Radiation crosslinking of Bionolle and its biodegradation

Biodegradable aliphatic polymer such as poly(butylene succinate) (Bionolle no.1001), poly(butylene succinate adipate copolymer) (Bionolle no.3001 and no.3020) were irradiated to give crosslinking structure in the presence of inorganic materials. Pure Bionolle no.1001, Bionolle no.3001 and no. 3020 have low gel fraction in radiation. These samples have high gel fraction by irradiation in the presence of silicon dioxide and carbon black, especially for Bionolle no.3001. Biodegradability of crosslinked Bionolle no.3001 evaluated by enzymatic and soil burial tests were accelerated by addition of inorganic materials. (author)