Morphology and property changes in PLA/PHBV blends as function of blend composition

Kanda, G. S.; Al-Qaradawi, I.Y.; Luyt, A. S.

doi:10.1007/s10965-018-1586-3

Cited by 23 publications

(20 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[32] Kanda et al studied morphology and properties of PLA/PHBV blends (from 10 wt% up to 100% of PHBV). [33] They observed that the 10 wt% of PHBV addition improved Young's modulus from ≈1.5 to ≈2 GPa. However, with the larger increase of the PHBV content, the Young's modulus decreases.…”

Section: Tensile and Bending Propertiesmentioning

confidence: 98%

The Effect of Antibacterial Particle Incorporation on the Mechanical Properties, Biodegradability, and Biocompatibility of PLA and PHBV Composites

Mazur

Singh

Friedrich

et al. 2020

Macro Materials & Eng

View full text Add to dashboard Cite

The composites based on polylactide (PLA) and poly (3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV) with the addition of antibacterial particles: silver (Ag) and copper oxide (CuO) are characterized. Basic mechanical properties and biodegradation processes, as well as biocompatibility of materials with human cells are determined. The addition of Ag or CuO to the polymers do not significantly affect their mechanical properties, flammability, or biodegradation rate. However, several differences between the base materials are observed. PLA‐based composites have higher tensile and impact strength values, while PHBV‐based ones have a higher modulus of elasticity, as well as better mechanical properties at elevated temperatures. Concerning biocompatibility, each of the tested materials support the growth of fibroblasts over time, although large differences are observed in the initial cell attachment. The analysis of hydrolytic degradation effects on the structure of materials shows that PHBV degrades much faster than PLA. The results of this study confirm the good potential of the investigated biodegradable polymer composites with antibacterial particles for future biomedical applications.

show abstract

Section: Tensile and Bending Propertiesmentioning

confidence: 98%

The Effect of Antibacterial Particle Incorporation on the Mechanical Properties, Biodegradability, and Biocompatibility of PLA and PHBV Composites

Mazur

Singh

Friedrich

et al. 2020

Macro Materials & Eng

View full text Add to dashboard Cite

show abstract

“…With the PHB content below 50 wt%, PLA was found to be miscible with low molecular weight PHB in the melt. As for the well‐studied PLA/PHBV blend, several reports 35,36 have also demonstrated that PLA and PHBV showed partial miscibility in the blend with a low concentration of PHBV (not exceed 30 wt%), especially for the blend with small molecular weight PHBV. Considering the structure of the PHAs used in present work, we surmised that the content of PHB in the chain structure of PHAs played a non‐negligible impact on the compatibility of the blends.…”

Section: Resultsmentioning

confidence: 92%

“…There are only a few reports on the PLA and P 34 HB blend, in which the used P 34 HB component contains a high 3HB ratio above 70%. In a series of reports, Dong et al [32][33][34][35] found that the P 34 HB with high 3HB ratio showed very limited compatibility with PLA, forming a separated phase structure of the binary blend. Recently, we found that although P 34 HB with a low 4HB ratio was immiscible with PLA, the P 34 HB and PLA phases had a degree of compatibility in their binary blend.…”

Section: Ftir Analysismentioning

confidence: 99%

See 1 more Smart Citation

Sustainable and high‐performance ternary blends from polylactide, CO₂‐based polyester and microbial polyesters with different chemical structure

Zuo

Liu

Dong

et al. 2021

Journal of Polymer Science

View full text Add to dashboard Cite

Herein, high-performance sustainable ternary blends were prepared via a melt blending method from completely biodegradable polyesters, namely commercial polylactide (PLA), poly(propylene carbonate) (PPC) and a series of poly(hydroxyalkanoate)s (PHAs), including poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), poly(3-hydoxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) and two types of poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P 34 HB) having different 3HB molar ratios. The miscibility, phase structure, mechanical and thermal properties of the blends were investigated to deeply understand the influence of the blend compositions and species of PHAs on the structure and physical performance of the multiphase blends. Thermal and morphological analysis revealed that the PLA, PPC and PHAs components showed partial miscibility with each other, especially the blend with P 34 HB of a low 3HB ratio. Remarkable enhancement in the ductility and toughness of PLA was gained by the addition of PPC and P 34 HB. An optimum tensile strain of 171% was achieved for the PLA/PPC/P 34 HB (60/30/10) blend, while PLA/PPC/P 34 HB (60/10/30) blend showed the highest impact strength with a value of 45 kJ m À2 , which is 14 times higher than that of PLA. Synergistic toughening from the flexible PPC and P 34 HB phase with a degree of interfacial compatibilization played an effective role in enhancing the mechanical performance of the ternary blends.

show abstract

“…Unfortunately, beside the effectiveness of this approach the addition of non-degradable petroleum-based cannot be consider as sustainable solution, which is the reason for development of new methods involving blending PLA with other elastomeric or soft biopolymers. So far, the different research studies confirmed the effectiveness of different types of biopolymers, like polycaprolactone—PCL [ 39 , 40 , 41 , 42 , 43 ], polyhydroxybutyrate—PHB [ 44 , 45 , 46 , 47 , 48 ], thermoplastic starch-TPS [ 49 , 50 , 51 ], poly(-3-hydroxybutyrate-co-3-hydroxyvalerate)—PHBV [ 52 , 53 , 54 , 55 , 56 ]. However, the most likely used biopolymer was PBAT, probably because of its popularity in foil production industry [ 2 , 57 , 58 , 59 ].…”

Section: Introductionmentioning

confidence: 99%

Development of Toughened Flax Fiber Reinforced Composites. Modification of Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends by Reactive Extrusion Process

Andrzejewski

Nowakowski

2021

Materials

View full text Add to dashboard Cite

The presented study focuses on the development of flax fiber (FF) reinforced composites prepared with the use of poly(lactic acid)/poly(butylene adipate-co-terephthalate)—PLA/PBAT blend system. This type of modification was aimed to increase impact properties of PLA-based composites, which are usually characterized by high brittleness. The PLA/PBAT blends preparation was carried out using melt blending technique, while part of the samples was prepared by reactive extrusion process with the addition of chain extender (CE) in the form of epoxy-functionalized oligomer. The properties of unreinforced blends was evaluated using injection molded samples. The composite samples were prepared by compression molding technique, while flax fibers reinforcement was in the form of plain fabric. The properties of the laminated sheets were investigated during mechanical test measurements (tensile, flexural, impact). Differential scanning calorimetry (DSC) analysis was used to determine the thermal properties, while dynamic mechanical thermal analysis (DMTA) and heat deflection temperature (HDT) measurements were conducted in order to measure the thermomechanical properties. Research procedure was supplemented with structure evaluation using scanning electron microscopy (SEM) analysis. The comparative study reveals that the properties of PLA/PBAT-based composites were more favorable, especially in the context of impact resistance improvement. However, for CE modified samples also the modulus and strength was improved. Structural observations after the impact tests confirmed the presence of the plastic deformation of PLA/PBAT matrix, which confirmed the favorable properties of the developed materials. The use of PBAT phase as the impact modifier strongly reduced the PLA brittleness, while the reactive extrusion process improves the fiber-matrix interactions leading to higher stiffness and strength.

show abstract

Morphology and property changes in PLA/PHBV blends as function of blend composition

Cited by 23 publications

References 46 publications

The Effect of Antibacterial Particle Incorporation on the Mechanical Properties, Biodegradability, and Biocompatibility of PLA and PHBV Composites

The Effect of Antibacterial Particle Incorporation on the Mechanical Properties, Biodegradability, and Biocompatibility of PLA and PHBV Composites

Sustainable and high‐performance ternary blends from polylactide, CO₂‐based polyester and microbial polyesters with different chemical structure

Development of Toughened Flax Fiber Reinforced Composites. Modification of Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends by Reactive Extrusion Process

Contact Info

Product

Resources

About

Morphology and property changes in PLA/PHBV blends as function of blend composition

Cited by 23 publications

References 46 publications

The Effect of Antibacterial Particle Incorporation on the Mechanical Properties, Biodegradability, and Biocompatibility of PLA and PHBV Composites

The Effect of Antibacterial Particle Incorporation on the Mechanical Properties, Biodegradability, and Biocompatibility of PLA and PHBV Composites

Sustainable and high‐performance ternary blends from polylactide, CO2‐based polyester and microbial polyesters with different chemical structure

Development of Toughened Flax Fiber Reinforced Composites. Modification of Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends by Reactive Extrusion Process

Contact Info

Product

Resources

About

Sustainable and high‐performance ternary blends from polylactide, CO₂‐based polyester and microbial polyesters with different chemical structure