Enhancement of poly(3-hydroxybutyrate) thermal and processing stability using a bio-waste derived additive

Persico, Paola; Ambrogi, Veronica; Baroni, Antonio; Santagata, Gabriella; Carfagna, Cosimo; Malinconico, Mario; Cerruti, Pierfrancesco

doi:10.1016/j.ijbiomac.2012.08.036

Cited by 43 publications

(32 citation statements)

References 51 publications

(55 reference statements)

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“…For PHB, G' started from a value of about 20,000 Pa, then rapidly decreased due to thermal degradation, eventually reaching a plateau after about 4000 s [4]. GPC measurements confirmed that chain scission started as soon as the polymer melted, and after 400 s M w dropped to 30% of the initial value.…”

Section: Blends Propertiesmentioning

confidence: 79%

“…Processability and stability: Rheology, GPC and TGA It is well known that the evolution of the material rheological properties directly reflects changes in molecular parameters, such as molecular weight, entanglement density, effect of additives and fillers. Understanding the rheological properties of polymer blends is necessary in establishing changes in the viscoelastic response and processability conditions, and rheological analysis represents a useful tool in evaluation and determination of the experimental conditions for PHB processing [4,36,49]. In the present work rheological characterization was carried out to evaluate the effect of AL and LRR on viscoelastic properties and thermal stability of the polymer.…”

Section: Blends Propertiesmentioning

confidence: 99%

“…The recovery of natural substances deriving from organic wastes of agro-food industries and biorefineries can provide value-added products and reduce waste production and related disposal fees [2,3]. In this frame, the use of several agro-industrial by-products as additives and fillers for biodegradable polymers has been reported [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

From biowaste to bioresource: Effect of a lignocellulosic filler on the properties of poly(3-hydroxybutyrate)

Angelini

Cerruti

Immirzi

et al. 2014

International Journal of Biological Macromolecules

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Section: Blends Propertiesmentioning

confidence: 79%

Section: Blends Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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From biowaste to bioresource: Effect of a lignocellulosic filler on the properties of poly(3-hydroxybutyrate)

Angelini

Cerruti

Immirzi

et al. 2014

International Journal of Biological Macromolecules

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“…Recently, Persico et al . claimed an enhancement of the thermal stability of PHB by adding pomace extract . Pomace extract contains, however, a large variety of chemical components which specific activities are unknown.…”

Section: Introductionmentioning

confidence: 99%

Effect of additives on the melt rheology and thermal degradation of poly[(R)‐3‐hydroxybutyric acid]

Arza

Jannasch

Johansson³

et al. 2014

J of Applied Polymer Sci

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Thermal degradation of poly[(R)23-hydroxybutyric acid] (PHB) during melt mixing results in random chain scission that produces shorter polymer chains containing crotonic and carboxyl end groups. One way of preventing this serious reduction of molar mass is to add agents that react with at least two of the newly generated end groups. Different types of commercially available additives known to react with carboxyl group, namely bis(3,4-epoxycyclohexylmethyl) adipate (BECMA), 2,2'-bis(2-oxazoline) (BOX), trimethylolpropane tris(2-methyl-1-aziridinepropionate) (PETAP), triphenyl phosphate (TPP), tris(nonylphenyl) phosphate (TNPP), polycarbodiimide (PCDI), and poly(methyl metharylate-co-glycidyl methacrylate) (GMA.MMA) were mixed with PHB by cocasting from solution in chloroform. Dynamic rheology as well as measurements of molar masses before and after dynamic analysis was used to evaluate the effect of the additives on the melt stability of PHB. Measurements of the dynamic shear modulus and the molar mass of molten PHB with the additives PCDI and GMA.MMA showed a minor improvement on the thermal stability. Furthermore, TPP and TNPP did not affect the thermal stability of PHB, whereas the presence of BECMA, BOX, and PETAP gave a strong decrease of the dynamic modulus compared with neat PHB.

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“…PHBV is used in tissue engineering of bone [170], cartilage [171], skin [172], and nerves [173]. PHA are also utilized in association with other polymers [174,175] or modified with additives to enhance their stability [176,177]. In dentistry, Ueda et al inserted medium-chain-length PHA into the defect created in a rabbit's mandible, showing osteoconductive properties which promoted bone regeneration.…”

Section: Polyestersmentioning

confidence: 99%

Biodegradable polymers for dental tissue engineering and regeneration

Conte¹,

Riccitiello²,

Luise³

et al. 2017

Biodegradable Polymers: Recent Developments and New Perspectives

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Enhancement of poly(3-hydroxybutyrate) thermal and processing stability using a bio-waste derived additive

Cited by 43 publications

References 51 publications

From biowaste to bioresource: Effect of a lignocellulosic filler on the properties of poly(3-hydroxybutyrate)

From biowaste to bioresource: Effect of a lignocellulosic filler on the properties of poly(3-hydroxybutyrate)

Effect of additives on the melt rheology and thermal degradation of poly[(R)‐3‐hydroxybutyric acid]

Biodegradable polymers for dental tissue engineering and regeneration

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