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  1. University of Yangon
  2. Department of Industrial Chemistry

Rating on Biodegradability of Microwave-Induced Low Density Polyethylene-Totally Degradable Plastic Additives (LDPE-TDPA) in Petri Dish Screen Test by ISO 846

http://hdl.handle.net/20.500.12678/0000007459
http://hdl.handle.net/20.500.12678/0000007459
cc00e791-926d-4b34-bd2d-e925867a8569
0224a651-e9bc-4035-aaae-255cb87b4376
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Journal article
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Publication
Title
Title Rating on Biodegradability of Microwave-Induced Low Density Polyethylene-Totally Degradable Plastic Additives (LDPE-TDPA) in Petri Dish Screen Test by ISO 846
Language en
Publication date 2010-01-01
Authors
Soe Soe Than
Bacani, Florinda T.
Roces, Susan A.
Unno, Hajime
Description
The environmental concern Oil accumulation (If throwaway plastic materials impose the synthesis of oxo-biodegradable plastic such as Low-Density Polyethylene-Totally Degradable Plastic Additives (LDPE-TDPA) plastic polymer as a waste management option for polymer in the environment in recent years.
In order to enhance the biodegradability of LDPE-TDPA, initial oxidation through microwave induction was conducted for its disintegration by using a domestic microwave oven of 950 W at the frequency of 2.45 GHz and indicated 17.02% decreased value of its tensile strength. The resulted microwave induced plastic was then exposed to the activated sludge microorganisms withdrawn from wastewater treatment plant under anaerobic condition in solid environment in petri dishes.
The assessing the bacteria and fungal resistance was conducted by the rating scheme based on visual assessment used by ISO 846. Weight loss of 28-day duration in petri dish test recorded that microwave induced film reached 3.92% while untreated film occurred 1.8.2%. Surface morphological changes and weight losses of biodegraded plank films showed the assimilation of activated sludge microorganisms based on SEM analysis and spectral imaging analysis. The rating level of microbial resistance to both plastic films was identified as 3 due to more than 25% cover of microorganisms on the surface.
Keywords
LDPE- TDPA, microwave, induction, activated sludge microorganisms., rating by ISO 846
Journal articles
Journal of the Myanmar Academy Arts and Science
417-425
Vol. VIII. No.1
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