New films produced from microfibrillated natural fibres

Taniguchi, Takashi; Okamura, Keizo

doi:10.1002/(sici)1097-0126(199811)47:3<291::aid-pi11>3.0.co;2-1

Cited by 304 publications

(141 citation statements)

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“…The commonly used equipment is Supermasscolloider grinder (see Figure 9). Taniguchi and Okamura used Masuko's colloider grinder for the first time to grind 5-10 wt.% cellulose materials for 10 times and successfully prepared CNFs with diameter of 20-90 nm [164]. Since then, this method has attracted wide attention [165][166][167][168][169][170].…”

Section: Grinding Methodmentioning

confidence: 99%

Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials

Xie

Yang

2018

International Journal of Polymer Science

209

128

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The recent strategies in preparation of cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) were described. CNCs and CNFs are two types of nanocelluloses (NCs), and they possess various superior properties, such as large specific surface area, high tensile strength and stiffness, low density, and low thermal expansion coefficient. Due to various applications in biomedical engineering, food, sensor, packaging, and so on, there are many studies conducted on CNCs and CNFs. In this review, various methods of preparation of CNCs and CNFs are summarized, including mechanical, chemical, and biological methods. The methods of pretreatment of cellulose are described in view of the benefits to fibrillation.

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Section: Grinding Methodmentioning

confidence: 99%

Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials

Xie

Yang

2018

International Journal of Polymer Science

209

128

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“…Microfibrillar cellulose (MFC) can be obtained by treating pulp fibers mechanically in, for example, a high pressure homogenizer (Herrick et al 1983;Turbak et al 1983;Nakagaito and Yano 2004;Zimmermann et al 2004;Pääkkö et al 2007), a ceramic grinder (Taniguchi and Okamura 1998), or a high-speed dispersing unit (Brodin and Theliander 2012). The sizes and yield of microfibrils/nanofibrils depend upon the treatments used, as well as on the raw material.…”

Section: Absorbent Foam Softwood Kraft Pulpmentioning

confidence: 99%

Preparation of Absorbent Foam Based on Softwood Kraft Pulp: Advancing from Gram to Kilogram Scale

Brodin¹,

Sonavane²,

Theliander³

2013

BioResources

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Absorbent foams were produced at both the gram scale and the kilogram scale by treating bleached softwood kraft pulp fibers to TEMPO oxidation, followed by washing, fiber disintegration, and freeze drying. Two reaction temperatures and three different dosages of primary oxidant were evaluated to find suitable oxidation conditions. It was found that the absorption and retention capacities were 50 to 70% lower for kilogram-scale foams than for gram-scale foams. SEM studies showed that the kilogram-scale foams had larger pores than the gram-scale foams; this explains the major differences in absorption and retention. The oxidation treatments performed in both scales resulted in a major increase in the amount of carboxylate groups and a major decrease in DP V , but only minor differences in these factors were found in a comparison between pulps from gram-and kilogram-scale experiments. However, the kilogram-scale dispersing equipment appeared to cause more fiber cutting, while the equipment used in the gram-scale experiments promoted the liberation of microfibrils to a greater extent. Furthermore, in both the gram-and kilogram-scale samples, a high dosage of primary oxidant and a low oxidation temperature were found to maximize the retention of liquid.

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“…The most frequently used method is solvent evaporation casting, including water soluble and other solvent soluble. Nanocomposite materisls can be made by solvent casting method in Teflon or propylene dishes (Favier et al, 1995;Taniguchi and Okamura, 1998). Hot-pressing method after freeze-drying of fibrils can also be used www.intechopen.com Advanced Cellulosic Nanocomposite Materials 553 (Dufresne et al, 1997a).…”

Section: Fabrication and Characterization Of Cellulosic Nanocompositesmentioning

confidence: 99%

“…Various analysis instruments can be used to investigate the characterization of the obtained composites, including mechanical properties, morphological characteristics, and thermal properties. Tensile and bending tests are normally used to measure the mechanical properties (Bhatnagar and Sain, 2005;Cheng et al, 2007aCheng et al, , 2009bChoi and Simonsen, 2006;Taniguchi and Okamura, 1998;Zimmermann et al, 2005;Nakagaito and Yano, 2005). Additionally, dynamic mechnical analysis (DMA) tests can also be used used to evaluate composite performance under various conditions of temperature and relative humidity (Choi and Simonsen, 2006;Favier et al, 1995).…”

Section: Fabrication and Characterization Of Cellulosic Nanocompositesmentioning

confidence: 99%

“…Additionally, dynamic mechnical analysis (DMA) tests can also be used used to evaluate composite performance under various conditions of temperature and relative humidity (Choi and Simonsen, 2006;Favier et al, 1995). For morphological characterizations of nanocomposite, AFM, SEM, and TEM are common tools (Cheng et al 2009a;Kvien et al, 2005;Pu et al, 2007;Taniguchi and Okamura, 1998;Zimmermann et al, 2004;Zimmermann et al, 2005). These techniques are helpful to investigate the homogeneity of the composite, presence of voids, dispersion level of the fibrils within the continuous matrix, presence of aggregates, sedimentation, the interface between the fibril and the polymer matrix, and possible orientation of the fibrils.…”

Section: Fabrication and Characterization Of Cellulosic Nanocompositesmentioning

confidence: 99%

See 1 more Smart Citation

Advanced Cellulosic Nanocomposite Materials

Cheng¹,

DeVallance²,

Wang³

et al. 2011

Advances in Composite Materials for Medicine and Nanotechnology

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New films produced from microfibrillated natural fibres

Cited by 304 publications

References 0 publications

Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials

Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials

Preparation of Absorbent Foam Based on Softwood Kraft Pulp: Advancing from Gram to Kilogram Scale

Advanced Cellulosic Nanocomposite Materials

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