Preparation and characterization of highly transparent hydrophobic nanocellulose film using corn husks as main material

Chen, Qifeng; Xiong, Jieyi; Chen, Guangxue; Tan, Taiyan

doi:10.1016/j.ijbiomac.2020.04.250

Cited by 45 publications

(18 citation statements)

References 60 publications

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“…As shown in Fig. 3(a), the characteristic signals of C1s and O1s correspond to 284.80 and 531.21 eV, respectively (Chen et al 2020). In addition, very small characteristic signals of Ti2p correspond to 456.96 eV in TiO2/CNWs (Pisarek et al 2020).…”

Section: Xps Analysismentioning

confidence: 89%

“…The most common inorganic modifier used to improve hydrophobicity of nanocellulose is SiO2. Chen et al (2020) loaded silica onto nanocellulose membranes through surface coating, followed by grafting hexadecyltrimethoxysilane groups (HDTMS). A small amount of SiO2 distributed on the surface of the film gave the coating better hydrophobic property.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of nanocellulose coating modified by titanium dioxide

Zhang

Luo

2021

BioRes

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The hydrophilic character of cellulose nanowhiskers (CNWs) coating was changed by the use of TiO2 to modify CNWs, thus preparing TiO2/CNWs coating by a two-step method. Meanwhile, the effect of the additive amount and particle size of TiO2 on the surface structure and water contact angle (WCA) of the coatings was studied. The solid contents of the suspension were characterized by Fourier infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). The TiO2/CNWs coating was characterized via scanning electron microscopy (SEM) and atomic force microscopy (AFM). Moreover, their wettability by water was revealed by the contact angle analyzer. The AFM and WCA analyses showed different additive amount and particle size of TiO2 have different effects on the surface structure and the WCA of the coatings. When the additive amount of TiO2 was 0.2 wt% and the particle size of TiO2 was 30 nm, the WCA and surface roughness (Rq) of the obtained TiO2/CNWs coating reached maximum values of 86.2° and 135nm, respectively. The TiO2 was relatively evenly distributed in the coating and the addition of TiO2 increased the crystallinity of CNWs from 79.67% to 84.89%. In addition, the FTIR and XPS analyses showed that TiO2 only physically dispersed in CNWs instead of having significant chemical reaction with CNWs.

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Section: Xps Analysismentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of nanocellulose coating modified by titanium dioxide

Zhang

Luo

2021

BioRes

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“…The produced MNPs were cooled at room temperature and collected by magnetic decantation using an external magnet. The MNPs were thoroughly rinsed in ultrapure water before drying in a vacuum oven at 40 • C for 10 h [26]. The mixture of MNPs (0.5 wt%) and NC (0.4 wt%) was magnetically stirred (600 rpm) in 200 mL ultrapure water and ultra-homogenized (2500 rpm) to yield the magnetic nanocellulose (MNC).…”

Section: Preparation Of Magnetic Nanoparticles and Magnetic Nanocellu...mentioning

confidence: 99%

Electrospun Magnetic Nanocellulose–Polyethersulfone-Conjugated Aspergillus oryzae Lipase for Synthesis of Ethyl Valerate

et al. 2021

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A novel greener MNC/PES membrane was developed through an electrospinning technique for lipase immobilization to catalyze the synthesis of ethyl valerate (EV). In this study, the covalent immobilization of Aspergillus oryzae lipase (AOL) onto an electrospun nanofibrous membrane consisting of magnetic nanocellulose (MNC) and polyethersulfone (PES) to produce EV was statistically optimized. Raman spectroscopy, Fourier-transform infrared spectroscopy: attenuated total reflection, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, thermal gravimetric analysis (TGA), and differential thermal gravimetric (DTG) of MNC/PES-AOL demonstrated that AOL was successfully immobilized onto the fibers. The Taguchi design-assisted immobilization of AOL onto MNC/PES fibers identified that 1.10 mg/mL protein loading, 4 mL reaction volume, 250 rpm stirring rate, and 50 °C were optimal to yield 72.09% of EV in 24 h. The thermal stability of MNC/PES-AOL was improved by ≈20% over the free AOL, with reusability for up to five consecutive esterification cycles while demonstrating an exceptional half-life of 120 h. Briefly, the electrospun MNC/PES fibers that immobilized AOL showed promising applicability in yielding relatively good EV levels. This study suggests that using MNC as fillers in a PES to improve AOL activity and durability for a longer catalytic process could be a viable option.

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“…Meanwhile, Chen et al. [ 16 ] isolated CNFs from corn husks using a combination of TEMPO‐mediated oxidation and high‐pressure homogenization, whereas Szymańska‐Chargot et al. [ 17 ] isolated CNFs from apple parenchyma and carrot root using an ultrasonic homogenizer.…”

Section: Introductionmentioning

confidence: 99%

Production of Polyvinyl Alcohol–Alginate–Nanocellulose Fibers

et al. 2022

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In this study, nanocellulose is isolated from oil palm empty fruit bunches using ultrafine grinding and ultrasonication. Here, nanocellulose, a reinforcing agent, is mixed with polyvinyl alcohol and sodium alginate, which act as the matrices. Nanocellulose‐based fibers are produced via the wet spinning method using calcium chloride as a coagulant solvent. The effects of the nanocellulose content on the morphological, mechanical, and in vitro biocompatibility properties of the produced fibers are then examined, with the results demonstrating that the increase in nanocellulose content produces fibers with a rougher cross‐section and higher tensile strength with the addition of nanocellulose up to 3%. Meanwhile, the crystallinity of the fibers increases with the addition of nanocellulose content of up to 5%. The addition of 1% nanocellulose produce fibers with better in vitro biocompatibility, which is confirmed by the higher cell viability and lower inhibition.

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Preparation and characterization of highly transparent hydrophobic nanocellulose film using corn husks as main material

Cited by 45 publications

References 60 publications

Preparation and characterization of nanocellulose coating modified by titanium dioxide

Preparation and characterization of nanocellulose coating modified by titanium dioxide

Electrospun Magnetic Nanocellulose–Polyethersulfone-Conjugated Aspergillus oryzae Lipase for Synthesis of Ethyl Valerate

Production of Polyvinyl Alcohol–Alginate–Nanocellulose Fibers

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