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Nagasawa, Naotsugu; Kanazawa, Shinichi*; Tamada, Masao
Baiopurasuchikku No Kokinoka, Saishigenka Gijutsu, p.162 - 169, 2008/04
no abstracts in English
Nagasawa, Naotsugu; Tamada, Masao; Kanazawa, Shinichi*; Hayasaki, Toshikatsu*
Purasuchikkusu, 58(11), p.45 - 48, 2007/11
Poly(lactic acid), PLA was irradiated using electron beams in the presence of triallyl isocyanurate at 5 phr concentration as crosslinking agent. The crosslinked PLA, of which heat resistance was improved, is applied on flexible and elastic materials by addition of plasticizer or immersion in plasticizer. The elastic PLA material has several advantages such as high holding plasticizer, heat resistance at 80 
C and transparency. It is therefore proven that crosslinking technology is beneficial to expanding application of soften PLA.
Nagasawa, Naotsugu; Kaneda, Ayako*; Matsuzaki, Tomoaki*; Kanazawa, Shinichi*; Yagi, Toshiaki; Tran, M. Q.*; Mitomo, Hiroshi*; Yoshii, Fumio; Tamada, Masao; Quynh, T. M.*
JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 53, 2007/02
Poly(L-lactic acid), PLA was irradiated using electron beams (EB) in the presence of polyfunctional monomers (PFM) as crosslinking agent. Among the PFMs, triallyl isocyanurate (TAIC) at 3% concentration was found to be the most effective for crosslinking of PLA by irradiation technique. The crosslinked PLA obtained has heat resistance higher than 200C. From this fact, the crosslinked PLA is applied on heat-shrinkable tube, cup and plate. The shrinkable tube has several advantages such as high heat resistance and transparency. It is therefore proven that crosslinking technology is beneficial to expanding the application of PLA.
Nagasawa, Naotsugu
Nihon Setchaku Gakkai-Shi, 41(10), p.420 - 426, 2005/10
no abstracts in English
Yagi, Toshiaki
Dai-14-Kai Hoshasen Riyo Gijutsu Semina; Hirogaru Hoshasen No Sangyo Riyo Koen Tekisuto, p.67 - 72, 2004/10
no abstracts in English
Nagasawa, Naotsugu; Yagi, Toshiaki
Science & Technology Journal, 13(10), p.20 - 21, 2004/10
no abstracts in English
Nagasawa, Naotsugu; Yagi, Toshiaki; Kanazawa, Shinichi*; Quynh, T. M.*; Mitomo, Hiroshi*; Yoshii, Fumio; Tamada, Masao
no journal, ,
no abstracts in English
Kanazawa, Shinichi*; Nagasawa, Naotsugu; Yagi, Toshiaki*; Tamada, Masao
no journal, ,
Biologically originated polymer, polylactic acid, became commercially practical in a limited area owing to its low impact resistance. Elastic sheet of polylactic acid was obtained by dipping the radiation crosslinked polylactic acid into plasticizer heated up to 120C. Without crosslinking, the polylactic acid cannot soak plasticizer since it was crystallized in the hot plasticizer.
Nagasawa, Naotsugu
no journal, ,
no abstracts in English
Kanazawa, Shinichi*; Nagasawa, Naotsugu; Tamada, Masao
no journal, ,
no abstracts in English
