Preparation of Cellulose Nanofibrils and Their Applications: High Strength Nanopapers and Polymer Composite Films

이선영,; 전상진,; 도금현,; 이수,; 김병훈,; 민경선,; 김승찬,; 허윤식,

doi:10.5658/wood.2011.39.3.197

Cited by 9 publications

(3 citation statements)

References 9 publications

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“…In the field of wood engineering, the research on film mainly involves the effect of the addition amount of nanocellulose and the effect of starch on strength and thermal properties (Lee et al, 2014). There have been studies on the adhesive performance of plywood according to the lamination method of film (Kang et al, 2017), printability of coated paper (Lee, 1994), mechanical and thermal properties of composite film using cellulose nanofibers (Lee et al, 2015), and highstrength nanopaper and polymer composite film (Lee et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

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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“…Cellulose nanofibrils (CNFs) are fibrous structures with a diameter of 100 nm or less that can be obtained from lignocellulose via a combination chemical pretreatment and mechanical treatment (Jang et al, 2014(Jang et al, , 2017Lee et al, 2011;Park et al, 2015). CNFs can be classified into three types depending on the chemical composition: Lignocellulose nanofibrils (LCNFs) containing cellulose, hemicellulose, and lignin; holocellulose nanofibrils (HCNFs) containing cellulose and hemicellulose; and pure cellulose nanofibrils (PCNFs) containing only cellulose (Han et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Cellulose Nanofibrils from Lignocellulose Using a Deep Eutectic Solvent Followed by Enzymatic Treatment

LEE¹,

Han²,

Kwon³

et al. 2022

J. Korean Wood Sci. Technol.

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Lignocellulose nanofibrils (LCNFs) were prepared using a two-step deep eutectic solvent (DES) and enzymatic pretreatment followed by mechanical defibrillation, and we examined the effects of enzymatic pretreatment conditions on different characteristics of the LCNFs thus obtained. The LCNFs yielded using the two-step DES pretreatment (Enz-LCNF) exhibited a well-defibrillated entangled web-like structure with an average fiber diameter ranging from 15.7 to 20.4 nm. Furthermore, we found that the average diameter and filtration time of the Enz-LCNFs decreased with an increase in enzyme concentration and enzymatic treatment time, whereas we detected a concomitant reduction in the tensile strength of the Enz-LCNF sheets. The Enz-LCNFs were characterized by a typical cellulose Ⅰ structure, thereby indicating that the enzymatic treatment causes very little damage to the crystalline form.

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“…Loess powder (red clay, 1 g) was added to 200 mL of water and homogenized with a high-pressure homogenizer (M-110EH, Microfluidizer® Processors, Westwood, MA, USA). The loess emulsion was passed at a rate of 100 mL/min through two nozzle sizes (200 µm and 87 µm) under a pressure of 1000 bar as described in literature (Lee et al 2011). Different repetitions (2, 4, 6, 8, and 10 times) of homogenization were conducted for the loess emulsion preparations.…”

Section: Homogenization Of Loessmentioning

confidence: 99%

Effect of Loess Treatment and Carbonization on the Hygric Performance of Medium-density Fiberboard

Lee¹,

Jang²,

Lee³

et al. 2017

BioResources

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The level of relative humidity is one of the key parameters in evaluating indoor air quality and comfort. In principle, humidity can be kept more uniform over time by use of materials that adsorb moisture from the air reversibly. This study was conducted to investigate the effect of loess treatment and carbonization on the hygric performance of mediumdensity fiberboard (MDF). The loess treatment was conducted with different sizes of loess particle prepared by a high-pressure homogenizer. After loess treatment on the surface of the MDF, it was carbonized at high temperature (600 °C). Loess is an abundant mineral high in Si content, which has high moisture absorption capacity, which remained after the carbonization process. The study also found that the loess treatment positively affected the hygric performance of carbonized MDF (c-MDF). The hygric performance of c-MDF almost doubled after the loess treatment compared with the non-treated c-MDF. However, the nano conversion of loess did not influence the hygric performance. Loess-treated carbonized MDF could be used as a humidity controller in buildings.

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Preparation of Cellulose Nanofibrils and Their Applications: High Strength Nanopapers and Polymer Composite Films

Cited by 9 publications

References 9 publications

Insect Repellency and Crop Productivity of Essential Oil Films

Insect Repellency and Crop Productivity of Essential Oil Films

Preparation and Characterization of Cellulose Nanofibrils from Lignocellulose Using a Deep Eutectic Solvent Followed by Enzymatic Treatment

Effect of Loess Treatment and Carbonization on the Hygric Performance of Medium-density Fiberboard

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