A Combined Computational and Experimental Study on the Polymerization of ε-Caprolactone

Rosa, Raphael Vicente; Ferreira, Filipe V.; Saravia, Ana Paola K.; Rocco, Silvana A.; Sforça, Maurício L.; Gouveia, Rubia F.; Lona, Liliane Maria Ferrareso

doi:10.1021/acs.iecr.8b03288

Cited by 21 publications

(13 citation statements)

References 48 publications

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“…However, increased durability of these materials has raised strong concerns about the large accumulation of plastic waste in the environment [12]. Thus, the development of cleaner processes associated with the interest in environmentally friendly materials has been the focus of research around the world [13][14][15][16][17]. In this context, the addition of natural fillers (natural fibers, cellulose nanocrystals, and nanofibrillated cellulose) in the polymers has been a way to prepare ecofriendly composites with improved properties, minimizing the problem in relation to the residue accumulation [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Polymer Composites Reinforced with Natural Fibers and Nanocellulose in the Automotive Industry: A Short Review

Ferreira

Pinheiro

Souza³

et al. 2019

J. Compos. Sci.

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155

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Environmental concerns and cost reduction have encouraged the use of natural fillers as reinforcement in polymer composites. Currently, a wide variety of reinforcement, such as natural fibers and nanocellulose, are used for this purpose. Composite materials with natural fillers have not only met the environmental appeal, but also contribute to developing low-density materials with improved properties. The production of natural fillers is unlimited around the world, and many species are still to be discovered. Their processing is considered beneficial since the natural fillers do not cause corrosion or great wear of the equipment. For these reasons, polymer reinforced with natural fillers has been considered a good alternative for obtaining ecofriendly materials for several applications, including the automotive industry. This review explores the use of natural fillers (natural fibers, cellulose nanocrystals, and nanofibrillated cellulose) as reinforcement in polymer composites for the automotive industry.

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Section: Introductionmentioning

confidence: 99%

Polymer Composites Reinforced with Natural Fibers and Nanocellulose in the Automotive Industry: A Short Review

Ferreira

Pinheiro

Souza³

et al. 2019

J. Compos. Sci.

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155

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“…Finally, blends of TPS with equally biodegradable but more stable polymers have been formed [ 18 ]. Prominent among these is polycaprolactone (PCL), due both to its biodegradation capacity and its good compatibility with a vast number of polymers, PCL is a synthetic aliphatic polyester that is synthesized from a ring-opening polymerization (ROP) with ε-caprolactone as the base monomer by heating or using catalysts [ 19 , 20 ]. PCL is a partially crystalline polymer with a moderate melting temperature of 60 °C.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Incorporation of Polycaprolactone (PCL) on the Retrogradation of Binary Blends with Cassava Thermoplastic Starch (TPS)

Mina

2020

Polymers

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The effects of incorporating polycaprolactone (PCL) in three binary blends with cassava thermoplastic starch (TPS) at TPS/PCL ratios of 60/40, 50/50, and 40/60 were studied. TPS previously obtained by single-screw extrusion was manually mixed with PCL and then transformed by extrusion. The results’ analysis focused mainly on monitoring the retrogradation phenomenon in TPS for different storage times at two relative humidities (29% and 54%) and constant temperature (25 °C). With the plasticization of the starch, a predominantly amorphous mass was generated, as evidenced by the scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) results. The results suggested that two opposite processes coexisted simultaneously: retrogradation, which stiffened the material, and plasticization, which softened it, with the latter mechanism predominating at short times and reversing at longer times. With the incorporation of PCL, immiscible blends were obtained in which TPS was the dispersed phase; the mechanical properties improved with the amount of PCL added. The properties of the binary blends as a function of time showed a trend similar to that observed for TPS alone; this finding indicated that the TPS/PCL interactions were not strong enough to affect the structural changes in the TPS, which continued to occur regardless of the PCL content. Finally, it was found that for the binary blend, the relative humidity during storage was more significant to the retrogradation phenomenon than the amount of PCL.

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“…This scenario has given rise to one of the main current environmental problems . The replacement of non‐biodegradable polymers with biodegradable ones has been an eco‐friendly alternative to minimize the long term accumulation of polymers in the environment . Among biodegradable polymers, poly(butylene adipate‐co‐terephthalate) (PBAT) has drawn significant attention from scientists due to its biodegradability, biocompatibility, high flexibility, and easy processing .…”

Section: Introductionmentioning

confidence: 99%

Environmentally friendly polymer composites based on PBAT reinforced with natural fibers from the amazon forest

et al. 2019

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Biodegradable composites based on poly(butylene adipate‐co‐terephthalate) (PBAT) and three different natural fibers (Croton lanjouwensis—Fiber C, Malvastrum tomentosum—Fiber M, and Trema micrantha—Fiber T) from the Amazon forest have been reported for the first time. Natural fibers were extracted through mechanical processing and the composites were prepared by melt mixing procedure. All composites showed greater modulus of elasticity than neat polymer and this improvement varies according to the type of fiber used as reinforcement. Addition of Fiber C increased 48% the modulus of elasticity of the polymer, while the addition of the Fibers M and T increased 70 and 72% the modulus of elasticity of the PBAT, respectively. The results reported in the present work support the idea that the above‐mentioned natural fibers can be used as filler material to obtain environmentally friendly polymer composites with improved properties. POLYM. COMPOS., 40:3351–3360, 2019. © 2019 Society of Plastics Engineers

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A Combined Computational and Experimental Study on the Polymerization of ε-Caprolactone

Cited by 21 publications

References 48 publications

Polymer Composites Reinforced with Natural Fibers and Nanocellulose in the Automotive Industry: A Short Review

Polymer Composites Reinforced with Natural Fibers and Nanocellulose in the Automotive Industry: A Short Review

Effect of the Incorporation of Polycaprolactone (PCL) on the Retrogradation of Binary Blends with Cassava Thermoplastic Starch (TPS)

Environmentally friendly polymer composites based on PBAT reinforced with natural fibers from the amazon forest

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