Publication: Soil Inoculation with Pseudomonas geniculata WS3 for Accelerating the Biodegradation Process of In Situ Compatibilized PBS/PLA Blends Doped with HPQM
Issued Date
2020-01-01
Resource Type
ISSN
15728919
15662543
15662543
Other identifier(s)
2-s2.0-85079149480
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Polymers and the Environment. (2020)
Suggested Citation
Panupong Srimalanon, Benjaphorn Prapagdee, Narongrit Sombatsompop Soil Inoculation with Pseudomonas geniculata WS3 for Accelerating the Biodegradation Process of In Situ Compatibilized PBS/PLA Blends Doped with HPQM. Journal of Polymers and the Environment. (2020). doi:10.1007/s10924-020-01670-6 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/53681
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Soil Inoculation with Pseudomonas geniculata WS3 for Accelerating the Biodegradation Process of In Situ Compatibilized PBS/PLA Blends Doped with HPQM
Abstract
© 2020, Springer Science+Business Media, LLC, part of Springer Nature. This work studied the biodegradative activity of Pseudomonas geniculata WS3 and Stenotrophomonas pavanii CH1, PLA-degrading bacteria, on films with different ratios of polybutylene succinate (PBS)/polylactic acid (PLA), in submerged cultures. Effects of PBS, dicumyl peroxide (DCP) and 2-hydroxypropyl-3-piperazinyl quinoline carboxylic acid methacrylate (HPQM) of in situ compatibilized PBS/PLA blends were also examined under soil burial biodegradation at mesophilic and thermophilic conditions. The results from the submerged experiments showed that the weight loss of PBS/PLA blends increased with increasing PBS content. All blending ratios of PBS/PLA were more degraded by P. geniculata WS3 than S. pavanii CH1. After soil burial, PBS/PLA films with 40/60 wt% showed higher biodegradation than those with 20/80 wt% with or without P. geniculata WS3 inoculation. However, the biodegradation of PBS/PLA blends inoculated with P. geniculata WS3 was higher than that of the uninoculated treatment. The addition of DCP in PBS/PLA blends decreased the biodegradation and weight loss. Unexpectedly, the degree of biodegradation and weight loss of PBS/PLA at a ratio of 20/80 wt% with DCP added were higher than that of PBS/PLA at a ratio of 40/60 wt% with DCP added. The addition of HPQM, showing antibacterial properties, decreased the biodegradation of PBS/PLA blends by 1.4 to 1.8-fold compared to those without HPQM addition. It could be concluded that the inoculation of P. geniculata WS3 mainly promoted the biodegradation of PBS/PLA blends under mesophilic condition. However, the addition of DCP and HPQM decreased the biodegradation of the PBS/PLA blends.