Production of fine powder from silk by radiation

Takeshita, Hidefumi; Ishida, Kazushige; Kamiishi, Youichi; Yoshii, Fumio; Kume, Teruyoshi

doi:10.1002/1439-2054(20001101)283:1<126::aid-mame126>3.3.co;2-r

Cited by 10 publications

(16 citation statements)

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“…1,2 So that its properties are retained, silk is widely produced in a powder form by different methods. [2][3][4][5][6] Silk fibroin powder has already found utility in cosmetic materials and functional foods. Powdered silk fibroin is considered effective as an additive for cosmetic and pharmaceutical preparations because of its moderate moisture absorption and retention properties and its high affinity for human skin; actually, down powder also preserves these virtues.…”

Section: Introductionmentioning

confidence: 99%

“…5 High-energy irradiation has also been used to destroy the crystals. 4 After the pretreatment, silk fibroin fibers are dissolved in an aqueous calcium chloride solution at a high temperature, and this is followed by a dialysis treatment to remove the salt; they are then dehydrated, dried, and pulverized to yield a fine fibroin powder. [6][7][8] Recently, simpler methods, which do not include dissolution and dialysis processes for silk fibroin, have been proposed.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of superfine down powder

Wang

Cui

et al. 2008

J of Applied Polymer Sci

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Superfine down powder was produced from down fiber after it was cut into short pieces and ground on a purpose-built machine. Scanning electron microscopy photographs showed that the down fiber was ground into particles with some fiber fragments and a large amount of rod-shaped ultrafine powder. Particle size distribution analysis indicated that the average size of the down powder was 1.546 lm. Fourier transform infrared analysis showed that the absorbing peaks around 1640, 1520, and 1230 cm À1 were sharper than those of the down fiber. X-ray diffraction analysis revealed that the crystallinity of the superfine down powder was a little lower than that of the down fiber. Thermogravimetric analysis showed that the thermal stability decreased when the down fiber was ground into powder. Differential scanning calorimetry analysis showed that the intensity of the heatabsorbing peaks of the down powder was lower than that of the down fiber, so the down powder decomposed more readily than the down fiber.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of superfine down powder

Wang

Cui

et al. 2008

J of Applied Polymer Sci

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show abstract

“…Silk fibroin (SF) can be prepared in various forms such as gels, powders, fibers, and membranes [2][3][4][5][6][7][8]. Several applications for SF in the areas of biomedical science and engineering have recently been identified due to its distinctive biological properties including biocompatibility, oxygen and water vapor permeability, biodegradability, and minimal in vitro and in vivo inflammatory responses [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Time-resolved structural investigation of regenerated silk fibroin nanofibers treated with solvent vapor

Jeong

Lee

Liu

et al. 2006

International Journal of Biological Macromolecules

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“…Depending on its application, SF can also be found in various forms, such as gels, powders, fibers, or membranes [2][3][4][5]. Recently, researchers have investigated the potential of SF as a candidate material with biomedical applications, because of its distinctive biological properties that include good biocompatibility, good oxygen and water vapor permeability, biodegradability, and minimal inflammatory reaction [6][7][8].…”

Section: Introductionmentioning

confidence: 99%