Novel biodegradable composites based on PHBV: Effect of nanocellulose incorporation on the non‐isothermal crystallization kinetic and structural parameters

Benini, Kelly Cristina Coelho de Carvalho; Ornaghi, Heitor Luiz; Bianchi, Otávio; Magalhães, W.F.; Henriques, Fernando F.; Windmöller, Dario; Voorwald, Herman J.C.; Cioffi, Maria Odila Hilário

doi:10.1002/pc.25164

Cited by 9 publications

(9 citation statements)

References 20 publications

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“…For plasticized composites, the increase in the TEC mass fraction up to 30% each, in general, led to an increase in the L , L c , and L a from 63 Å (PFT – 100.0.0) to 89 Å (PFT – 40.30.30), from 25 Å (PFT – 100.0.0) to 32 Å (PFT – 40.30.30) and from 38 Å (PFT – 100.0.0) to 61 Å (PFT – 40.30.30), independent of the injection flow direction. Similar behavior was reported by Benini et al 49 for composites of PHBV and cellulose nanoparticles. According to these authors, the increase in the L and L c values with the increasing mass fraction of cellulose nanoparticles is due to the decrease in the energy barrier for PHBV crystallization from melting.…”

Section: Resultssupporting

confidence: 89%

Green composites of poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) and sugarcane bagasse fibers plasticized with triethyl citrate: Thermal, mechanical and morphological properties

Ferrão

Perin

Felisberti

2022

J of Applied Polymer Sci

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In this work, PHBV composites were prepared by melting extrusion using triethyl citrate (TEC) as a biodegradable plasticizer and sugarcane bagasse fibers (SBF) as reinforcement. The plasticizer TEC played a crucial role in the preparation of the formulations by extrusion, reducing the viscosity of the melt and minimizing the thermomechanical degradation of PHBV. Moreover, TEC was an efficient plasticizer for the composites, reducing the glass transition and melting temperatures of PHBV and making the specimens ductile. The increase in the concentration of TEC led to an enlargement of the interlamellar spacing and larger PHBV spherulites without changing the cell parameters. In contrast, the introduction of the SBF elevated the viscosity of the molten during extrusion, leading to thermomechanical degradation of PHBV. The SBF acted as a nucleation agent for the PHBV crystallization and oriented the growth of the PHBV crystals due to the transcrystallization, which contributed to the matrix-filler adhesion, the increase in the lamellae thickness, and changes in the thermal properties of PHBV. The SBF acted as a reinforcing agent, increasing the tensile properties of the matrix. Therefore, TEC and SBF had antagonistic effects on the properties of the formulations, opening opportunities to tune their properties by varying the composition.

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Section: Resultssupporting

confidence: 89%

Green composites of poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) and sugarcane bagasse fibers plasticized with triethyl citrate: Thermal, mechanical and morphological properties

Ferrão

Perin

Felisberti

2022

J of Applied Polymer Sci

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“…Low content of HV in PHBV leads to reduction of flexibility, elongation and impact strength, and higher content decreases its brittleness due to inhibition of secondary crystallization [3]. PHBV-based composites are becoming increasingly the object of scientific interest [4,5].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Hydrothermal Aging Behaviour of Polyhydroxybutyrate-Co-Valerate (PHBV) Composites Reinforced by Natural Fibres

Mazur

Kuciel

2019

Molecules

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Biodegradable composites based on poly (3-hydroxybutyrate-co-3-hydroxyvalerate), reinforced with 7.5% or 15% by weight of wood fibers (WF) or basalt fibers (BF) were fabricated by injection molding. BF reinforced composites showed improvement in all properties, whereas WF composites showed an increase in Young’s modulus values, but a drop in strength and impact properties. When compared with the unmodified polymer, composites with 15% by weight of BF showed an increase of 74% in Young’s modulus and 41% in impact strength. Furthermore, the experimentally measured values of Young’s modulus were compared with values obtained in various theoretical micromechanical models. The Haplin-Kardas model was found to be in near approximation to the experimental data. The morphological aspect of the biocomposites was studied using scanning electron microscopy to obtain the distribution and interfacial adhesion of the fibers. Additionally, biodegradation tests of the biocomposites were performed in saline solution at 40 °C by studying the weight loss and mechanical properties. It was observed that the presence of fibers affects the rate of water absorption and the highest rate was seen for composites with 15% by weight of WF. This is dependent on the nature of the fiber. After both the first and second weeks mechanical properties decreased slightly about 10%.

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“…Polysaccharides from natural sources have been used for various applications, such as to promote anticancer [4] and antitumor activity [5], for immunomodulatory dietary applications [6], adsorption of petroleum [7], reinforcement of composites [8][9][10][11] and production of nanoreinforcements [12,13], among others. On the other hand, ionic liquids (ILs) possess inherent characteristics, such as low cost and environmentally safe characteristics (depending their chemical configuration (cation and anion selection)), compared to conventional electrolytes; therefore, they have attracted considerable attention in the scientific field [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, ionic liquids (ILs) possess inherent characteristics, such as low cost and environmentally safe characteristics (depending their chemical configuration (cation and anion selection)), compared to conventional electrolytes; therefore, they have attracted considerable attention in the scientific field [14][15][16][17]. Polysaccharides from natural sources have been used for various applications, such as to promote anticancer [4] and antitumor activity [5], for immunomodulatory dietary applications [6], adsorption of petroleum [7], reinforcement of composites [8][9][10][11] and production of nanoreinforcements [12,13], among others. On the other hand, ionic liquids (ILs) possess inherent characteristics, such as low cost and environmentally safe characteristics (depending their chemical configuration (cation and anion selection)), compared to conventional electrolytes; therefore, they have attracted considerable attention in the scientific field [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A Systematic Review of New Trends in Ionic Liquids Applied to Electrolytes on Polysaccharides

Ornaghi¹,

Kerche

Neves

et al. 2022

Polysaccharides

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Polysaccharides are formed by a long chain of monosaccharides, with the main function of promoting energetic and structural reserves for plants and animals. They can be applied as a base of electrolytes, using ionic liquids (ILs) as a solvent base. The study of electrolytes is an emerging field, as they are applied as secondary batteries, fuel cells, solar cells, supercapacitors and chemical sensors. They operate stably under extreme conditions, maintaining their high thermal stability. Furthermore, their low cost and environmentally safe character, compared to conventional electrolytes, have attracted considerable attention in the scientific field. ILs are composed entirely of ions and could be potentially applied as solvents. As electrolytes, ILs are environmentally friendly, and their use in combination with polysaccharides leads to a synergic effect. In the present study, a systematic review was performed of all papers published from 2014 to 2022 regarding ILs and polysaccharides through a search of three databases. Due to the large number of results found, only papers about electrolytes were considered and the main findings described. This study allows for easy identification of the most relevant fields of study with respect to ILs and polysaccharides, as well as the main gaps to be explored in the literature.

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Novel biodegradable composites based on PHBV: Effect of nanocellulose incorporation on the non‐isothermal crystallization kinetic and structural parameters

Cited by 9 publications

References 20 publications

Green composites of poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) and sugarcane bagasse fibers plasticized with triethyl citrate: Thermal, mechanical and morphological properties

Green composites of poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) and sugarcane bagasse fibers plasticized with triethyl citrate: Thermal, mechanical and morphological properties

Mechanical and Hydrothermal Aging Behaviour of Polyhydroxybutyrate-Co-Valerate (PHBV) Composites Reinforced by Natural Fibres

A Systematic Review of New Trends in Ionic Liquids Applied to Electrolytes on Polysaccharides

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