Influence of fiber modifications on PLA/fiber composites. Behavior to accelerated weathering

Spiridon, Iuliana; Darie, Raluca Nicoleta; Kangas, Heli

doi:10.1016/j.compositesb.2016.02.032

Cited by 87 publications

(56 citation statements)

References 24 publications

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“…The mechanical properties were comparable to pure polylactic acid and PLA reinforced by natural fibers. The adhesion between the treated fibers and PLAr improved due to enzymatic modification as also reported by Spiridon et al (2016). It also proved that enzymatic treatment was specific and rapid as compared to chemical modification.…”

Section: Mechanical Propertiessupporting

confidence: 75%

Green synthesis of novel biocomposites from treated cellulosic fibers and recycled bio-plastic polylactic acid

Laadila

Hegde

Rouissi

et al. 2017

Journal of Cleaner Production

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This study investigated mechanical properties of biocomposites developed from recycled polylactic acid (PLA) from packaging industry and treated cellulosic fibers from pulp and paper solid waste. Microwave and enzymatic treatments were used for extraction and surface modification of hydrophilic cellulosic fibers. Enzymatic treatment was specifically performed for activation of hydroxyl groups and improvement of adhesion between matrix and fibers including controlling the length of cellulosic fibers with size reduction of around 50% (142 and 127 mm for primary and mixed biosolids, respectively) as compared to microwave treatment. Microwave treatment produced cellulosic fibers of 293 and 341 mm, for primary and mixed biosolids, respectively. Mechanical properties of biocomposites with 2% (w/w) of treated cellulosic fibers (Young's Modulus 887.83 MPa with tensile strain at breakpoint of 7.22%, tensile stress at yield 41.35 MPa) was enhanced in comparison to the recycled PLA (Young's Modulus 644.47 ± 30.086 MPa with tensile strain at breakpoint of 6.01 ± 0.83%, tensile stress at yield of 29.49 ± 3.64 MPa). Scanning electron microscopy revealed size reduction of cellulosic fibers. X-ray diffraction and Fourier transform infrared spectroscopy confirmed strong mechanical properties of novel biocomposites.

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Section: Mechanical Propertiessupporting

confidence: 75%

Green synthesis of novel biocomposites from treated cellulosic fibers and recycled bio-plastic polylactic acid

Laadila

Hegde

Rouissi

et al. 2017

Journal of Cleaner Production

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“…Similar results were found by Pérez‐Fonseca et al . According to other authors, NFs decrease the PLA chain mobility producing a consequently T g increase for the biocomposites compounded by melt‐blending . The T g and T m values of the molded samples were very similar to neat PLA (presented in Figure b).…”

Section: Resultsmentioning

confidence: 99%

Polylactic acid–agave fiber biocomposites produced by rotational molding: A comparative study with compression molding

Cisneros-López¹,

Pérez‐Fonseca²,

González‐García³

et al. 2017

Adv Polym Technol

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In this work, the possibility to produce polylactic acid (PLA) and agave fiber biocomposites by dry-blending and rotational molding was studied. The samples were also produced by compression molding to compare the effect of processing conditions on the biocomposites properties. In particular, the effect of fiber content (0-40 wt.%) on morphology, density, porosity, thermal (DSC) and mechanical properties (tension, flexion, impact and hardness) was studied. Also, a complete analysis of the internal air temperature profiles was performed to determine the thermal behavior of PLA during the rotational molding cycle. The results showed that rotomolded biocomposites were successfully produced but had higher porosity than compression molded ones due to the absence of pressure while forming. This led to different level of mechanical properties reduction as fiber content increases. Nevertheless, for compression-molded biocomposites, crystallinity (30% at 30 wt.%), tensile modulus (14% at 30 wt.%) and impact strength (71% at 40 wt.%) improvements were obtained compared to neat PLA. K E Y W O R D Sbiodegradable, composites, molding, natural fibers, polylactic acid | 2529 CISNEROS-LÓPEZ Et aL.

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“…adhesion between the fibres and matrix and/or improved interfacial bonds caused by improved hydrophobicity in biocomposites fabricated with alkali-treated fibres [43]. The calculated weight loss values were highest for the untreated C7P3 among the hybrid biocomposites, containing 70% untreated CF and 30% untreated PALF, owing to the high content of CF which is a lignin-rich natural fibre.…”

Section: Accelerated Weathering: Weight Changementioning

confidence: 99%

Accelerated Weathering and Soil Burial Effect on Biodegradability, Colour and Textureof Coir/Pineapple Leaf Fibres/PLA Biocomposites

et al. 2020

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Accelerated weathering and soil burial tests on biocomposites of various ratios of coir (CF)/pineapple leaf fibres (PALF) with polylactic acid (PLA) were conducted to study the biodegradability, colour, and texture properties as compared with PLA.The biodegradability of a lignocellulosic composite largely depends on its polymer matrix, and the rate of biodegradation depends on many environmental factors such as moisture, light(radiation), temperature and microbes. Biodegradation was evaluated by soil burial and accelerated weathering tests. Changes in physical and morphological properties were observed in the biocomposites after weathering. These results allowed us to conclude that untreated CF/PALF/PLA biocomposites would be a more favourable choice owing to their better biodegradability and are suitable for the suggested biodegradable food packaging applications.

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Influence of fiber modifications on PLA/fiber composites. Behavior to accelerated weathering

Cited by 87 publications

References 24 publications

Green synthesis of novel biocomposites from treated cellulosic fibers and recycled bio-plastic polylactic acid

Green synthesis of novel biocomposites from treated cellulosic fibers and recycled bio-plastic polylactic acid

Polylactic acid–agave fiber biocomposites produced by rotational molding: A comparative study with compression molding

Accelerated Weathering and Soil Burial Effect on Biodegradability, Colour and Textureof Coir/Pineapple Leaf Fibres/PLA Biocomposites

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