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Watanabe, So; Sano, Yuichi; Kofuji, Hirohide; Takeuchi, Masayuki; Koizumi, Tsutomu
NEA/NSC/R(2015)2 (Internet), p.338 - 344, 2015/06
Nagasawa, Naotsugu; Yagi, Toshiaki; Kume, Tamikazu; Yoshii, Fumio
Carbohydrate Polymers, 58(2), p.109 - 113, 2004/11
Times Cited Count：116 Percentile：96.14(Chemistry, Applied)A new biodegradable starch derivative hydrogel, carboxymethyl starch (CMS) hydrogel, was synthesized by irradiation in high concentrated solution (in the so-called paste-like condition). The effect of the solution concentration on the crosslinking of CMS, the properties of formed hydrogel and the biodegradability were investigated. The crosslinking of CMS was induced by irradiation at concentration range from 20 to 50 %. 1 g of the dry gel formed from the solution at concentration of 40 % crosslinked at dose of 2 kGy was able to absorb about 500 and 26 g of distilled water and 0.9 % NaCl, respectively. Biodegradation of crosslinked CMS (irradiated in 50 % solution at a dose of 5 kGy) by controlled composting was about 40 % after 2 weeks which was faster than standard cellulose powder. The contribution of crosslinking in CMS was elucidated from crosslinking behaviors of carboxymethyl amylopectin (CMAP) and carboxymethyl amylose (CMA). The crosslinked CMAP (irradiated at a concentration range from 10 to 50 %) reveal higher gel fraction and water-uptake than that of CMA. The amylopectin region in CMS is predominantly responsible for crosslinking of CMS.
Hoshiya, Taiji*; Takaya, Shigeru*; Ueno, Fumiyoshi; Nemoto, Yoshiyuki; Nagae, Yuji*; Miwa, Yukio; Abe, Yasuhiro*; Omi, Masao; Tsukada, Takashi; Aoto, Kazumi*
Transactions of the Materials Research Society of Japan, 29(4), p.1687 - 1690, 2004/06
JAERI and JNC have begun the cooperative research of evaluation techniques of structural material degradation in FBR and LWR, which based on magnetic and corrosion properties along grain boundaries. Magnetic method has been proposed as the one of the non-destructive detection techniques on the early stage of creep-damage before crack initiation for aged structural materials of FBRs. The effects of applied stress on natural magnetization were investigated on paramagnetic stainless steels having creep-damages. On the other hand, corrosion properties and magneto-optical characteristics of ion-irradiated stainless steels in the vicinity of grain boundaries were estimated by AFM and Kerr effect microscope, respectively. These degradations were induced by changes in characteristics in the vicinity of grain boundaries. It is found that the initial level of progressing process of damage can detect changes in magnetic and corrosion properties along grain boundaries of aged and degraded nuclear plants structural materials.
*; *; *; Seguchi, Tadao; Yagi, Toshiaki
Proc. of 46th Int. Wire and Cable Symp., p.1 - 5, 1997/00
no abstracts in English
Kudo, Hisaaki; Sasuga, Tsuneo; Seguchi, Tadao
JAERI-Review 95-019, 0, p.77 - 79, 1995/10
no abstracts in English
*; Seguchi, Tadao
Radiation Processing of Polymers, p.221 - 254, 1992/00
no abstracts in English
*; Seguchi, Tadao; Nishii, Masanobu; *; Watanabe, Tadashi*
JAERI-M 90-011, 59 Pages, 1990/02
no abstracts in English
Sonoda, Katsumi*; Yamamoto, Yasushi*; Hashimoto, Osamu*; Ono, Toshio*; Tomita, Haruhiko*; Udagawa, Akira; Egusa, Shigenori; Sasuga, Tsuneo; Seguchi, Tadao; Tamura, Naoyuki
Japanese Journal of Applied Physics, Part 1, 28(10), p.1950 - 1956, 1989/10
Times Cited Count：0 Percentile：0.01(Physics, Applied)no abstracts in English
Seguchi, Tadao
Proc.Int.Topical Meeting on Operability of Nuclear Power Systems in Normal and Adverse Environments, p.509 - 515, 1988/00
no abstracts in English
-ray irradiated polymer insulation materialsSeguchi, Tadao; *
JAERI 1299, 64 Pages, 1986/03
no abstracts in English
Seguchi, Tadao; *; *
Hitachi Cable Rev., (4), p.37 - 42, 1985/00
no abstracts in English
Sasuga, Tsuneo; Hayakawa, Naohiro; Yoshida, Kenzo; Hagiwara, Miyuki
Polymer, 26, p.1039 - 1045, 1985/00
Times Cited Count：85 Percentile：95.03(Polymer Science)no abstracts in English
; Kawanishi, Shuichi; Hagiwara, Miyuki
EIM-84-130, p.19 - 25, 1984/00
no abstracts in English
; M.A.Kirk*; R.C.Birtcher*; Hagiwara, Miyuki; Kawanishi, Shuichi
Nuclear Instruments and Methods in Physics Research B, B1, p.610 - 616, 1984/00
no abstracts in English
-Ray Irradiated Elostomers by Water Sorption in Boiling Spray Solution; ; ; ; ; Yoshida, Kenzo
JAERI-M 83-072, 35 Pages, 1983/05
no abstracts in English
Seguchi, Tadao; Arakawa, Kazuo; ; Hayakawa, Naohiro; Machi, Sueo
Radiation Physics and Chemistry, 21(6), p.495 - 501, 1983/00
no abstracts in English
Seguchi, Tadao; Yoshida, Kenzo
EIM-82-113, p.49 - 58, 1982/00
no abstracts in English
Seguchi, Tadao; Arakawa, Kazuo; Hayakawa, Naohiro; ; Kuriyama, Isamu
Radiation Physics and Chemistry, 19(4), p.321 - 327, 1982/00
no abstracts in English
Seguchi, Tadao; Arakawa, Kazuo
EIM-81-91, p.11 - 20, 1981/00
no abstracts in English
E.A.Hegazy*; Seguchi, Tadao; Arakawa, Kazuo; Machi, Sueo
J.Appl.Polym.Sci., 26, p.1361 - 1372, 1981/00
Times Cited Count：63 Percentile：93.44(Polymer Science)no abstracts in English
