Abstract
Silk fine power was prepared directly from silk fiber irradiated with an accelerated electron beam(EB). Irradiated silk fiber was well pulverized only by physical crushing using ball mill without any chemical pretreatment. Raw and degummed silk fibers were irradiated at ambient temperature in the dose range of 250-1000 kGy. Although unirradiated silk fibers were not pulverized at all, irradiated fibers were easily pulverized and showed higher conversion from fiber to powder for higher doses. The presence of oxygen in the irradiation atmosphere enhanced pulverization of silk fiber. Raw silk fibers were less pulverized compared to degummed ones. The electron microscope observation showed that the minimum particle size of silk powder obtained from fiber irradiated by 1000 kGy in oxygen was less than 10 microns. It was found that fibroin powder obtained in this work dissolved remarkably into cold water, thought unirradiated fibroin fiber had little solubility even in hot water. A typical soluble fraction was about 60% for fibroin powder obtained from fiber irradiated by 1000 kGy in oxygen. (author)
Takeshita, Hidefumi;
Yoshii, Fumio;
Kume, Tamikazu;
[1]
Ishida, Kazunari;
Kamiishi, Youichi
[2]
- Japan Atomic Energy Research Inst., Takasaki, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment
- Textile Research Institute of Gunma, Kiryu, Gunma (Japan)
Citation Formats
Takeshita, Hidefumi, Yoshii, Fumio, Kume, Tamikazu, Ishida, Kazunari, and Kamiishi, Youichi.
Production of fine powder from silk by radiation.
Japan: N. p.,
2000.
Web.
Takeshita, Hidefumi, Yoshii, Fumio, Kume, Tamikazu, Ishida, Kazunari, & Kamiishi, Youichi.
Production of fine powder from silk by radiation.
Japan.
Takeshita, Hidefumi, Yoshii, Fumio, Kume, Tamikazu, Ishida, Kazunari, and Kamiishi, Youichi.
2000.
"Production of fine powder from silk by radiation."
Japan.
@misc{etde_20128298,
title = {Production of fine powder from silk by radiation}
author = {Takeshita, Hidefumi, Yoshii, Fumio, Kume, Tamikazu, Ishida, Kazunari, and Kamiishi, Youichi}
abstractNote = {Silk fine power was prepared directly from silk fiber irradiated with an accelerated electron beam(EB). Irradiated silk fiber was well pulverized only by physical crushing using ball mill without any chemical pretreatment. Raw and degummed silk fibers were irradiated at ambient temperature in the dose range of 250-1000 kGy. Although unirradiated silk fibers were not pulverized at all, irradiated fibers were easily pulverized and showed higher conversion from fiber to powder for higher doses. The presence of oxygen in the irradiation atmosphere enhanced pulverization of silk fiber. Raw silk fibers were less pulverized compared to degummed ones. The electron microscope observation showed that the minimum particle size of silk powder obtained from fiber irradiated by 1000 kGy in oxygen was less than 10 microns. It was found that fibroin powder obtained in this work dissolved remarkably into cold water, thought unirradiated fibroin fiber had little solubility even in hot water. A typical soluble fraction was about 60% for fibroin powder obtained from fiber irradiated by 1000 kGy in oxygen. (author)}
place = {Japan}
year = {2000}
month = {Mar}
}
title = {Production of fine powder from silk by radiation}
author = {Takeshita, Hidefumi, Yoshii, Fumio, Kume, Tamikazu, Ishida, Kazunari, and Kamiishi, Youichi}
abstractNote = {Silk fine power was prepared directly from silk fiber irradiated with an accelerated electron beam(EB). Irradiated silk fiber was well pulverized only by physical crushing using ball mill without any chemical pretreatment. Raw and degummed silk fibers were irradiated at ambient temperature in the dose range of 250-1000 kGy. Although unirradiated silk fibers were not pulverized at all, irradiated fibers were easily pulverized and showed higher conversion from fiber to powder for higher doses. The presence of oxygen in the irradiation atmosphere enhanced pulverization of silk fiber. Raw silk fibers were less pulverized compared to degummed ones. The electron microscope observation showed that the minimum particle size of silk powder obtained from fiber irradiated by 1000 kGy in oxygen was less than 10 microns. It was found that fibroin powder obtained in this work dissolved remarkably into cold water, thought unirradiated fibroin fiber had little solubility even in hot water. A typical soluble fraction was about 60% for fibroin powder obtained from fiber irradiated by 1000 kGy in oxygen. (author)}
place = {Japan}
year = {2000}
month = {Mar}
}