Biodegradation of poly(lactic acid) powders proposed as the reference test materials for the international standard of biodegradation evaluation methods

Kunioka, Masao; Ninomiya, Fumi; Funabashi, Masahiro

doi:10.1016/j.polymdegradstab.2006.03.003

Cited by 102 publications

(60 citation statements)

References 6 publications

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“…More than 60% of the composites with PLA got degraded within 60 days of the study while 60% degradation of only PLA could be achieved after 80 days. Similar duration of biodegradation of neat PLA has been reported, demonstrating the compostability of PLA [10][11][12]. More than 60% of the composites with PCL got degraded within 100 days of the study while 60% degradation of only PLA could be achieved within 120 days.…”

Section: Biodegradation Of Test Materials To Release Cosupporting

confidence: 81%

Comparative compostability and biodegradation studies of various components of green composites and their blends in simulated aerobic composting bioreactor

Pradhan

Reddy

Diebel

et al. 2010

Int J Plast Technol

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Biodegradable plastic composites designed with various natural and biobased material can potentially satisfy biodegradability specifications as per ASTM, CEN, ISO and OECD guidelines. A laboratory scale simulated aerobic composting facility (as per ASTM D 5338) was designed and utilized to determine and evaluate the extent of degradation of various components of compostable plastic composites. The materials of natural origin components like starch, microcrystalline cellulose, cellulose fibre, wheat straw, soy straw, distiller's dried grains with solubles (DDGS) and soy meal demonstrated ready degradability with conversion of 60% of the organic carbon to carbon dioxide. The individual polymers polylactic acid (PLA) and polycaprolactone (PCL) showed inherent degradability of 60% of the organic carbon to carbon dioxide within 180 days. The composites of polymers PLA with wheat straw and soy straw and PCL with DDGS and soy meal showed inherent degradability of 60% of the organic carbon to carbon dioxide within 180 days. Enhanced compostability of plastic is observed with inclusion of natural, ready degradable components in the composite in comparison to the individual polymer.

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Section: Biodegradation Of Test Materials To Release Cosupporting

confidence: 81%

Comparative compostability and biodegradation studies of various components of green composites and their blends in simulated aerobic composting bioreactor

Pradhan

Reddy

Diebel

et al. 2010

Int J Plast Technol

View full text Add to dashboard Cite

show abstract

“…In the initial stage, TPS degrades faster than PLA, and TPS is most susceptible to degradation as compared to PLA. Particle size is also an important factor for biodegradation; fine particles (nano-particles) involve a complex mechanism as compared to microparticles (Kunioka et al 2006). Pranamuda et al (1997) isolated Amycolatopsis and studied it for PLA degradation, finding 60% degradation of PLA film within 14 days.…”

Section: Polylactic Acid (Pla)mentioning

confidence: 99%

Review on the current status of polymer degradation: a microbial approach

Pathak

Bithel

2017

Bioresour. Bioprocess.

599

241

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Inertness and the indiscriminate use of synthetic polymers leading to increased land and water pollution are of great concern. Plastic is the most useful synthetic polymer, employed in wide range of applications viz. the packaging industries, agriculture, household practices, etc. Unpredicted use of synthetic polymers is leading towards the accumulation of increased solid waste in the natural environment. This affects the natural system and creates various environmental hazards. Plastics are seen as an environmental threat because they are difficult to degrade. This review describes the occurrence and distribution of microbes that are involved in the degradation of both natural and synthetic polymers. Much interest is generated by the degradation of existing plastics using microorganisms. It seems that biological agents and their metabolic enzymes can be exploited as a potent tool for polymer degradation. Bacterial and fungal species are the most abundant biological agents found in nature and have distinct degradation abilities for natural and synthetic polymers.

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“…Therefore it must be transformed to powder before being used in SVM process but typical mechanical crushing is not suitable for producing PLA powder due to heat generated during the crushing makes PLA tacky instead of becoming loose powder. Two previous techniques for making PLA powder are using dry ice to freeze PLA pellets before crushing [45] and producing powder from stirring liquid solution instead [19,46]. In this research, as illustrated in Fig.…”

Section: Transformation Of Pellets To Powdermentioning

confidence: 99%

Investigation of PLA-based scaffolds fabricated via SVM rapid prototyping

Phattanaphibul

Koomsap

2011

J Porous Mater

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Poly-lactic acid (PLA) is a biodegradable polymer that has been well accepted as a tissue engineering scaffold material. Recently, PLA has been applied in selective vacuum manufacturing (SVM), a new RP technique being developed, for fabricating scaffold. For this RP technique to be accepted for this purpose, its fabricated scaffolds must be tested for their properties. This paper presents an investigation of the properties of scaffolds fabricated from SVM technique. The results illustrated that the fabricated PLA scaffolds had porous structure. The porosity was about 71.65% with pore size ranged from 20 to 90 lm. The compressive modulus of elasticity was 2.07 ± 0.25 MPa, lying within the lower range of mechanical properties reported for soft tissue application. An indirect cytotoxicity test showed the cell viability of 75.92% which means that the specimens posed no threat to the cells and could be used as scaffolds for mammalian tissue culture.

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Biodegradation of poly(lactic acid) powders proposed as the reference test materials for the international standard of biodegradation evaluation methods

Cited by 102 publications

References 6 publications

Comparative compostability and biodegradation studies of various components of green composites and their blends in simulated aerobic composting bioreactor

Comparative compostability and biodegradation studies of various components of green composites and their blends in simulated aerobic composting bioreactor

Review on the current status of polymer degradation: a microbial approach

Investigation of PLA-based scaffolds fabricated via SVM rapid prototyping

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