Mechanical and thermal properties of poly(butylene succinate)/poly(3‐hydroxybutyrate‐<i>co</i>‐3‐hydroxyvalerate) biodegradable blends

Phua, Y.J.; Pegoretti, Alessandro; Araujo, Thiago Medeiros; Ishak, Z. A. Mohd

doi:10.1002/app.42815

Cited by 32 publications

(34 citation statements)

References 44 publications

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“…Therefore, an alky chain length of six to eight seems to be needed for the The impact of the alcohol-grafted CNCs on the thermomechanical behavior of PBS was studied using DMA ( Figure 8). The storage modulus and glass transition temperature values of neat PBS are in agreement with the values in the literature [57] (Table 3). Upon the addition of the alcohol-grafted CNCs, an increase of up to two-fold in the storage modulus was observed, which was dependent on the chain length of the grafted alcohol.…”

Section: Resultssupporting

confidence: 90%

Nano-Brushes of Alcohols Grafted onto Cellulose Nanocrystals for Reinforcing Poly(Butylene Succinate): Impact of Alcohol Chain Length on Interfacial Adhesion

Abushammala

2020

Polymers

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Despite the many interesting properties of cellulose nanocrystals (CNCs), their hydrophilicity is one of the main challenges for their processing with hydrophobic polymers and matrices. To overcome this challenge, this paper describes the preparation of brush-like CNCs with tailored surface properties by grafting alcohols of different chain lengths onto their surfaces. Ethanol, 1-butanol, 1-hexanol, and 1-octanol were grafted on the CNC surface using 2,4-toluene diisocyanate (TDI) as a linker. The CNCs were characterized for their structural, morphological, surface, and thermal properties. Because of the grafting, the water contact angle of the CNCs significantly increased from 32° to up to 120°, which was dependent on the chain length of the grafted alcohol. The thermal stability of the CNCs was also improved, mainly as a result of the reaction of TDI with the CNC hydroxyl groups. Later, the CNCs were used to reinforce films of poly(butylene succinate) (PBS), which were then characterized using dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA). An increase of up to two-fold in the storage modulus was observed using DMA, which was dependent on the chain length of the grafted alcohol. However, no change in the glass transition temperature or degradation temperature of PBS was detected. This approach is proved efficient for tailoring the surface properties of CNCs towards excellent interfacial adhesion in their composites.

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Section: Resultssupporting

confidence: 90%

Nano-Brushes of Alcohols Grafted onto Cellulose Nanocrystals for Reinforcing Poly(Butylene Succinate): Impact of Alcohol Chain Length on Interfacial Adhesion

Abushammala

2020

Polymers

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“…Even an addition of just 10 wt % PBS led to a clear reduction in YM and σ and to a significant increase in permeability ( T m and χ w were not significantly affected). The effect on the mechanical properties is in agreement with the literature . A further increase in the PBS concentration had no further significant effect on the properties.…”

Section: Discussionsupporting

confidence: 91%

Effect of different biopolymers and polymers on the mechanical and permeation properties of extruded PHBV cast films

Jost

Miesbauer

2017

J of Applied Polymer Sci

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The biopolymer poly-3-hydroxybutyrate-co-3-hydroxyvalerate (PHBV) is a promising material for packaging applications but its high brittleness is challenging. To address this issue, PHBV was blended with nine different biopolymers and polymers in order to improve the processing and mechanical properties of the films. Those biopolymers were TPS, PBAT, a blend of PBAT 1 PLA, a blend of PBAT 1 PLA 1 filler, PCL and PBS, and the polymers TPU, PVAc, and EVA. The extruded cast films were analyzed in detail (melting temperature, crystallinity, mechanical properties, permeation properties, and surface topography). A decrease in crystallinity and Young's modulus and an increase in elongation at break and permeability were observed with increasing biopolymer/ polymer concentration. In PHBV-rich blends (70 wt % PHBV), the biopolymers/polymers PCL, PBAT, and TPU increased the elongation at break while only slightly increasing the permeability. Larger increases in the permeability were found for the films with PBS, PVAc, and EVA. The films of biopolymer/polymer-rich blends (with PBAT, TPU, and EVA) had significantly different properties than pure PHBV. A strong effect on the properties was measured assuming that at certain biopolymer/polymer concentrations the coherent PHBV network is disrupted. The interpretation of the permeation values by the Maxwell-Garnett theory confirms the assumption of a phase separation.

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“…and therefore low amorphous content, of PHB-co-HV and is commonly seen with PHB and its copolymers [23,35,36].…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Control of the secondary crystallisation process in poly(hydroxybutyrate-co-hydroxyvalerate) through the incorporation of poly(ethylene glycol)

Kelly

Fitzgerald

Jenkins

2018

Polymer Degradation and Stability

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Mechanical and thermal properties of poly(butylene succinate)/poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) biodegradable blends

Cited by 32 publications

References 44 publications

Nano-Brushes of Alcohols Grafted onto Cellulose Nanocrystals for Reinforcing Poly(Butylene Succinate): Impact of Alcohol Chain Length on Interfacial Adhesion

Nano-Brushes of Alcohols Grafted onto Cellulose Nanocrystals for Reinforcing Poly(Butylene Succinate): Impact of Alcohol Chain Length on Interfacial Adhesion

Effect of different biopolymers and polymers on the mechanical and permeation properties of extruded PHBV cast films

Control of the secondary crystallisation process in poly(hydroxybutyrate-co-hydroxyvalerate) through the incorporation of poly(ethylene glycol)

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