Mechanical properties of silk fibroin–microcrystalline cellulose composite films

Noishiki, Yasutomo; Nishiyama, Yoshiharu; Wada, Masahisa; Kuga, Shigenori; Magoshi, Jun

doi:10.1002/app.11370

Cited by 150 publications

(98 citation statements)

References 20 publications

(1 reference statement)

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“…From the observed shift in the infrared absorption bands of amide I and amide II of fibroin, the anomaly in the mechanical strength is considered to arise from the contact of fibroin with the highly ordered surface of cellulose whiskers. This phenomenon is not practicable for producing bulk materials because of the lengthy procedure of solubilization and dialysis involved, but may be useful in biomedical applications such as for cell culture media and implant materials, since both components are chemically inert and known to be compatible with living tissues [158]. Hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 )-bacterial cellulose as a novel class of nanocomposites were prepared by Wan et al [159,160] Figure 11b, esterification takes place during phosphorylation and thus anionic phosphate groups are bonded to the cellulose chain through strong covalent bonds.…”

Section: In Biomedicalmentioning

confidence: 99%

Nanotechnology and its applications in lignocellulosic composites, a mini review

Kamel¹

2007

Express Polym. Lett.

238

109

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Abstract. Nanotechnology has applications across most economic sectors and allows the development of new enabling science. The ability to see materials down to nanoscale dimensions and to control how materials are constructed at the nanoscale is providing the opportunity to develop new materials and products in previously unimagined ways. This review covers the academic and industrial aspects of the preparation, characterization, material properties, crystallization behavior; melt rheology, and processing of polymer/cellulose or cellulose/cellulose nanocomposites. Cellulosic materials have a great potential as nanomaterials because they are abundant, renewable, have a nanofibrillar structure, can be made multifunctional, and self-assemble into well-defined architectures. The fibrillation of pulp fiber to obtain nano-orderunit web-like network structure, called microfibrillated cellulose, is obtained through a mechanical treatment of pulp fibers, consisting of refining and high pressure homogenizing processes. Also, nano-whisker can be used as novel reinforcement in nanocomposites; it can be obtained by acid hydrolysis from various sources such as wood, tunicin, ramie, cotton, wheat straw, bacterial cellulose, and sugar beet. The properties of nanocomposite materials depend not only on the properties of their individual parents, but also on their morphology and interfacial characteristics. Compared with plant cellulose, bacterial cellulose has found many applications in the biomedical field as tissue engineering materials due to their good biocompatibility, mechanical properties similar to those of hard and soft tissue and easy fabrication into a variety of shapes with adjustable interconnected porosity. One of the drawbacks of cellulose whiskers with polar surfaces is poor dispersibility/compatibility with nonpolar solvents or resins. Thus, their incorporation as reinforcing materials for nanocomposites has so far been largely limited to aqueous or polar systems. To overcome this problem and broaden the type of possible polymer matrices, efforts of surface modification have been made. These attempts include surfactant coating or graft copolymerization.

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Section: In Biomedicalmentioning

confidence: 99%

Nanotechnology and its applications in lignocellulosic composites, a mini review

Kamel¹

2007

Express Polym. Lett.

238

109

View full text Add to dashboard Cite

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“…Both natural and synthetic polymers were explored as the matrixes. Natural polymers such as poly(β-hydroxyoctanoate) (PHO) [19], soy protein [20], silk fibroin [21] reinforced with cellulose whiskers were reported. Meanwhile, Poly-(styrene-co-butyl acrylate) (poly(S-co-BuA)) [22], poly(vinyl chloride) (PVC) [23], polypropylene [24], waterborne polyurethane [25], were also used as synthetic matrixes.…”

Section: Introductionmentioning

confidence: 99%

Starch-based nanocomposites reinforced with flax cellulose nanocrystals

Cao¹,

Chen²,

Chang³

et al. 2008

Express Polym. Lett.

238

110

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Abstract. In this study, the cellulose crystals, prepared by acid hydrolysis of flax fiber, consisted of slender rods with lengths ranging from 100 to 500 nm and diameters ranging from 10 to 30 nm, respectively. After mixing the suspension of flax cellulose nanocrystals (FCNs) and plasticized starch (PS), the nanocomposite films were obtained by the casting method. The effects of FCNs loading on the morphology, thermal behaviour, mechanical properties and water sensitivity of the films were investigated by means of wide-angle X-ray diffraction, differential scanning calorimetry, tensile testing, and water absorption testing. Scanning electron microscopy photographs of the failure surfaces clearly demonstrated a homogeneous dispersion of FCNs within the PS matrix and strong interfacial adherence between matrix and fillers, which led to an increase of glass transition temperature ascribed to the starch molecular chains in the starch-rich phase. In particular, these nanocomposite films exhibited a significant increase in tensile strength and Young's modulus from 3.9 to 11.9 MPa and from 31.9 to 498.2 MPa, respectively, with increasing FCNs content from 0 to 30 wt%. Also, with a loading of FCNs, the resulting nanocomposite films showed a higher water resistance. Therefore, FCNs played an important role in improving the mechanical properties and water resistance of the starch-based materials.

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“…Various natural polymers, such as, chitosan, gelatin, silk collagen, and other synthetic materials have been used in different combinations with CNCs to develop effective scaffolds with improved physical and biological functions. Blending CNCs and silk fibroin composite films resulted in interesting and novel materials (Noishiki et al, 2002). Silk fibroin-microcrystalline cellulose composite films showed increases in tensile strength and ultimate strain, by up to five folds, when compared to those of native fibroin or cellulose films.…”

Section: Tissue Engineering: "Green" Tissue Scaffoldsmentioning

confidence: 99%

Cellulose Nanocrystals as Advanced "Green" Materials for Biological and Biomedical Engineering

Sinha¹,

Martin²,

Lim³

et al. 2015

Journal of Biosystems Engineering

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Background: Cellulose is a ubiquitous, renewable and environmentally friendly biopolymer, which has high promise to fulfil the rising demand for sustainable and biocompatible materials. Particularly, the recent progress in the synthesis of highly crystalline cellulose-based nanoscale biomaterials, namely cellulose nanocrystals (CNCs), draws significant attention from many research communities, ranging from bioresource engineering, to materials science and engineering, to biological and biomedical engineering to bionanotechnology. The feasibility of harnessing CNCs' unique biophysicochemical properties has inspired their basic and applied research, offering much promise for new biomaterials with diverse advanced functionalities. Purpose: This review focuses on vital issues and topics on the recent advances in CNC-based biomaterials with potential, in particular, for bionanotechnology and biological and biomedical engineering. The challenges and limitations of CNC technology are discussed as well as potential strategies to overcome them, providing an essential source of information in the exploration of possible and futuristic applications of the CNC-based functional "green" nanomaterials. Conclusion: CNCs offer exciting possibilities for advanced "green" nanomaterials, driving innovative research and development in a wide range of fields, including biological and biomedical engineering.

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Mechanical properties of silk fibroin–microcrystalline cellulose composite films

Cited by 150 publications

References 20 publications

Nanotechnology and its applications in lignocellulosic composites, a mini review

Nanotechnology and its applications in lignocellulosic composites, a mini review

Starch-based nanocomposites reinforced with flax cellulose nanocrystals

Cellulose Nanocrystals as Advanced "Green" Materials for Biological and Biomedical Engineering

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