Preparation and Evaluation of Thermal Properties of Composites Based on Polypropylene Reinforced with Garlic Husk Particles (GHP)

Villalobos-Neri, Elda Elizabeth; Pérez, Luis Alejandro Macclesh del Pino; Velasco-Ocejo, Hugo Alberto; Rivera‐Armenta, José Luis; Espindola-Flores, Ana Cecilia

doi:10.1080/15440478.2022.2145409

Cited by 2 publications

(4 citation statements)

References 40 publications

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“…The DTG peak represents the medium decomposition temperature and helps to identify how quickly a material decomposes. Figure 5 depicts the weight loss derivative (DTG) curve of TGA thermogram, and it is possible to identify the three decomposition peaks, similar to those previously described, the first between 50 and 100 °C, which is due the dehydration of films, and the second peak between 160 and 250 °C, which indicates the decomposition of polysaccharides present in starch and GH [ 34 , 47 ]. It is evident that this peak is lower for starch and it increases when GH is added; this can be associated with the composition of GH which includes pectin, hemicellulose, and other polysaccharides, as previously reported [ 34 ].…”

Section: Resultsmentioning

confidence: 82%

“…Figure 5 depicts the weight loss derivative (DTG) curve of TGA thermogram, and it is possible to identify the three decomposition peaks, similar to those previously described, the first between 50 and 100 °C, which is due the dehydration of films, and the second peak between 160 and 250 °C, which indicates the decomposition of polysaccharides present in starch and GH [ 34 , 47 ]. It is evident that this peak is lower for starch and it increases when GH is added; this can be associated with the composition of GH which includes pectin, hemicellulose, and other polysaccharides, as previously reported [ 34 ]. The third peak (310 °C) is associated with the decomposition and depolymerization of cellulose, with lignin being present in GH and other organic components being present in starch.…”

Section: Resultsmentioning

confidence: 82%

“…Although there are no reports on the use of GH as reinforcement in starch, there is a work that reports the use of GH as reinforcement in polypropylene (PP); in this study, they found an increase in the storage modulus by including GH in a PP matrix, even at high reinforcement percentages at sub-ambient temperature [ 34 ] or in biopolymers as the chitosan, where the results showed good compatibility. These results were attributed to the presence of phenolic compounds in the GH, with OH groups forming a hydrogen bond with the pure chitosan [ 35 ].…”

Section: Resultsmentioning

confidence: 96%

“…There are various investigations of materials reinforced with natural materials that evaluate their characteristics and potential as alternatives to the use of synthetic materials. A few publications refer to GH used as filler for a polymeric matrix, such as polypropylene [ 34 ] or chitosan [ 35 ]. The use of GH could provide an advantage due to its chemical composition, in which some phenolic compounds, mainly acids, were recognized, i.e., caffeic, hydroxybenzoic, ferulic, p-coumaric, and chlorogenic acids [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Starch–Garlic Husk Polymeric Composites through Mechanical, Thermal, and Thermo-Mechanical Tests

Flores-Hernández,

López-Barroso,

Salazar-Cruz

et al. 2024

Polymers

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The present work evaluates the influence of different properties of composite materials from natural sources. Films were prepared using the evaporative casting technique from corn starch reinforced with a waste material such as garlic husk (GH), using glycerin as a plasticizer. The results of the syntheses carried out demonstrated the synergy between these materials. In the morphological analysis, the compatibility and adequate dispersion of the reinforcer in the matrix were confirmed. Using Fourier transform infrared spectroscopy (FTIR), the interaction and formation of bonds between the matrix and the reinforcer were confirmed by the presence of some signals such as S-S and C-S. Similarly, thermogravimetric analysis (TGA) revealed that even at low concentrations, GH can slightly increase the decomposition temperature. Finally, from the results of dynamic mechanical analysis (DMA), it was possible to identify that the storage modulus increases significantly, up to 115%, compared to pure starch, especially at low concentrations of the reinforcer.

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Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Evaluation of Starch–Garlic Husk Polymeric Composites through Mechanical, Thermal, and Thermo-Mechanical Tests

Flores-Hernández,

López-Barroso,

Salazar-Cruz

et al. 2024

Polymers

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Development of a Composite Filament Based on Polypropylene and Garlic Husk Particles for 3D Printing Applications

Flores-Hernández,

López-Barroso,

Ramos-Galván

et al. 2024

Applied Sciences

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Lignocellulosic waste materials are among the most abundant raw materials on Earth, and they have been widely studied as natural additives in materials, especially for polymer composites, with interesting results when it comes to improving physiochemical properties. The main components of these materials are cellulose, hemicellulose, and lignin, as well as small amounts of other polysaccharides, proteins, and other extractives. Several kinds of lignocellulosic materials, mainly fibers, have been evaluated in polymer matrices, and recently, the use of particles has increased due to their high surface area. Garlic is a spice seed that generates a waste husk that does not have applications, and there are no reports of industrial use of this kind of lignocellulosic material. Additive manufacturing, also known as 3D printing, is a polymer processing technique that allows for obtaining complex shapes that are hard to obtain with ordinary techniques. The use of composites based on synthetic polymers and lignocellulosic materials is a growing field of research. In the present work, the elaboration and evaluation of 3D-printed polypropylene–garlic husk particle (PP-GHP) composites are reported. First, the process of obtaining a filament by means of a single extrusion was carried out, using different GHP contents in the composites. Once the filament was obtained, it was taken to a 3D printer to obtain probes that were characterized using differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) was performed with the aim of evaluating the thermal behavior of the 3D-printed PP-GHP composites. According to the obtained results, the crystallization process and thermal stability of the PP-GHP composites were modified with the presence of GHP compared with pristine PP. Dynamic mechanical analysis (DMA) showed that the addition of GHP decreased the storage modulus of the printed composites and that the Tan δ peak width increased, which was associated with an increase in toughness and a more complex structure of the 3D-printed composites. X-ray diffraction (XRD) showed that the addition of GHP favored the presence of the β-phase of PP in the printed composites.

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Preparation and Evaluation of Thermal Properties of Composites Based on Polypropylene Reinforced with Garlic Husk Particles (GHP)

Cited by 2 publications

References 40 publications

Evaluation of Starch–Garlic Husk Polymeric Composites through Mechanical, Thermal, and Thermo-Mechanical Tests

Evaluation of Starch–Garlic Husk Polymeric Composites through Mechanical, Thermal, and Thermo-Mechanical Tests

Development of a Composite Filament Based on Polypropylene and Garlic Husk Particles for 3D Printing Applications

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