Crystallinity and impact strength improvement of wood-polylactic acid biocomposites produced by rotational and compression molding

Pérez‐Fonseca, Aida Alejandra; Ramírez-Herrera, Verónica Olimpia; Talavera, Francisco Javier Fuentes; Rodrigue, Denis; Silva-Guzmán, José Antonio; Robledo‐Ortíz, Jorge R.

doi:10.4067/s0718-221x2021000100436

Cited by 3 publications

(3 citation statements)

References 37 publications

(60 reference statements)

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“…The analysis of the presented values has revealed that the registered storage modulus E values differ from those presented in [32,33] by about 2.5-3 times. As in the case of static measurements, this is most probably caused by the implemented infill ratio.…”

Section: Results Of Cyclic Testsmentioning

confidence: 72%

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Compression Strength of PLA Bolts Produced via FDM

et al. 2022

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The aim of this research was to define the compression strength of polylactic acid bolts produced using the fused deposition modelling method. In accomplishing this, static and cyclic compression tests for different metric thread sizes were carried out in accordance with ISO 4014. Tests were conducted on M42, M48, M56, M60, and M64 threads, while samples with three different types of pitch—one nominal and two fine threads—were prepared for each diameter. Standard ISO 604 for defining the compression modulus Ec was implemented as the test basis. Accordingly, the mean compression modulus value Ec for all measurements was 917.79 ± 184.99 MPa. Cyclic compression tests were then carried out on samples with the M64 × 4 thread. Fifty thread loading cycles were carried out for each variant to obtained different strain amplitude values and strain frequencies. Our work indicated that the values of the storage modulus defined in cyclic tests E′ increased, while the values of the loss modulus E″ decreased when the value of the strain frequency increased. We found it not possible to determine the nature of the changes in the value of the storage modulus E′ in the function of the strain amplitude. We did, however, observe an increase in the value of the loss modulus E″, together with the increase in the tested range of the strain amplitude. The determined mechanical values can be therefore be used for designing threaded connections made of polylactic acid using the fused deposition modelling method.

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Section: Results Of Cyclic Testsmentioning

confidence: 72%

“…In [32], the authors determined the storage modulus E for PLA on the basis of a three-point bending test. The test was carried out for the frequency of f = 1 Hz and for the strain amplitude of ε 0 = 0.03.…”

Section: Results Of Cyclic Testsmentioning

confidence: 99%

Compression Strength of PLA Bolts Produced via FDM

et al. 2022

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“…The crystallinity of a composite has a significant impact on the properties of the material. Pérez‐Fonseca et al 88 prepared PLA biocomposites using two different woods, white ash and tzalam, by compression and rotational molding techniques in order to improve the crystallinity and impact strength of PLA/wood particles. Annealing at 100°C for 40 min improved the crystallinity of the composites by 60% and compensated for the loss of energy storage modulus of the composites without annealing treatment.…”

Section: Pla Blend Modificationmentioning

confidence: 99%

A review of research and application of polylactic acid composites

Lin

Liu

et al. 2022

J of Applied Polymer Sci

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Polylactic acid (PLA) is a thermoplastic polyester that has received widespread attention for its environmentally friendly origin and excellent performance, and its potential to address the current problems of severe white pollution and scarcity of petroleum resources. This article focuses on the synthesis, modification, degradation and application of PLA. The main focus is on the modification of PLA with different environmentally friendly materials (natural organic materials, biodegradable polymers, inorganic minerals) in blends for defects such as the brittleness of PLA. In addition, the applications of PLA composites in the fields of construction, medical, packaging and oil and water separation are also introduced, which hopefully will provide some help to the promotion of PLA.

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Characteristics of composite materials based on polylactic acid (PLA)

Drpić

2023

Tehnika

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Polylactic acid (PLA) is aliphatic thermoplastic polyester. Composites based on PLA are biocompatible, biodegradable and non-toxic, which are the main advantages of using such composites. Based on the research results described in this paper, it was concluded that by adding natural fibers to the composite, certain characteristics can be significantly improved. This paper describes some of composite material characteristics based on PLA, modification of PLA, advantages and disadvantages of using PLA in composite materials, composition and methods of obtaining PLA-based composites, as well as the advantages of using wood plastic composites (WPC) based on PLA.

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Crystallinity and impact strength improvement of wood-polylactic acid biocomposites produced by rotational and compression molding

Cited by 3 publications

References 37 publications

Compression Strength of PLA Bolts Produced via FDM

Compression Strength of PLA Bolts Produced via FDM

A review of research and application of polylactic acid composites

Characteristics of composite materials based on polylactic acid (PLA)

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