nuruddin, Reaz A. Chowdhury, Ryan Szeto, John A. Howarter, Kendra A. Erk, Caroline R. Szczepanski, Jeffrey P. Youngblood
Summary: The study found that CNC-PVA films exhibit excellent barrier performance, even higher than traditional polymers and high barrier ethylene-vinyl alcohol copolymer films. In addition, the moisture sensitivity of the films decreased with the addition of PVA.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Taylor C. Stimpson, Daniel A. Osorio, Emily D. Cranston, Jose M. Moran-Mirabal
Summary: In this study, three buckling-based methods were compared to determine the elastic moduli of supported thin films, showing that these methods are similarly effective for quantifying thin-film mechanical properties. Increasing the content of cellulose nanocrystals in the films increased the modulus, while increasing the content of polyethyleneimine did not lead to significant changes. Biaxial thermal shrinking was found to be a reliable method for determining the mechanical properties of thin films.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Hyeonho Cho, Ahmad Shakil, Andreas A. Polycarpou, Sunghan Kim
Summary: In this study, a new type of bionanofilm was successfully developed through water vapor annealing, using graphene oxide, silk fibroin, and cellulose nanocrystals. The mechanical properties of the film were altered only in the in-plane direction after annealing, while remaining unchanged in the thickness direction.
Article
Chemistry, Applied
Cong Chen, Wenjing Sun, Jinwu Wang, Douglas J. Gardner
Summary: Cellulose nanocrystals (CNCs) are considered as a potential renewable and biodegradable packaging material with desirable properties. However, neat CNC films are too rigid and brittle for packaging applications. By adding different additives, the properties of CNC films can be improved, such as enhancing transparency, improving water durability, and changing hydrophilicity. All CNC films show sufficient oxygen barrier properties.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Multidisciplinary
Tal Ben Shalom, Shylee Belsey, Michael Chasnitsky, Oded Shoseyov
Summary: The study prepared different CNC and CZ composite films by adding CZ to the CNC suspension and incorporating the non-toxic cross linker BTCA, showing significantly improved water vapor and oxygen barrier properties for flexible packaging industry. The inclusion of CZ not only enhanced the barrier properties, but also increased the flexibility and thermal stability of the CNC/CZ composite films.
Article
Chemistry, Applied
Ziyue Song, Tiancong Ma, Xiujuan Zhi, Bin Du
Summary: The methods to obtain cellulose-chitosan composite films with excellent water-resistance and antibacterial abilities have been widely explored. The occurrence of nonenzymatic browning at 80 degrees C improved the thermal stability and oxygen barrier properties of the membranes, while significantly enhancing their antibacterial capability. Immobilized polycationic chitosan-citric complex in the films retained excellent antibacterial ability and showed potential applications in food packaging with excellent decontamination in meat preservation.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Julia Fernandez-Santos, Cristina Valls, Oriol Cusola, M. Blanca Roncero
Summary: Different types and amounts of additives have a significant impact on the performance of cellulose nanocrystal films, with most additives performing well at low doses to improve mechanical and barrier properties while reducing permeance. Films containing sorbitol, xylitol, and maltitol exhibited the highest barrier properties, providing total resistance to oxygen. Interestingly, films with additives were more easily biodegraded compared to control films.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Applied
Lanxing Du, Haonan Yu, Bohan Zhang, Ruilin Tang, Yang Zhang, Chusheng Qi, Michael P. Wolcott, Zhiming Yu, Jinwu Wang
Summary: Transparent films with symmetric sandwich structure were designed using layer-by-layer assembly of biaxially oriented polypropylene (BOPP) and acrylic resin (AR) with a cellulose nanoparticle (CNP) layer. The aspect ratio of CNPs affected film microstructure, resulting in different oxygen transmission rates (OTR). Well-organized CNP layer exhibited lower OTR compared to network layer, with thickness, density, and porosity of CNP layer correlating with OTR. Water vapor transmission rate (WVTR) increased due to additional water pathway, while these cellulose composite films showed excellent light transmittance and tensile strength.
CARBOHYDRATE POLYMERS
(2021)
Article
Materials Science, Paper & Wood
Hyeonho Cho, Giuk Lee, Vladimir V. Tsukruk, Sunghan Kim
Summary: Monitoring physiological signals in real time using a durable biomaterial-based arterial pulse thin-film sensor is a practical approach to prevent diseases and improve wearable healthcare monitoring devices.
Review
Chemistry, Multidisciplinary
Lars Wagberg, Johan Erlandsson
Summary: This review discusses the current knowledge about the formation of layer-by-layer (LbL) self-assemblies using combinations of nanocelluloses (NCs) and polyelectrolytes. It focuses on the fundamentals behind LbL formation with a special emphasis on NCs, as well as the limiting factors for the formation of LbLs of only NCs and the combination of NCs and polyelectrolytes/nanoparticles. The review also highlights the ability of NCs and polyelectrolytes to form dense films with excellent mechanical properties and tailored optical properties, and explores the potential uses of LbLs containing NCs.
ADVANCED MATERIALS
(2021)
Article
Polymer Science
Beatriz Melendez-Rodriguez, Sergio Torres-Giner, Lorenzo Zavagna, Chris Sammon, Luis Cabedo, Cristina Prieto, Jose M. Lagaron
Summary: In this study, electrospinning technology was used to successfully process EVOH44 copolymer with cellulose nanocrystals (CNCs), resulting in hybrid nanocomposite films with improved properties. Increasing the CNCs content led to enhancements in mechanical properties, but also accompanied by reductions in certain aspects of performance. Furthermore, the oxygen barrier properties of the films remained high at different relative humidities, demonstrating great potential as barrier materials for food packaging.
Article
Chemistry, Physical
Chao-Peng Wang, Hao Sun, Gang Bian, Jia-Xi Wang, Xixi Pang, Guoqi Wang, Jian Zhu, Xian-He Bu
Summary: Using layered double hydroxide (LDH) nanosheets as a model 2D electrocatalyst, the performance of water splitting can be enhanced by assembling them in an organized structure with hydrophilic polyelectrolytes or nanoparticles in a layer-by-layer (LbL) fashion. The mass activity can be significantly increased, and the LDH nanofilms show excellent stability on three-dimensional surfaces. Furthermore, the LbL assembly with Pt nanoparticles enables efficient overall water splitting. This study highlights the importance of spatial control in the design of advanced electrocatalysts.
Review
Materials Science, Paper & Wood
Martin A. Hubbe
Summary: The research focuses on using polyelectrolyte complexes (PECs) in barrier films to decrease permeation of oxygen and other substances into and out from packages by combining positively and negatively charged polymers and platy mineral particles to resist diffusion. Factors affecting barrier performance of PEC-based films are discussed.
Article
Engineering, Multidisciplinary
Xing Cao, Yaqi Wang, Hang Chen, Jinjing Hu, Li Cui
Summary: This study explicitly demonstrates the influence of nanocellulose with different aspect ratios on the performance of PLLA/PDLA, acting as a nucleating agent to promote crystallization and assist in forming stereocomplex crystallites. ACNS and ACNC have significant effects on crystallinity and oxygen barrier performance, while ACNF has the greatest impact on tensile properties, with minimal effects on transparency and haze of films. These findings have important implications for the preparation of PLA composite materials for various applications.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Polymer Science
Maud Chemin, Anne-Laure Wirotius, Frederique Ham-Pichavant, Guillaume Chollet, Denilson Da Silva Perez, Michel Petit-Conil, Henri Cramail, Stephane Grelier
EUROPEAN POLYMER JOURNAL
(2015)
Article
Forestry
Maud Chemin, Alex Rakotovelo, Frederique Ham-Pichavant, Guillaume Chollet, Denilson da Silva Perez, Michel Petit-Conil, Henri Cramail, Stephane Grelier
Article
Chemistry, Applied
Maud Chemin, Alex Rakotovelo, Frederique Ham-Pichavant, Guillaume Chollet, Denilson Da Silva Perez, Michel Petit-Conil, Henri Cramail, Stephane Grelier
CARBOHYDRATE POLYMERS
(2016)
Article
Chemistry, Physical
Maud Chemin, Pierre-Marie Brun, Sebastien Lecommandoux, Olivier Sandre, Jean-Francoise Le Meins
Article
Biochemistry & Molecular Biology
Julien Rosselgong, Maud Chemin, Cedric Cabral Almada, Gauvin Hemery, Jean-Michel Guigner, Guillaume Chollet, Gilles Labat, Denilson Da Silva Perez, Frederique Ham-Pichavant, Etienne Grau, Stephane Grelier, Sebastien Lecommandoux, Henri Cramail
Article
Chemistry, Multidisciplinary
Maud Chemin, Baptiste Beaumal, Bernard Cathala, Ana Villares
Article
Green & Sustainable Science & Technology
Maud Chemin, Celine Moreau, Bernard Cathala, Ana Villares
JOURNAL OF RENEWABLE MATERIALS
(2020)