Effects of poly(vinyl alcohol) (PVA) concentration on rheological behavior of TEMPO-mediated oxidized cellulose nanofiber/PVA suspensions

Zhou, Zhijun; Yao, Yongbo; Zhang, Junfeng; Shen, Liangen; Xu, Huawei; Liu, Jie; Shentu, Baoqing

doi:10.1007/s10570-022-04786-1

Cited by 11 publications

(6 citation statements)

References 31 publications

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“…The CNF fabricated via the TEMPO method usually carries carboxyl groups with a negatively charged surface. 30,31 Hence, mutual charge repulsion between Ag NWs/CNF nanocomposites leads to a homogeneous and stable paint system. 29,32 3.2.…”

Section: Resultsmentioning

confidence: 99%

Fabrics Modified with Ag Nanowire/Cellulose Nanofibril Composites for High Conductivity, Electromagnetic Interference Shielding, Ultraviolet Protection, and Thermal Insulation

Wo,

Xie,

Sun

et al. 2024

ACS Appl. Nano Mater.

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The manufacturing of a flexible, durable, large-area, and multifunctional textile material in a straightforward and costeffective manner remains a significant challenge. In this work, we propose a stable Ag nanowire (Ag NW)-containing nanocomposite paint using cellulose nanofibril (CNF) as a dispersant and stabilizer for fabric coating on different substrates, including commercial cotton, polyacrylonitrile, polyphenylene sulfide, polyester, and polyurethane fabrics. Air plasma treatment applied to the fabrics ensured sufficient physical and chemical contact with the paint during the coating process to obtain homogeneous and stable Ag NW-decorated fabrics. The conductive Ag NW networks endowed the fabrics with a low resistivity of 70 mΩ•cm and a high electromagnetic interference (EMI) shielding performance of 58.37 dB in the frequency range of 8.2−12.4 GHz. The modified fabrics also had excellent ultraviolet (UV) protection ability, observable thermal insulation performance, and outstanding underwater durability after multiple washing cycles. The bonding mechanism between the selected fabrics and CNF was also intensively investigated, wherein hydrogen bonding was found to play a significant role. This work provides a universal and scalable method for the design of durable, multifunctional textiles.

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Section: Resultsmentioning

confidence: 99%

Fabrics Modified with Ag Nanowire/Cellulose Nanofibril Composites for High Conductivity, Electromagnetic Interference Shielding, Ultraviolet Protection, and Thermal Insulation

Wo,

Xie,

Sun

et al. 2024

ACS Appl. Nano Mater.

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“…It was found that the shape recovery rate worsened with the increasing PVA addition rate. A possible explanation is that the addition of PVA, a crystalline polymer, increases the crystallinity of the nanofiber mesh, which in turn increases the mechanical strength and decreases flexibility ( Faris et al, 2021 ; Liang et al, 2021 ; Zhou et al, 2022 ). On the basis of those results, this composition (PNIPHM_PVA5) was selected for further study.…”

Section: Resultsmentioning

confidence: 99%

An injectable hyperthermic nanofiber mesh with switchable drug release to stimulate chemotherapy potency

Chen

Fujisawa²,

Takanohashi³

et al. 2022

Front. Bioeng. Biotechnol.

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We developed a smart nanofiber mesh (SNM) with anticancer abilities as well as injectability and fast recovery from irregular to non-compressible shapes. The mesh can be injected at the tumor site to modulate and control anticancer effects by loading the chemotherapeutic drug, paclitaxel (PTX), as well as magnetic nanoparticles (MNPs). The storage modulus of the mesh decreases when applied with a certain shear strain, and the mesh can pass through a 14-gauge needle. Moreover, the fibrous morphology is maintained even after injection. In heat-generation measurements, the mesh achieved an effective temperature of mild hyperthermia (41–43°C) within 5 min of exposure to alternating magnetic field (AMF) irradiation. An electrospinning method was employed to fabricate the mesh using a copolymer of N-isopropylacrylamide (NIPAAm) and N-hydroxyethyl acrylamide (HMAAm), whose phase transition temperature was adjusted to a mildly hyperthermic temperature range. Pplyvinyl alcohol (PVA) was also incorporated to add shear-thinning property to the interactions between polymer chains derived from hydrogen bonding, The “on-off” switchable release of PTX from the mesh was detected by the drug release test. Approximately 73% of loaded PTX was released from the mesh after eight cycles, whereas only a tiny amount of PTX was released during the cooling phase. Furthermore, hyperthermia combined with chemotherapy after exposure to an AMF showed significantly reduced cancer cell survival compared to the control group. Subsequent investigations have proven that a new injectable local hyperthermia chemotherapy platform could be developed for cancer treatment using this SNM.

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“…Treatment • Bio-compatible bio-ink assisted the cell encapsulation at 5 million cells/mL cell density. [139] carried out in the present section makes clear the emerging and cutting-edge applications of NCs as rheology modulators in the coating [117] and paint industries [118] as well as a rheology modulator for cement, [119] composites, [118,[120][121][122] electronic devices, [122][123][124][125] cosmetics, foods, [117,[126][127][128][129][130] drilling fluids, [122,131] and so forth. The superior mechanical, shear thinning, and bio-compatible/non-cytotoxic qualities of NC have also piqued researchers' attention in developing 3D bio-printing materials for creating viable living human organs/tissues.…”

Section: Field Of Application Applicationmentioning

confidence: 91%

“…[ 84,120–149 ] Some of the top‐notch characteristics that specifically define the distinctive rheological features of NC suspensions and their ability to act as rheology modifiers in diverse applications include their large water retention/holding potential, remarkable shear thinning behavior, their capabilities to align at high shear rates, thickening impact, and their capacity to form thixotropic frameworks that excellent restoration phenomena. The literature review carried out in the present section makes clear the emerging and cutting‐edge applications of NCs as rheology modulators in the coating [ 117 ] and paint industries [ 118 ] as well as a rheology modulator for cement, [ 119 ] composites, [ 118,120–122 ] electronic devices, [ 122–125 ] cosmetics, foods, [ 117,126–130 ] drilling fluids, [ 122,131 ] and so forth. The superior mechanical, shear thinning, and bio‐compatible/non‐cytotoxic qualities of NC have also piqued researchers' attention in developing 3D bio‐printing materials for creating viable living human organs/tissues.…”

Section: Advanced Applications Of Nano Cellulose As Rheology Modifiersmentioning

confidence: 99%

Impact of physico‐chemical properties of nanocellulose on rheology of aqueous suspensions and its utility in multiple fields: A review

Rana

Thakur

2023

Vinyl Additive Technology

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Nanocellulose (NC), due to its sustainable nature, high aspect ratio, superior mechanical strength, and availability of functionalizable OH groups, has been widely utilized as reinforcement in numerous fluids/plastics. The physico-chemical properties of NC, like surface characteristics, dimensions/ aspect ratio and their concentration, significantly impact the interparticle interactions, such as the extent of hydrogen bonding, van der Waal forces, hydrophobicity, electrostatic attraction/repulsion, and cellulose entanglement, and have been found to play a critical role in regulating the overall rheological characteristics of fluids. The functionalized NC aqueous suspension exhibited unique shear thinning properties, thixotropic behavior, and quick steady-state viscosity recovery and viscoelastic properties. However, upon adding functionalized NC to other fluids, a different impact was noticed. For instance, it improved the viscosity, G 0 and mechanical stability of bio-ink; the setting time and mechanical strength of cementitious fluids; increased the filtration performance and provided a unique thermo-thickening impact in case of water-based drilling-fluid; enhanced viscosity with time and heat in case of oil recovery, and so forth. Keeping in view the notable dependence of the rheology of fluids on NC additives, in the present review article, the impact of various physico-chemical properties of NC additives on the rheological behavior of NC aqueous suspension and its utility as a rheology modifier in multiple advanced fields has been explored. This review article, compared to previous studies, warrants an update on the impact of recent NC surface functionalization/ blending techniques employed and NC aspect ratio on specific properties of multiple advanced fluids.

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Effects of poly(vinyl alcohol) (PVA) concentration on rheological behavior of TEMPO-mediated oxidized cellulose nanofiber/PVA suspensions

Cited by 11 publications

References 31 publications

Fabrics Modified with Ag Nanowire/Cellulose Nanofibril Composites for High Conductivity, Electromagnetic Interference Shielding, Ultraviolet Protection, and Thermal Insulation

Fabrics Modified with Ag Nanowire/Cellulose Nanofibril Composites for High Conductivity, Electromagnetic Interference Shielding, Ultraviolet Protection, and Thermal Insulation

An injectable hyperthermic nanofiber mesh with switchable drug release to stimulate chemotherapy potency

Impact of physico‐chemical properties of nanocellulose on rheology of aqueous suspensions and its utility in multiple fields: A review

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