Action of soil microorganisms on PCL and PHBV blend and films

Gonçalves, S. P. C.; Martins-Franchetti, S. M.

doi:10.1007/s10924-010-0209-9

Cited by 29 publications

(26 citation statements)

References 23 publications

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“…However, certain properties of PBS such as gasbarrier properties, softness, melt viscosity for further processing was insufficient for its various applications [132]. The main degradation products are found to be 1,4succinate, succinate-butane diol, succinate-butane diol-succinate and succinate-butane diolsuccinate-butane diol as obtained by using mass spectrometry [135]. The biodegradation behavior of PBS films in the presence of Fusarium was characterized through differential scanning calorimetry and scanning electron microscopy ( Figure 6C) showing gradual roughened surface over time of biodegradation [71].…”

Section: Poly(butylene Succinate)mentioning

confidence: 98%

Controlled biodegradation of polymers using nanoparticles and its application

Kumar

Maiti

2016

RSC Adv.

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The disposal of non-degradable plastics is augmented exponentially as a result of poor recycling efficacy. The development of biodegradable plastics has become indispensable in last two decades because of its origin from renewable resources. The potential interest in biodegradable plastics involves eco-friendly obliteration via microbial action which transform into carbon dioxide and water resulting pollution free natural system. Even though its lucrative interest lies in multiple areas, some of the properties such as brittleness, poor thermal, mechanical and low gas barrier properties restrict their practical uses. Incorporation of nanoparticle in polymer matrix or by making nanocomposites overcomes the shortcomings of the biodegradable polymers. For further improving the aforementioned properties, several approaches have been utilized especially incorporation of nanoparticle in polymer matrix to prepare nanocomposites. One of the great advantages of nanoparticles is to tune the rate of biodegradation (both increase and decrease as compared to the rate of pure polymer) depending upon the need. Thus, chemical, physical and biological properties of the biodegradable polymers can be modified and controlled for sustainable application in medical and other areas. This review considers the major concerns about the type of biodegradable polyesters and their nanocomposites, great details about mechanism of biodegradation, factors influencing the biodegradation and their applications in biomedical and packaging industries.

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Section: Poly(butylene Succinate)mentioning

confidence: 98%

Controlled biodegradation of polymers using nanoparticles and its application

Kumar

Maiti

2016

RSC Adv.

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“…The active site in its catalytic domain is specific for the hydrolysis of PHB molecules (Doi and Abe 1997;Yutaka et al 2009). The enzymes secreted by microorganisms preferentially degrade the amorphous part of polymers rather than its crystalline region, higher crystallinity reduces the polymer degradability (Gonçalves and Franchetti 2010;Sudesh et al 2000). The addition of the Acrylate increases the cystallinity in the film and because of this the degradation rate of the blended film is lower as compared to the PHB film.…”

Section: Thermal Propertiesmentioning

confidence: 99%

Biodegradability studies of polyhydroxyalkanoate (PHA) film produced by a marine bacteria using Jatropha biodiesel byproduct as a substrate

Shrivastav

Mishra

Pancha

et al. 2010

World J Microbiol Biotechnol

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Polyhydroxyalkanoates are water-insoluble, hydrophobic polymers and can be degraded by microorganisms that produce extracellular PHA depolymerase. The present work was aimed to evaluate the degradability of Polyhydroxyalkanoate film produced by Halomonas hydrothermalis using Jatropha biodiesel byproduct as a substrate. PHB films were subjected to degradation in soil and compared with the synthetic polymer (acrylate) and blend prepared using the synthetic polymer (acrylate) and PHB. After 50 days, 60% of weight loss in PHB film and after 180 days 10% of blended film was degraded while no degradation was found in the synthetic film. Scanning electron microscopy and confocal microscopy revealed that after 50 days the PHB film and the blended film became more porous after degradation while synthetic film was not porous.The degradative process was biologically mediated which was evident by the control in which the PHB films were kept in sterile soil and the films showed inherent integrity over time. The TGA and DSC analysis shows that the melting temperatures were changed after degradation indicating physical changes in the polymer during degradation.

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“…Poly(ε‐caprolactone) [PCL] is a polyester produced by the ring‐opening polymerization of ε‐caprolactone. PCL is reported also as biodegradable and biocompatible . PCL has been blended with PHAs using the casting method .…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, when PCL content is lower than 60%, PHB phase became the continuous phase and PCL inclusions did not affect blend rigidity. The presence of a two‐phase system in solvent‐casted blends of PHB and other PHB copolymers with PCL has been thoroughly studied …”

Section: Introductionmentioning

confidence: 99%

Thermal processing influence on mechanical, thermal, and biodegradation behavior in poly(β‐hydroxybutyrate)/poly(ε‐caprolactone) blends: A descriptive model

Vergara-Porras

Gracida

Pérez-Guevara

2016

J of Applied Polymer Sci

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Poly(β‐hydroxybutyrate) [PHB] is a biodegradable and biocompatible polymer produced by some bacteria genders. To improve mechanical properties, PHB has been blended with other polymers. Compression‐molded blends of PHB and poly(ε‐caprolactone) [PCL] (70/30 mass ratio) were cooled to room temperature following five different thermal treatments after molding at 180 °C. Blends processed with higher cooling rates were easier to biodegrade, nevertheless elongation at break and tensile strength decreased. Slower cooling kinetics and isothermal treatments increased perfection of crystals, as seen in differential scanning calorimetry and X‐ray diffraction and spherulites size. A descriptive model is proposed herein where thermal, biodegradation, tensile properties, and crystal features were related to cooling kinetics applied. It is proposed that properties of 70/30 (PHB/PCL) blends can be predetermined by an adequate control of thermal conditions during processing. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43569.

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Action of soil microorganisms on PCL and PHBV blend and films

Cited by 29 publications

References 23 publications

Controlled biodegradation of polymers using nanoparticles and its application

Controlled biodegradation of polymers using nanoparticles and its application

Biodegradability studies of polyhydroxyalkanoate (PHA) film produced by a marine bacteria using Jatropha biodiesel byproduct as a substrate

Thermal processing influence on mechanical, thermal, and biodegradation behavior in poly(β‐hydroxybutyrate)/poly(ε‐caprolactone) blends: A descriptive model

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