Carina Eldsäter - Profile on Academia.edu (original) (raw)
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Papers by Carina Eldsäter
Polymer Degradation and Stability, 1999
The eect of abiotic factors such as water and air on the degradation of poly(3-hydroxybutyrate-co... more The eect of abiotic factors such as water and air on the degradation of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) in a compost was investigated using simulated and natural environments. These include exposure in sterile water at 60 C, in air at 60 C and in a garden waste compost. In addition, the chain scission degradation mechanism of PHBV on immersion in sterile water at 60 C was studied in detail. The results show that during a period of 50 days, water and air have little or no eect on the degradation of PHBV in a garden waste compost. The degradation is due to microbial action only. According to the literature, the degradation of PHBV in sterile water follows a random chain scission process. We have found that degradation follows random chain scission kinetics only in the beginning of the immersion in sterile water at 60 C. After longer immersion times (200 days), the degradation process no longer obeyed ®rst order kinetics and a decrease in mol% HV in the copolymer was observed. #
Polymer Degradation and Stability, 1999
The eect of abiotic factors such as water and air on the degradation of poly(3-hydroxybutyrate-co... more The eect of abiotic factors such as water and air on the degradation of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) in a compost was investigated using simulated and natural environments. These include exposure in sterile water at 60 C, in air at 60 C and in a garden waste compost. In addition, the chain scission degradation mechanism of PHBV on immersion in sterile water at 60 C was studied in detail. The results show that during a period of 50 days, water and air have little or no eect on the degradation of PHBV in a garden waste compost. The degradation is due to microbial action only. According to the literature, the degradation of PHBV in sterile water follows a random chain scission process. We have found that degradation follows random chain scission kinetics only in the beginning of the immersion in sterile water at 60 C. After longer immersion times (200 days), the degradation process no longer obeyed ®rst order kinetics and a decrease in mol% HV in the copolymer was observed. #