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Naotsugu Nagasawa
Takasaki Radiation Chemistry Research Establishment - JAERI Watanuki, Takasaki, Gunma, 370-1292 Japan
Materials Science & Nanotechnology

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DEGRADATION OFSODIUMALGINATE BYLOWENERGYELECTRON BEAM Tita Puspitasari; Naotsugu Nagasawa; Toshiaki Yagi; Fumio Yoshii
Jurnal Sains Materi Indonesia EDISI KHUSUS: OKTOBER 2006
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (249.137 KB) | DOI: 10.17146/jusami.2006.0.0.5062

Abstract

DEGRADATION OFSODIUMALGINATE BYLOWENERGYELECTRON BEAM. High viscosity (HV) and low viscosity (LV) alginate prepared in 5% solutions were irradiated by low energy electron beam (LEEB) at 55oC and ambient temperature respectively. Oligoalginates with molecular weight lower than 20,000 Da and broad molecular weight distribution were obtained until 60 minutes of irradiation. The decrease in molecular weight was accompanied by appearance of UV absorbance peak at 265 nm. LV alginate was preferable to use as raw material for LEEB irradiation process than HV alginate.
Co-Authors Fumio Yoshii Tita Puspitasari Toshiaki Yagi