Effect of endoglucanase and high-pressure homogenization post-treatments on mechanically grinded cellulose nanofibrils and their film performance

Xu, Ying; Yang, Shuang; Zhao, Peitao; Wu, Min; Song, Xueping; Ragauskas, Arthur J.

doi:10.1016/j.carbpol.2020.117253

Cited by 34 publications

(9 citation statements)

References 52 publications

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“…Therefore, the observed increase in roughness and the lamellar structure suggest a good interaction between PVA and nanocellulose. These findings align with previous work that employed ultra-fine friction grinding to obtain different samples from pure nanocellulose [14].…”

Section: Morphologysupporting

confidence: 91%

Tailoring Hydrogel Structures: Investigating the Effects of Multistep Cellulose Defibrillation on Polyvinyl Alcohol Composites

de Lima,

Aggio,

Pedro

et al. 2024

Gels

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Defibrillating cellulose through various grinding steps and incorporating it into hydrogels introduces unique properties that warrant thorough exploration. This study investigates cellulose defibrillation at different steps (15–120) using an ultra-fine friction grinder, blended with high-molecular-weight polyvinyl alcohol (PVA), and crosslinked via freeze–thawing. A critical discovery is the influence of defibrillation on the hydrogel structure, as evidenced by reduced crystallinity, thermal degradation, and the enhanced swelling of PVA chains. Despite an increased elastic modulus of up to 120 steps, the synthesized material maintains remarkable strength under hydrated conditions, holding significant promise in biomaterial applications.

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Section: Morphologysupporting

confidence: 91%

Tailoring Hydrogel Structures: Investigating the Effects of Multistep Cellulose Defibrillation on Polyvinyl Alcohol Composites

de Lima,

Aggio,

Pedro

et al. 2024

Gels

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show abstract

“…6c ) of all CNF films showed a multilayer structure, which was similar to previously reported CNF films obtained by suction filtration method. 30 In addition, the cross-sections of SCCNF-f and SCCNF-f-4 films were more uniform and compact than the cross-sections of BLCNF-f and H 2 SO 4 –CNF-f films. The latter two showed chaotic stratification and small aggregations, respectively.…”

Section: Resultsmentioning

confidence: 96%

Production of cellulose nanofibrils and films from elephant grass using deep eutectic solvents and a solid acid catalyst

Liu

et al. 2021

RSC Adv.

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“…Transparent, thin, and flexible composite films from cellulosic fibers and polymer resins are favorable for optoelectronic applications due to low thermal expansion coefficient, lightweight and high strength . These composites have been prepared using nanocellulose including BC and CNFs, combined with covalent modifications, such as acetylation. ,,,, If such composites can be produced from HF instead of cellulose nanofibers, then the energy-extensive process required by the production of BC and CNFs can be avoided. HF paper contains pores at both macro- and nanoscales, which induce light scattering and result in low transmittance and high haze.…”

Section: Resultsmentioning

confidence: 99%

Tailoring the Holocellulose Fiber/Acrylic Resin Composite Interface with Hydrophobic Carboxymethyl Cellulose to Enhance Optical and Mechanical Properties

Zha,

Yan,

Berglund

et al. 2024

Biomacromolecules

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Interface engineering is essential for cellulosic fiber-reinforced polymer composites to achieve high strength and toughness. In this study, carboxymethyl cellulose (CMC) functionalized with hydrophobic quaternary ammonium ions (QAs) were utilized to modify the interface between holocellulose fibers (HF) and acrylic resin. The wet HF/CMC papers were prepared by vacuum filtration, akin to papermaking, followed by cationic ion exchange with different hydrophobic QAs. Subsequently, the modified papers were dried, impregnated with an acrylic resin monomer, and cured to produce transparent composite films. The effect of the hydrophobic QA moieties on the structure and optical and mechanical properties of the HF/CMC/acrylic resin composites were investigated. The composite film with cetyltrimethylammonium (CTA)-functionalized CMC showed high optical transmittance (87%) with low haze (43%), while the composite film with phenyltrimethylammonium (PTMA)-functionalized CMC demonstrated high Young's modulus of 7.6 GPa and high tensile strength of 180 MPa. These properties are higher than those of the composites prepared through covalent interfacial modification strategies. The results highlighted the crucial role of hydrophobic functionalized CMCs in facilitating homogeneous resin impregnation in the HF fiber network, producing a composite with enhanced interfacial adhesion strength, increased optical transparency, and mechanical strength. This facile use of hydrophobic CMCs as interfacial compatibilizers provides an energy-efficient route for preparing transparent, thin, and flexible composite films favorable in optoelectronic applications.

show abstract

Effect of endoglucanase and high-pressure homogenization post-treatments on mechanically grinded cellulose nanofibrils and their film performance

Cited by 34 publications

References 52 publications

Tailoring Hydrogel Structures: Investigating the Effects of Multistep Cellulose Defibrillation on Polyvinyl Alcohol Composites

Tailoring Hydrogel Structures: Investigating the Effects of Multistep Cellulose Defibrillation on Polyvinyl Alcohol Composites

Production of cellulose nanofibrils and films from elephant grass using deep eutectic solvents and a solid acid catalyst

Tailoring the Holocellulose Fiber/Acrylic Resin Composite Interface with Hydrophobic Carboxymethyl Cellulose to Enhance Optical and Mechanical Properties

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