scholarly journals About Introduction of Biodegradable Plastic Products in EXPO'05, Japan

Kobunshi ◽  
2005 ◽  
Vol 54 (3) ◽  
pp. 134-135
Author(s):  
Kazushi OSHIMA
2021 ◽  
Author(s):  
Hanmin Wang ◽  
Tong-Qi Yuan ◽  
Guoyong Song ◽  
Runcang Sun

The excessive use of petroleum-based non-biodegradable plastic products has resulted in severe environmental pollution and ecological problems, which has stimulated the development of biodegradable and renewable alternative materials. Lignin, as...


Author(s):  
Sudhakar Muniyasamy ◽  
Sudhakar Muniyasamy ◽  
Kulanthaisamy Mohanrasu ◽  
Kulanthaisamy Mohanrasu ◽  
Abongile Gada ◽  
...  

2019 ◽  
Vol 821 ◽  
pp. 359-365
Author(s):  
Karl Vincent N. Alvarez ◽  
Regina Mae V. Bulaong ◽  
Eloisa Nher A. Hipolito ◽  
Jonard Jairo P. Reyes ◽  
Astrid Ayla E. Liberato ◽  
...  

Biodegradable plastics are viewed as one of the most promising solutions to plastic waste dilemma due to its natural degradative properties. Fossil fuel-based polymers have been infused with bio-based additives (e.g. starch) and have been used to produce biodegradable plastic products such as bags and cutleries. While several studies have dealt with degradation of polymers with bio-based additives, there is work yet to be done on degradation of commercially-available biodegradable plastic products. Here we evaluate degradability upon exposure to soil incubation and UV of three common starch-based plastic utensil brands in the Philippines that claim biodegradability. Analysis of IR absorbance spectra of post-exposure samples indicated high propensity towards photodegradation. Furthermore, estimation of full degradation period confirmed the biodegradability of starch-amended plastics which were limited to two brands. The presence of 19.22% and 24.18% starch in the plastic showed complete decomposition period of 156 and 92 days, respectively. This is a significant improvement over poor degradability exhibited by conventional plastics which often takes 450 to 1000 years. The reduction of degradation time through starch incorporation may prove to benefit manufacturers in fabricating more environmentally-friendly plastic products in the future.


2016 ◽  
Vol 5 (09) ◽  
pp. 4874
Author(s):  
Manisha Satpathi* ◽  
Ravinder Singh

Dioctyl phthalate (DOP) commonly used as plasticizer enters into aquatic environment from the industries manufacturing plastic products, PVC resins, cosmetics and many other commercial products. Therefore, this study was designed to evaluate the acute toxicity effects of Dioctyl phthalate on fresh water fish Clarias batrachus. The 96 hour LC50 of Dioctyl phthalate in Clarias batrachus was estimated as 14.5ml/L. Histopathological changes in liver of Clarias batrachus were determined by exposing them to a fraction of LC50(1/5th) dose with every change of water for 30 days.The liver of Clarias batrachus was excised at every interval of 30 days and histological changes of liver were studied under light microscopy. Liver tissues showed abnormalities. Centrilobular vacuolation, necrosis, eccentric nuclei and enlarged nuclei, Centrilobular degeneration of hepatocytes were observed in liver tissue of fish.


2021 ◽  
pp. 0734242X2110031
Author(s):  
Ana Pires ◽  
Paula Sobral

A complete understanding of the occurrence of microplastics and the methods to eliminate their sources is an urgent necessity to minimize the pollution caused by microplastics. The use of plastics in any form releases microplastics to the environment. Existing policy instruments are insufficient to address microplastics pollution and regulatory measures have focussed only on the microbeads and single-use plastics. Fees on the use of plastic products may possibly reduce their usage, but effective management of plastic products at their end-of-life is lacking. Therefore, in this study, the microplastic–failure mode and effect analysis (MP–FMEA) methodology, which is a semi-qualitative approach capable of identifying the causes and proposing solutions for the issue of microplastics pollution, has been proposed. The innovative feature of MP–FMEA is that it has a pre-defined failure mode, that is, the release of microplastics to air, water and soil (depending on the process) or the occurrence of microplastics in the final product. Moreover, a theoretical recycling plant case study was used to demonstrate the advantages and disadvantages of this method. The results revealed that MP–FMEA is an easy and heuristic technique to understand the failure-effect-causes and solutions for reduction of microplastics and can be applied by researchers working in different domains apart from those relating to microplastics. Future studies can include the evaluation of the use of MP–FMEA methodology along with quantitative methods for effective reduction in the release of microplastics.


2021 ◽  
Vol 1073 (1) ◽  
pp. 012076
Author(s):  
M Hartono ◽  
G Gumono ◽  
W Wirawan ◽  
N Qosim ◽  
H Wicaksono

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