Particle Size Distribution Effect on Cassava Starch and Cassava Bagasse Biocomposites

Versino, Florencia; García, María Alejandra

doi:10.1021/acssuschemeng.8b04700

Cited by 27 publications

(13 citation statements)

References 40 publications

(91 reference statements)

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“…This effect could be attributed how filler particles with different sizes fit within the matrix, probably giving place to more clustered and therefore steady structures. [46,47] It is well known that particle size, dispersion state, and interfacial interaction are three crucial parameters for the development on performance of filler/polymer biocomposites. [48] Codou et al [49] found that the smaller particles were beneficial in reducing the porosity of the biocarbon-reinforced nylon 6/polypropylene biocomposites.…”

Section: Discussionmentioning

confidence: 99%

Green epoxy resin/date stone flour biocomposites: Effect of filler chemical treatments on elastic properties

et al. 2021

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This work aims to study the effect of chemical treatments of date stone flour (DSF) as a filler on the elastic properties of biocomposites based on green epoxy resin (GER) used as a matrix. The main disadvantages of natural reinforcements in biocomposites are the poor compatibility between the reinforcement and the matrix as well as the relatively high moisture sorption. Different chemical treatments using soda (alkaline), benzoyl chloride, and potassium permanganate were applied to the DSF filler. Then, the filler was incorporated into the matrix at 30 wt % to obtain GER/DSF biocomposites. The elastic properties of the biocomposites, namely, longitudinal modulus, shear modulus, bulk modulus, Young's modulus of elasticity, acoustic impedance, Poisson's ratio, and ultrasonic microhardness, were determined using ultrasonic through-transmission method. In addition, the morphology was studied using microscopy analysis. The results obtained revealed a decrease of the elastic properties of the pretreated-filler biocomposite compared to the pure GER. On the other hand, the chemical treatment of the filler leads to an improvement of the elastic properties of GER/DSF biocomposites. The permanganate treatment is the most suitable for GER/DSF biocomposites. The morphology analysis through optical microscopy and scanning electron microscopy showed that chemical treatments enhance the interfacial adhesion between the DSF filler and the GER matrix.

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Section: Discussionmentioning

confidence: 99%

Green epoxy resin/date stone flour biocomposites: Effect of filler chemical treatments on elastic properties

et al. 2021

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“…It was then ground in a knife and ball mill, and separated in different granulometry, by means of an electromagnetic sieve shaker for 20 min, using different sieve diameters. In this study, only fibers with a size of about 0.08 to 0.07 mm (170 to 200 mesh sieve) were used (Brito et al., 2019; Versino & García, 2019). The BSG was comprehensively characterized elsewhere (cellulose, hemicellulose, lignin, and total dietary fibers contents: 28, 32, 26, and 14 wt.%, respectively) (Mendes et al., 2020b).…”

Section: Methodsmentioning

confidence: 99%

Development of quaternary nanocomposites made up of cassava starch, cocoa butter, lemongrass essential oil nanoemulsion, and brewery spent grain fibers

Mendes

Norcino

Martins

et al. 2021

Journal of Food Science

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We report on production of novel quaternary nanocomposite films based on thermoplastic starch (TPS, 8% w/v) derived from cassava, cocoa butter, (CB, 30% wt.%), and lemongrass essential oil (LEO, 1:1) nanoemulsions reinforced with different concentrations of brewery spent grain (BSG, 5 or 10 wt.%) fibers, by continuous casting. The chemical composition, the morphological, thermal, mechanical properties, film barrier, biodegradability in the vegetable compound, in addition to the application in chocolates, have been widely studied. The addition of CB, LEO, and BSG caused relevant changes in the starch‐based films, such as increased extensibility (from 2.4‐BSG5 to 9.4%‐BSG10) and improved barrier to moisture (2.9 and 2.4 g.mm.kPa−1.h−1.m−2). Contrastingly, the thermal stability of the starch film was slightly decreased. The biodegradability of the herein developed quaternary nanocomposite films was the same as that of TPS films, eliminating concerns on the supplementation with active ingredients that are expected to have some biocidal effect. Despite checking antimicrobial activity only by contact under the biocomposites, chocolates packed with the films were well accepted by consumers, especially the samples of white chocolate stored in the BSG5 biocomposite. Overall, this new approach towards quaternary active, biodegradable films produced in a pilot‐scale lamination unit was successful in either improving or at least maintaining the essential properties of TPS‐based films for food packaging applications, while providing them with unique features and functionalities. Practical Application This contribution relates to new approach toward quaternary films produced in a pilot‐scale lamination unit. It relates to sustainability as it is both biodegradable and based on plant biomass, as well as produced via a clean, through high‐yield process. The four components of the edible films we developed provide it with good in properties performance, as both a passive barrier (i.e. purely physical), and active, related to the sensory attributes of food, essential to be applied in food packaging. The valorization of a BSG also adds to the relevance of our contribution within the circular bioeconomy framework.

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“…Treatments with MA, NaOH, and PCL‐g‐MA increased the adhesion between the PCL and treated shells (black circles), promoting greater PCL wettability in the shell and reducing the shell particles pulled from the matrix 44,45 …”

Section: Resultsmentioning

confidence: 99%

Approaches on PCL/macaíba biocomposites ‐ mechanical, thermal, morphological properties and crystallization kinetics

Siqueira

Luna

Araújo

et al. 2021

Polymers for Advanced Techs

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Biocomposites based on macaíba shell (MS) and Polycaprolactone (PCL) were melting processed in this work; seeking better compatibility between PCL, MS was chemically treated with maleic anhydride (MA) and sodium hydroxide (NaOH), in addition, PCL‐g‐MA was used as compatibilizer. The biocomposites' performance was evaluated through Fourier transform infrared (FTIR), thermogravimetry (TG), contact angle, water absorption, scanning electron microscopy (SEM), the tensile experiments were executed according to ASTM D638 and the nonisothermal crystallization kinetics was performed from differential scanning calorimetry (DSC) scans using Pseudo‐Avrami, Ozawa, and Mo models. Chemical treated and compatibilized biocomposites presented better tensile behavior with no significant changes in the thermal stability. Higher HDT was verified on PCL/MS biocompounds due to the MS hardening effect, whereas higher contact angle and water absorption were computed for PCL/MS most due to new ways origin for the water get in as provided by MS. Related to crystallization kinetics Ozawa as displayed in the Appendix S1 failed to fit PCL/MS kinetics whereas Pseudo‐Avrami and Momay be safely used form processing purposes. Summing up, PCL/MS biocomposites were carefully investigated and gathered information may be promptly used in sundry applications as well as be added to the literature database.

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Particle Size Distribution Effect on Cassava Starch and Cassava Bagasse Biocomposites

Cited by 27 publications

References 40 publications

Green epoxy resin/date stone flour biocomposites: Effect of filler chemical treatments on elastic properties

Green epoxy resin/date stone flour biocomposites: Effect of filler chemical treatments on elastic properties

Development of quaternary nanocomposites made up of cassava starch, cocoa butter, lemongrass essential oil nanoemulsion, and brewery spent grain fibers

Approaches on PCL/macaíba biocomposites ‐ mechanical, thermal, morphological properties and crystallization kinetics

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