Accelerated ageing and lifetime prediction of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) in distilled water

Deroiné, Morgan; Duigou, Antoine Le; Corre, Yves-Marie; Gac, Pierre‐Yves Le; Davies, Peter; César, Guy; Bruzaud, Stéphane

doi:10.1016/j.polymertesting.2014.07.018

Cited by 66 publications

(50 citation statements)

References 34 publications

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“…In this sense, both agents, water and temperature can sinergically act to simulate real service conditions. This has been reported for neat [219], [220] and reprocessed PLA [221], [222], PHAs [223], [224], PCL, and blends [225] or composites such as PLA/sisal [226], [227], PHBV/sisal [228], or poly(butylene sebacate) (PBS)/montmorillonite [229], among others.…”

Section: Hydrolytic and Hydrothermal Degradationmentioning

confidence: 60%

Long-term properties and end-of-life of polymers from renewable resources

Badía

Cháfer

Ribes‐Greus

2017

Polymer Degradation and Stability

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The long-term properties and end-of-life of polymers are not antagonist issues. They actually are inherently linked by the duality between durability and degradation. The control of the service-to-disposal pathway at useful performance, along with low-impact disposal represents an added-value. Therefore, the routes of design, production, and discarding of bio-based polymers must be carefully strategized. In this sense, the combination of proper valorisation techniques, i.e. material, energetic and/or biological at the most appropriate stage should be targeted. Thus, the consideration of the end-of-life of a material for a specific application, instead of the end-of-life of a material should be the fundamental focus. This review covers the key aspects of lab-scale techniques to infer the potential of performance and valorisation of polymers from renewable resources as a key gear for sustainability.

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Section: Hydrolytic and Hydrothermal Degradationmentioning

confidence: 60%

Long-term properties and end-of-life of polymers from renewable resources

Badía

Cháfer

Ribes‐Greus

2017

Polymer Degradation and Stability

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“…This could be related to the increased crystallinity and subsequently increase in modulus . A number of researchers have observed a similar tendency in the modulus after exposure to different weathering conditions . These studies were concluded that the modulus improvement of the conditioned samples is associated with structural relaxation, increase in crystallinity, crystal perfection, and increase of lamella thickness.…”

Section: Resultsmentioning

confidence: 86%

“…The durability of the polymers and composites is strongly related to the degradation mechanism. The degradation mechanism is a key factor for the lifetime prediction of polymeric materials . If the polymeric materials maintain their required mechanical performance at least 60 weeks at elevated temperature (50°C) and humidity (90%) it may be used for 10 year durable applications .…”

Section: Introductionmentioning

confidence: 99%

Hydrolytic degradation of biodegradable polyesters under simulated environmental conditions

Muthuraj

Misra

Mohanty

2015

J of Applied Polymer Sci

112

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In this study, the durability of poly(butylene succinate) (PBS), poly(butylene adipate-co-terephthalate) (PBAT), and PBS/ PBAT blend was assessed by exposure to 50 C and 90% relative humidity for a duration of up to 30 days. Due to the easy hydrolysis of esters, the mechanical properties of PBS and PBAT were significantly affected with increasing conditioning time. The PBS, PBAT, and PBS/PBAT showed an increase in modulus as well as a decrease in tensile strength and elongation at break with increased exposure time. Furthermore, the impact strength of PBAT remains unaffected up to 30 days of exposure. However, it was clearly observed that the fracture mode of PBS/PBAT changed from ductile to brittle after being exposed to high heat and humid conditions. This may be attributed to the hydrolysis products of PBS accelerating the degradation of PBAT in the PBS/PBAT blend. The differential scanning calorimetry results suggested that the crystallinity of the samples increased after being exposed to elevated temperature and humidity. This phenomenon was attributed to the induced crystallization from low molecular weight polymer chains that occurred during hydrolysis. Therefore, low molecular weight polymer chains are often favored to the crystallinity enhancement. The increase in crystallinity eventually increased the modulus of the conditioned samples. The enhanced crystallinity was further confirmed by polarizing optical microscopy analysis. Moreover, the hydrolysis of the polyesters was evaluated by scanning electron microscopy, rheology, and Fourier transform infrared spectroscopy analysis.

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“…This study highlights and confirms an entire bioassimilation of the PHBV film in natural environment thanks to the bacterial attacks on the surface. As recently published [38], the ageing of PHBV was also studied in distilled water and the results indicated that no surface erosion was detected in the absence of bacteria and / or microorganisms. The PHBV biodegradation in natural environments is therefore initiated by the enzymatic hydrolysis reaction with PHA-degrading enzymes.…”

Section: Liquid Inoculum: Seawater Loadedmentioning

confidence: 75%

Natural Degradation and Biodegradation of Poly(3-Hydroxybutyrate-co-3-Hydroxyvalerate) in Liquid and Solid Marine Environments

et al. 2015

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In this study, natural degradation and biodegradation of poly(3-hydroxybuyrate-co-3-hydroxyvalerate) (PHBV) films were followed in different marine environments. First of all, ageing of PHBV films was investigated in natural seawater for 180 days and degradation was followed by means of weight loss measurements, scanning electron microscopy (SEM), differential scanning calorimetry and steric exclusion chromatography. In a second part, biodegradation tests were performed on PHBV powder, by following carbon dioxide (CO2) release(,) to highlight the PHBV bioassimilation of marine microorganisms. Three different marine environments were considered for biodegradation tests: a solid inoculum with foreshore sand, a solid-liquid inoculum with sand and seawater and a liquid inoculum with seawater. In the latter, a biofilm was added to study the influence of microorganisms on biodegradation kinetics. The films aged under natural conditions show a large loss of weight after 180 days in immersion, around 36 %, confirmed by SEM pictures which show an increase of the surface erosion and a decrease of the sample thickness. Microorganisms' attack occurred as suggested by CO2 release during biodegradation tests, whatever the environment studied.

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Accelerated ageing and lifetime prediction of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) in distilled water

Cited by 66 publications

References 34 publications

Long-term properties and end-of-life of polymers from renewable resources

Long-term properties and end-of-life of polymers from renewable resources

Hydrolytic degradation of biodegradable polyesters under simulated environmental conditions

Natural Degradation and Biodegradation of Poly(3-Hydroxybutyrate-co-3-Hydroxyvalerate) in Liquid and Solid Marine Environments

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