New type of thermoplastic bio composite: nature of the interface on the ultimate properties and water absorption

Sari, P. S.; Špatenka, Petr; Jenikova, Zdenka; Grohens, Yves; Thomas, Sabu

doi:10.1039/c5ra16311k

Cited by 19 publications

(4 citation statements)

References 37 publications

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“…Figure 5 demonstrated that the raw biocomposites are showing exceeding results among the optimized experimental group. Because of low interfacial adhesion, micro air-filled void space and pores appear in the composite, which uptake the water inside those micro-voids, and pores take part in changing dimensional stability of composites [46], as exhibited in Figure 5. Interestingly, as we expected, the lowest TS result is showing the combined treated bio-composites compared to raw biocomposites, which is 5.1 mm lower after 180 h of immersion, due to reducing the hydroxyl (OH) group of fibers that is responsible for water uptake after chemical treatments.…”

Section: Thickness Swelling (Ts)mentioning

confidence: 99%

Preparation and evaluation mechanical, chemical and thermal properties of hybrid jute and coir fibers reinforced bio-composites using poly-lactic acid and poly-caprolactone blends

Hossen

Feng

Yin

et al. 2020

Mater. Res. Express

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Green composites using thermoplastics and thermosets got immense popularity long back when it newly introduced to the industry due to diminishing reliance on oil-based or gasoline materials, which causes numerous environmental problems. In this paper, bio-composites mechanical, chemical, thermal, and degradation properties of hybrid jute and coir fibers reinforced polylactic acid (PLA) investigated. Throughout the fabrication procedure of biocomposites, jute, and coir fibers characterized into three different categories raw, alkali-peroxide, and alkali-silane combined chemical treatments followed a design containing in a total of ten optimized samples. Jute and coir fibers were mixed with a solution of polycaprolactone (PCL) for better fiber-matrix adhesion prior to fabrication. The mechanical properties of alkali-silane treated reinforced fibers biocomposites improved compared to untreated fibers, which exhibited for fiber contents 40% an increase of respectively 32.8% by tensile strength 25.95% by tensile modulus, 24.58% by flexural strength, 23.64% by flexural modulus, and 26.08% by impact strength. Besides, moisture absorption, thickness swelling, thermal stability (TG), and surface chemistry analysis (FTIR) properties investigated, according to fiber-matrix contents ratio, hot-pressing time, temperature, and pressure to identify the effect of biocomposites due to chemical treatments. Moreover, the fiber surface effect of chemical treatments and interfacial adhesion morphologies observed using SEM. Eventually, alkali-silane combined optimized samples demonstrated the most desirable result in every aspect. In addition, a 90 days burial degradation performed to see the degradation flow of the biocomposites.

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Section: Thickness Swelling (Ts)mentioning

confidence: 99%

Preparation and evaluation mechanical, chemical and thermal properties of hybrid jute and coir fibers reinforced bio-composites using poly-lactic acid and poly-caprolactone blends

Hossen

Feng

Yin

et al. 2020

Mater. Res. Express

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“…In other words, a greater number of polar groups on the surface of the LDPE leads to a greater number of sites for interaction, thereby causing an improvement in the overall properties. In the case of hybrid compatibilizer, the number of sites for the interaction is reduced because of the additional possibility of interaction between maleic anhydride and PLDPE [25,26] as represented in schematic 1, which causes a reduction in the number of interaction sites with the natural fiber.…”

Section: Effect Of Plasma Modifications and Its Hybrid Effectmentioning

confidence: 99%

Eco-friendly foam biocomposites based on cellulose extracted from date palm leaves and low-density polyethylene

Maria¹,

Luyt²,

Popelka³

et al. 2020

Funct. Compos. Struct.

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The design of composite materials using environmentally compatible materials and adopting sustainable preparation techniques are highly required for a better environment. The present study is a step towards developing an environment friendly alternative to foam-based composites. The aim of the study is to know the effect of natural fibers from date palm on the property of foam biocomposites. We adopted an env ronment friendly method of compatibilization between the polymer and the fibers for tter reinforcement. The compatibility was done by environment-friendly physical modification using plasma treatment. Plasma treatment provides surface modification a d this is an economical solution for further processing. In fact three types of interfaces have been created: 1) by the addition of maleic anhydride, 2) use of plasma trea LDPE, 3) the combination of maleic anhydride and plasma. The overall perform nce was the best by the use of plasma treatment alone. The effect was carefully nalyzed based on the morphological, mechanical and thermal studies. Finally, morphology-property correlation was established

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“…At present, many efforts have been made to modify fiber surfaces, aiming to improve the interfacial interaction between the fibers and the rubber matrix. Examples include plasma treatment, electron beam, gamma irradiation, UV initiated grafting, chemical grafting and coating methods [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. However, physical treatment methods, such as plasma treatment and γ-ray irradiation, not only require strict equipment and processing conditions, but also have a high cost.…”

Section: Introductionmentioning

confidence: 99%

Effect of Micromolecules and Macromolecules on the Environmentally Friendly Impregnation Solution for High-Performance Rubber Composites Compared with Traditional RFL Impregnation

Zhihao

et al. 2023

Coatings

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In this paper, a novel resorcinol-formaldehyde-free and environmentally friendly adhesives for polyester (PET) fiber impregnation treatment were compounded successfully. First, a network structure was formed by reacting micromolecular and water-soluble glycerol triglycidyl ether (GLTE) and triethylenetetramine (TETA). Then, this was mixed with latex in order to prepare an impregnation solution glycerol triglycidyl ether-triethylenetetramine-butyropyridine latex system (GTL), which can replace the toxic components (resorcinol and formaldehyde) of the resorcinol-formaldehyde-latex (RFL) impregnation system. Similarly, the macromolecular epoxy resin E-51-triethylenetetramine-butyropyridine latex system (ETL) and the traditional RFL impregnation system were also prepared in order to compare with the GTL. Further, the reaction conditions of the impregnation system, the surface chemical composition and interfacial properties were characterized by differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR) and peeling strength, respectively. The results showed that the peeling adhesion performance between the GTL-modified PET fabric and the rubber (38.5% higher than that of the ETL impregnation solution) was comparable to that of the RFL impregnation system because of micromolecular and more active GLTE. This study provides new insights into the interface design of PET/rubber composites and will facilitate the development of PET/rubber composites.

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New type of thermoplastic bio composite: nature of the interface on the ultimate properties and water absorption

Abstract: A new type of thermoplastic bio composite with coir fibre derived from coconut was fabricated by means of plasma modification of the polymer surface.

Cited by 19 publications

References 37 publications

Preparation and evaluation mechanical, chemical and thermal properties of hybrid jute and coir fibers reinforced bio-composites using poly-lactic acid and poly-caprolactone blends

Preparation and evaluation mechanical, chemical and thermal properties of hybrid jute and coir fibers reinforced bio-composites using poly-lactic acid and poly-caprolactone blends

Eco-friendly foam biocomposites based on cellulose extracted from date palm leaves and low-density polyethylene

Effect of Micromolecules and Macromolecules on the Environmentally Friendly Impregnation Solution for High-Performance Rubber Composites Compared with Traditional RFL Impregnation

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