Development of sustainable biodegradable lignocellulosic hemp fiber/polycaprolactone biocomposites for light weight applications

Dhakal, Hom Nath; Ismail, Sikiru Oluwarotimi; Zhang, Zhongyi; Barber, Asa H.; Welsh, Euan; Maigret, Jean-Eudes; Beaugrand, Johnny

doi:10.1016/j.compositesa.2018.08.005

Cited by 68 publications

(24 citation statements)

References 37 publications

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“…However, mechanical properties presented a significant decrease in water immersed biocomposites; flexural moduli and tensile reduced by 62% and 90%, respectively. The results provided a green replacement of a petroleum-based and conventional polymer matrix in potential applications [148]. In addition, the adhesion between fibers and polymers and the dispersion of fiber in matrix are also vital to an effective stress transfer.…”

Section: Application Of Lignocellulosic Fibers In Bioplasticsmentioning

confidence: 99%

Applications of Lignocellulosic Fibers and Lignin in Bioplastics: A Review

2019

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Lignocellulosic fibers and lignin are two of the most important natural bioresources in the world. They show tremendous potential to decrease energy utilization/pollution and improve biodegradability by replacing synthetic fibers in bioplastics. The compatibility between the fiber-matrix plays an important part in the properties of the bioplastics. The improvement of lignocellulosic fiber properties by most surface treatments generally removes lignin. Due to the environmental pollution and high cost of cellulose modification, focus has been directed toward the use of lignocellulosic fibers in bioplastics. In addition, lignin-reinforced bioplastics are fabricated with varying success. These applications confirm there is no need to remove lignin from lignocellulosic fibers when preparing the bioplastics from a technical point of view. In this review, characterizations of lignocellulosic fibers and lignin related to their applications in bioplastics are covered. Then, we generalize the developments and problems of lignin-reinforced bioplastics and modification of lignin to improve the interaction of lignin-matrix. As for lignocellulosic fiber-reinforced bioplastics, we place importance on the low compatibility of the lignocellulosic fiber–matrix. The applications of lignin-containing cellulose and lignocellulosic fibers without delignification in the bioplastics are reviewed. A comparison between lignocellulosic fibers and lignin in the bioplastics is given.

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Section: Application Of Lignocellulosic Fibers In Bioplasticsmentioning

confidence: 99%

Applications of Lignocellulosic Fibers and Lignin in Bioplastics: A Review

2019

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“…However, there are some limitations of the PBS which hinder the practical application of this polymer, such as high cost, low gas barrier properties, and softness [ 10 ]. To decrease the high cost of PBS and enhance its properties, PBS is normally reinforced with natural Fibers Natural fibers are used as reinforcing fillers due to their advantages such as low density and low cost, as well as being environmentally friendly and biodegradable [ 3 , 11 , 12 , 13 , 14 , 15 ]. Natural fibers are defined as those fibers which are not synthesized but produced from sources such as plants and animals [ 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

A Review on Green Composites Based on Natural Fiber-Reinforced Polybutylene Succinate (PBS)

et al. 2021

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The need for utilization of environmentally friendly materials has emerged due to environmental pollution that is caused by non-biodegradable materials. The usage of non-biodegradable plastics has increased in the past decades in many industries, and, as a result, the generation of non-biodegradable plastic wastes has also increased. To solve the problem of non-biodegradable plastic wastes, there is need for fabrication of bio-based polymers to replace petroleum-based polymers and provide strategic plans to reduce the production cost of bioplastics. One of the emerging bioplastics in the market is poly (butylene succinate) (PBS) and it has been the biopolymer of choice due to its biodegradability and environmental friendliness. However, there are some disadvantages associated with PBS such as high cost, low gas barrier properties, and softness. To lower the cost of PBS and enhance its properties, natural lignocellulosic fibers are incorporated into the PBS matrix, to form environmentally friendly composites. Natural fiber-based biocomposites have emerged as materials of interest in important industries such as packaging, automobile, and construction. The bonding between the PBS and natural fibers is weak, which is a major problem for advanced applications of this system. As a result, this review paper discusses various methods that are employed for surface modification of the Fibers The paper provides an in-depth discussion on the preparation, modification, and morphology of the natural fiber-reinforced polybutylene succinate biocomposites. Furthermore, because the preparation as well as the modification of the fiber-reinforced biocomposites have an influence on the mechanical properties of the biocomposites, mechanical properties of the biocomposites are also discussed. The applications of the natural fiber/PBS biocomposites for different systems are also reported.

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“…Several studies have investigated the use of natural fibers to reinforce PCL, in addition to lowering its cost. Composites have been prepared by melt compounding [16][17][18][24][25][26] as well as solvent casting [27,28]. Ludueña et al [17] examined the addition of different types and amounts of lignocellulosic fillers (cotton (CO), cellulose (CE), and hydrolyzed-cellulose (HCE), at 5 and 15 wt.%) to prepare PCL composite films for packaging applications.…”

Section: Introductionmentioning

confidence: 99%

Solid-State Compounding for Recycling of Sawdust Waste into Green Packaging Composites

Allaf

Futian

2020

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The present study explores solid-state cryomilling for the compounding of green composites. Herein, wood plastic composites (WPCs) composed of sawdust (SD) and poly(ε-caprolactone) (PCL) with various compositions were prepared. Two compounding techniques, namely, extrusion and cryomilling, were utilized to prepare WPC raw material pellets and powders, respectively, for comparison purposes. Flat pressing was further utilized to prepare WPC films for testing. Morphological, structural, thermal, mechanical, and surface wettability properties were investigated. Results indicate the advantages of cryomilling in producing WPCs. Scanning electron microscopy (SEM) along with optical micrographs revealed well ground SD particles and uniform distribution in the PCL matrix. Tensile strength and elongation at break of the composites declined with increasing SD content, however, the modulus of elasticity significantly increased. Water contact angles averaged less than 90°, implying partial wetting. Visual observations and thermo-gravimetric analysis (TGA) indicated thermal stability of composites during processing. In conclusion, PCL/SD WPC is a potential candidate to replace conventional plastics for packaging applications. This would also provide a much better utilization of the currently undervalued wood waste resources.

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Development of sustainable biodegradable lignocellulosic hemp fiber/polycaprolactone biocomposites for light weight applications

Cited by 68 publications

References 37 publications

Applications of Lignocellulosic Fibers and Lignin in Bioplastics: A Review

Applications of Lignocellulosic Fibers and Lignin in Bioplastics: A Review

A Review on Green Composites Based on Natural Fiber-Reinforced Polybutylene Succinate (PBS)

Solid-State Compounding for Recycling of Sawdust Waste into Green Packaging Composites

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