Effect of Melt Processing on Crystallization Behavior and Rheology of Poly(3-hydroxybutyrate) (PHB) and its Blends

El-Hadi, Ahmed Mohamed; Schnabel, Rainer; Straube, E.; Müller, G.; Riemschneider, Marion

doi:10.1002/1439-2054(20020501)287:5<363::aid-mame363>3.0.co;2-d

Cited by 73 publications

(73 citation statements)

References 11 publications

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“…For this purpose, the nucleating agents are added, and then smaller spherulites with improved mechanical properties are produced. The morphology, processing conditions, glass temperature transition and crystallinity influence the properties of the blend 59,60 . As a rule, blending has been known as a strategy of tailoring the properties of PHAs while maintaining biodegradability 67 .…”

Section: Blendingmentioning

confidence: 99%

“…Young's modulus and tensile strength of PHB are comparable to those reported for PP, but the elongation at break (5±10 %) is significantly lower 56 . Thus, stiffness of PHB is attributed to cracks within the PHB spherulites that form under conditions of non-externally applied stress [57][58][59][60] . Long storage at room temperature causes brittleness to increase.…”

Section: Phb Propertiesmentioning

confidence: 99%

“…It is isotactic and does not include chain branching. So it flows easily during processing [58][59][60] .…”

Section: Phb Propertiesmentioning

confidence: 99%

“…To improve the mechanical properties of PHB or PHBV, and to increase the rate of degradation of those polymers, they can be mixed with other polymers or additives 98,99 including nucleating agents (e.g. plasticizers as glycerol, saccharin, tributyrin or triacetin) or processing lubricants (glycerol mono or tri stearate) 59,60 . By obtaining plasticization, the PHBV properties are modified 100 .…”

Section: Blendingmentioning

confidence: 99%

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Application of Poly(hydroxyalkanoate) In Food Packaging: Improvements by Nanotechnology

Khosravi‐Darani¹

2015

Chem.Biochem.Eng.Q.

123

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The environmental impact of plastic usage is of critical concern and too great to repair. A shift toward biodegradable food packaging is one option. The aim of this review paper is the study of the potential of biodegradable materials for food packaging. The main characteristics in relation to food usage can be narrowed down to mass transfer (gas and water vapor), thermal and mechanical properties. Among several kinds of biodegradable polymers, poly(hydroxyalkanoate) is one of the favorable candidates for food packaging due to its physical and mechanical properties, biodegradability, with low permeability for O 2 , H 2 O and CO 2 without residues of catalysts and water solubility. The main focus of this article is to address poly(hydroxyalkanoate) as a potential candidate for food packaging. The need of applying biobased polymers in food packaging is presented in the introduction of this study. We also describe the most common biopolymers providing a brief overview of classification and application. This is followed by an outline of biopolymer production and a main section in which the properties of poly(hydroxybutyrate)-based nanocomposites of greatest relevance to food packaging are discussed. Furthermore, several approaches for improvement of poly(hydroxybutyrate) properties are described and the role of nanotechnology to improve its mechanical properties is presented. Finally, the article concludes with a summary as well as some possible future trends.

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Section: Blendingmentioning

confidence: 99%

Section: Phb Propertiesmentioning

confidence: 99%

“…It is isotactic and does not include chain branching. So it flows easily during processing [58][59][60] .…”

Section: Phb Propertiesmentioning

confidence: 99%

Section: Blendingmentioning

confidence: 99%

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Application of Poly(hydroxyalkanoate) In Food Packaging: Improvements by Nanotechnology

Khosravi‐Darani¹

2015

Chem.Biochem.Eng.Q.

123

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“…Thermal analysis was performed in a Shimadzu DSC-60 differential scanning calorimeter, under a nitrogen flow of 50 mL/min to minimize oxidative degradation to which the PHB is prone [8,16] . Samples of approximately 5 mg were wrapped with aluminum foil to minimize the effect of the polymer thermal conductivity, which may cause differential broadening and shifting of peak positions [17] .…”

Section: Differential Scanning Calorimetry (Dsc) Measurementsmentioning

confidence: 99%

Melting and crystallization of poly(3-hydroxybutyrate): effect of heating/cooling rates on phase transformation

et al. 2015

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SbstractWe studied the crystallization and melting phenomena of poly (3-hydroxybutyrate) (PHB), a biodegradable and biocompatible semi-crystalline thermoplastic, obtained from renewable resources. Its high crystallinity motivated several studies on crystallization and melting behavior, and also on ways to increase the amorphous polymer fraction. The effect of heating and cooling rates on the crystallization and melting of commercial PHB was investigated by differential scanning calorimetry. Several rates, ranging from 2.5 to 20 °C min -1 , were used to study the phase changes during heating/cooling/reheating cycles. The results showed that PHB partially crystallizes from the melt during the cooling cycle and partially cold crystallizes on reheating, and that the relative amount of polymer crystallizing in each stage strongly depends on the cooling rate. The melt and cold crystallization temperatures, as well as the rates of phase change, depend strongly on the cooling and heating rates.

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FTIRSpectroscopy and Spectroscopic Imaging for the Analysis of Polymers and Multicomponent Polymer Systems

Ewing

Kazarian

2021

Spectroscopic Techniques for Polymer Characterization

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Effect of Melt Processing on Crystallization Behavior and Rheology of Poly(3-hydroxybutyrate) (PHB) and its Blends

Cited by 73 publications

References 11 publications

Application of Poly(hydroxyalkanoate) In Food Packaging: Improvements by Nanotechnology

Application of Poly(hydroxyalkanoate) In Food Packaging: Improvements by Nanotechnology

Melting and crystallization of poly(3-hydroxybutyrate): effect of heating/cooling rates on phase transformation

FTIRSpectroscopy and Spectroscopic Imaging for the Analysis of Polymers and Multicomponent Polymer Systems

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