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Microbial Degradation Behavior in Seawater of Polyester Blends Containing Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx)

Marine Drugs 2018 105 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Hitoshi Sashiwa, Ryūji Fukuda, Ryūji Fukuda, Tetsuo Okura, Tetsuo Okura, Tetsuo Okura, Tetsuo Okura, Shunsuke Sato, Shunsuke Sato, Shunsuke Sato, Tetsuo Okura, Shunsuke Sato, Atsuyoshi Nakayama Tetsuo Okura, Shunsuke Sato, Atsuyoshi Nakayama Shunsuke Sato, Atsuyoshi Nakayama Atsuyoshi Nakayama Atsuyoshi Nakayama

Summary

Researchers tested the marine biodegradability of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) and its blends with PBAT, PBS, and PLA using a biochemical oxygen demand method in seawater, finding that PHBHHx alone degraded efficiently and that blend degradation rates decreased proportionally with lower PHBHHx content. Surface morphology of the blend sheets was identified as a key factor controlling overall biodegradation rates.

Polymers

PLA

Study Type Environmental

The microbial degradation behavior of poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyhexanoate) (PHBHHx) and its compound with several polyesters such as poly(butylene adipate-<i>co</i>-telephtharate) (PBAT), poly(butylene succinate) (PBS), and polylactic acid (PLA) in seawater was tested by a biological oxygen demand (BOD) method. PHBHHx showed excellent biodegradation in seawater in this study. In addition, the biodegradation rate of several blends was much influenced by the weight ratio of PHBHHx in their blends and decreased in accordance with the decrement of PHBHHX ratio. The surface morphology of the sheet was important factor for controlling the biodegradation rate of PHBHHx-containing blends in seawater.

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