A review of biodegradable polymers: uses, current developments in the synthesis and characterization of biodegradable polyesters, blends of biodegradable polymers and recent advances in biodegradation studies

Amass, W; Amass, Allan J.; Tighe, Brian

doi:10.1002/(sici)1097-0126(1998100)47:2<89::aid-pi86>3.0.co;2-f

Cited by 920 publications

(551 citation statements)

References 61 publications

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“…Their chemical structure (Figure 1) is very similar to the highly popular synthetic biodegradable polymers, the polylactides (PLA) and their copolymers with glycolides, poly(lactide-coglycolide) (PLGA), but they generally degrade at a much slower rate (Amass et al, 1998).…”

Section: Introductionsupporting

confidence: 94%

“…There was no evidence of surface erosion. These results are in agreement with other experimental results obtained previously on the slow degradation of these polymers in a similar medium (Holland, 1986;Amass et al, 1998). …”

Section: Degradation In Vitromentioning

confidence: 99%

“…Poly-3-hydroxybutyrate (PHB) and its copolymers with hydroxyvalerate (PHB-HV) are the most widely used members of this biopolymer group (Amass et al, 1998). They are produced biosynthetically by bacteria from natural raw materials and indeed can be readily broken down by microorganisms under different conditions.…”

Section: Introductionmentioning

confidence: 99%

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The effect of some processing conditions on the characteristics of biodegradable microspheres obtained by an emulsion solvent evaporation process

Maia

Santana

Ré

2004

Braz. J. Chem. Eng.

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-Unloaded microspheres were prepared from polyhydroxybutyrate (PHB) and polyhydroxybutyrateco-valerate (PHB-HV) polymers using an oil-in-water emulsion solvent evaporation method. The study was conducted to evaluate how the polymer and some process parameters affect properties of the final microspheres such as particle size, superficial area, zeta potential, surface morphology and microsphere degradation. The variables included surfactant concentration in the emulsion water phase and solvent composition. From the results, it was found that the parameters affecting microsphere size the most were surfactant concentration in the emulsion water phase and solvent composition. Properties such as zeta potential, surface area and surface morphology remained pratically unchanged over the range of the processing conditions studied here.

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Section: Introductionsupporting

confidence: 94%

Section: Degradation In Vitromentioning

confidence: 99%

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The effect of some processing conditions on the characteristics of biodegradable microspheres obtained by an emulsion solvent evaporation process

Maia

Santana

Ré

2004

Braz. J. Chem. Eng.

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“…Recently there has been a huge growth in the development of bio-degradable plastics to reduce the environmental impact of the disposal of conventional oil-based plastics [1][2][3]. Those bio-degradable polymers that are also bio-based, i.e.…”

Section: Introductionmentioning

confidence: 99%

Optimising Ductility of Poly(Lactic Acid)/Poly(Butylene Adipate-co-Terephthalate) Blends Through Co-continuous Phase Morphology

et al. 2018

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This paper examines the effect of the melt viscosities of the two component polymers on the morphology and mechanical properties of a series of biodegradable polymer blends. Melt blended compounds of poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) are prepared and their melt viscosities, thermal properties, crystallinity, mechanical properties and phase morphology are investigated. From the relative melt viscosities of PLA and PBAT in the processing regime used in the study, it is possible to calculate the volume fraction at which a co-continuous phase structure is formed. The predicted value is 19 wt% of PBAT and this value is verified by the results of mechanical properties, where results for elongation-to-break show a dramatic rise from around 10% up to 300% in the composition range between 10 and 20 wt% of PBAT. The co-continuous phase structure is also validated by scanning electron microscopy. Graphical AbstractKeywords Poly(lactic acid) · Poly(butylene adipate-co-terephthalate) · Co-continuous phase · Biodegradable · Blends

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“…Devido à sua biocompatibilidade, capacidade de formar blendas e copolímeros compatíveis com uma vasta gama de outros polímeros, tem sido utilizado para melhorar as propriedades mecânicas, processabilidade e permeabilidade dos materiais, expandindo as suas aplicações [3,4] . O PCL é importante pela sua grande aplicação industrial e forma sistemas miscíveis com diversos polímeros sintéticos, inclusive com o PVC [5] .…”

Section: Introductionunclassified

Biodegradação de filmes de PP/PCL em solo e solo com chorume

2010

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Resumo: Filmes de blenda de poli(ε-caprolactona) (PCL) e polipropileno (PP) foram obtidos por moldagem por compressão. O estudo da biodegradação de filmes de blendas de PP/PCL em solo e solo com chorume foi obtido pela evolução de CO 2 , perda de massa, ângulo de contato, microscopia eletrônica de varredura (MEV) e calorimetria exploratória diferencial (DSC). As análises de evolução de CO 2 mostraram que a biodegradação da blenda de PP/PCL em solo com chorume foi maior que a dos homopolímeros, sugerindo que os polímeros na blenda são mais suscetíveis à degradação, o que se deve à não interação entre PP e PCL. Os resultados também mostraram que os microrganismos do solo com chorume provocaram uma erosão superficial. Verificou-se que a biodegradação do PCL é inibida pelos microrganismos do chorume adicionados no solo. Palavras-chave: Polímeros sintéticos, polímeros biodegradáveis, solo, polipropileno, poli(caprolactona). Study of Biodegradation of PP/PCL Films in Soil and Soil with Leachate LandfillAbstract: Blend films of polycaprolactone (PCL) and polypropylene (PP) have been obtained by melt-pressing of both components. The biodegradation of PP/PCL blend films in soil and soil with leachate landfill has been assessed with measurements of evolution of CO 2 , weight loss, contact angle, scanning electronic microscopy (SEM) and differential scanning calorimetry (DSC). The respirometric tests showed that the PP/PCL biodegradation in the soil with leachate was higher than the homopolymers, suggesting that the polymers in the blend are more susceptible to biodegradation owing to the lack of interaction between PP and PCL. The results also showed that biodegradation due to microorganisms in the soil with leachate occurred by surface erosion. It was found that the PCL biodegradation is inhibited by the leachate microorganisms added in the soil.

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A review of biodegradable polymers: uses, current developments in the synthesis and characterization of biodegradable polyesters, blends of biodegradable polymers and recent advances in biodegradation studies

Cited by 920 publications

References 61 publications

The effect of some processing conditions on the characteristics of biodegradable microspheres obtained by an emulsion solvent evaporation process

The effect of some processing conditions on the characteristics of biodegradable microspheres obtained by an emulsion solvent evaporation process

Optimising Ductility of Poly(Lactic Acid)/Poly(Butylene Adipate-co-Terephthalate) Blends Through Co-continuous Phase Morphology

Biodegradação de filmes de PP/PCL em solo e solo com chorume

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