Mechanical and Thermal Properties of Hydroxypropyl Cellulose/TEMPO-oxidized Cellulose Nanofibril Composite Films

조유정,; 조혜정,; 전상진,; 이선영,

doi:10.5658/wood.2015.43.6.740

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…This might be due to the low concentration of filler and similarity in the chemical structures of both cellulosic derivative and Chi, which were polysaccharidebased materials (El-Ghaffar et al, 2020). A similar finding has been reported by Jo et al (2015) for TEMPO-oxidised cellulose nanofibril-loaded HPC, for which the thermal stability of the film was not related to the loading levels of the nanofiller. The slight weight loss (4.38-6.06%) at temperatures ranging from 35 to 130°C was attributed to the evaporation of physiosorbed water molecules for the biofilms (Fig.…”

Section: Thermal Propertiessupporting

confidence: 73%

“…A similar finding has been reported by Jo et al . (2015) for TEMPO‐oxidised cellulose nanofibril‐loaded HPC, for which the thermal stability of the film was not related to the loading levels of the nanofiller. The slight weight loss (4.38–6.06%) at temperatures ranging from 35 to 130°C was attributed to the evaporation of physiosorbed water molecules for the biofilms (Fig.…”

Section: Resultsmentioning

confidence: 97%

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Functional enhancement of hydroxypropyl cellulose‐based bionanocomposite films incorporating chitosan nanoparticles

Wardana

Wigati

Tanaka

et al. 2022

Int J of Food Sci Tech

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The aims of the present study were to investigate the effect of the incorporation of chitosan nanoparticles (ChiNPs) on the physicochemical properties and antifungal activity of hydroxypropyl cellulose (HPC) bionanocomposite films. The films of 4% HPC and ChiNP at various dosages (0%, 0.1%, 0.5%, 1%, 1.5%, 3% w/w of HPC) were prepared. Atomic force microscopy (AFM) verified the dispersion of sphericalshaped ChiNP in a nanoscale size range (14.75-56.74 nm). Incorporation of nanofiller affected the functional properties by increasing the film-water contact angle to >53°, improving the optical properties, and reducing water vapour permeability by 5.73-12.54%. These results were influenced by surface roughness and microstructure characteristics of a bionanocomposite film, which were confirmed using AFM and scanning electron microscopy (SEM). Tensile assays of the films showed slight increases in tensile strength from 8.87 to 11.08 MPa and Young's modulus from 0.10 to 0.15 GPa with increasing proportions of ChiNP (1.5%). An effective concentration of ChiNP of 1.5% (w/w of HPC) was able to improve the performance of HPC and offered antifungal activity against Botrytis cinerea, as confirmed through mycelial growth inhibition assays and by membrane integrity changes. The HPC/ChiNP bionanocomposite films may have potential applications for active packaging, particularly for fresh fruit commodities.

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Section: Thermal Propertiessupporting

confidence: 73%

Section: Resultsmentioning

confidence: 97%

Functional enhancement of hydroxypropyl cellulose‐based bionanocomposite films incorporating chitosan nanoparticles

Wardana

Wigati

Tanaka

et al. 2022

Int J of Food Sci Tech

View full text Add to dashboard Cite

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Preparation and Characteristics of Cellulose Acetate Based Nanocomposites Reinforced with Cellulose Nanocrystals (CNCs)

Gwon¹,

Lee²,

Cho³

et al. 2018

Journal of the Korean Wood Science and Technology

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⋅Hye-Jung Cho 2 ⋅Sun-Young Lee 2, † ABSTRACT1 )Cellulose acetate (CA) has been widely utilized for composite materials due to its high transparency and thermal resistance. In this study, CNCs (cellulose nanocrystals) were reinforced in CA nanocomposites for fortifying mechanical properties of the composites. In addition, CA nanocomposites reinforced with CNCs were manufactured by extrusion/ injection processes applied with CNC-predispersion method for achieving a high dispersion level of CNCs in the CA matrix. According to the analysis of mechanical properties, the CA nanocomposite with 3 wt% CNCs has the highest tensile and flexural strengths due to the reinforcing effect of CNC nanoparticles. Thermogravimetric analysis (TGA) showed that the addition of acid hydrolyzed CNCs slightly lowered the initial pyrolysis temperature of CA nanocomposite.

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Insect Repellency and Crop Productivity of Essential Oil Films

KIM¹,

KANG²,

Lee³

et al. 2020

Journal of the Korean Wood Science and Technology

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The purpose of this study was to determine the effects of coniferous essential oils (EOs) blended films on insect repellence and crop productivity. Low-density polyethylene (LDPE) film is widely used, especially in agriculture and for food packaging. Ethylene vinyl acetate was blended with LDPE to reduce volatilization of EOs. An EO from Japanese cypress (Chamaecyparis obtusa) was incorporated into the blend film to conduct field research on antimicrobial and insect repellent properties. Among the various concentrations of EO, the highest concentration (2.5%) showed the highest efficiency in terms of pesticidal activity. The ability to inhibit microbial growth can be explained by the lipophilic properties of the EO component, and many studies have already demonstrated this. Agricultural films containing all types of EO have been tested on various crops such as chili, cucumber, Korean melon and have been able to verify their effectiveness in avoiding pests and increasing yields. From these results, it was found that it is reasonable to use a modified film such as a composite film containing an EO for agriculture. Thus, the modified film containing EO has undoubtedly shown impressive potential for reducing the use of pesticides in a variety of ways, not only for agricultural mulching film but also for food and agricultural product packaging. This product is an environmentally friendly chemical and is safe for agricultural and industrial and food packaging applications, among others. In particular, the use of agricultural films significantly reduces the use of pesticides, suggesting that farmers can increase their incomes by reducing working hours and costs, and increasing production.

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Mechanical and Thermal Properties of Hydroxypropyl Cellulose/TEMPO-oxidized Cellulose Nanofibril Composite Films

Cited by 3 publications

References 13 publications

Functional enhancement of hydroxypropyl cellulose‐based bionanocomposite films incorporating chitosan nanoparticles

Functional enhancement of hydroxypropyl cellulose‐based bionanocomposite films incorporating chitosan nanoparticles

Preparation and Characteristics of Cellulose Acetate Based Nanocomposites Reinforced with Cellulose Nanocrystals (CNCs)

Insect Repellency and Crop Productivity of Essential Oil Films

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