Mechanical, physical and microstructural properties of acetylated starch-based biocomposites reinforced with acetylated sugarcane fiber

Fitch-Vargas, Perla Rosa; Camacho‐Hernández, Irma Leticia; Martı́nez-Bustos, Fernando; Islas-Rubio, Alma Rosa; Carrillo-Cañedo, Karen Itzel; Calderón-Castro, Abraham; Jacobo-Valenzuela, Noelia; Carrillo‐López, Armando; Delgado-Nieblas, C.I.; Aguilar‐Palazuelos, Ernesto

doi:10.1016/j.carbpol.2019.05.043

Cited by 55 publications

(26 citation statements)

References 34 publications

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“…Morphological modification is also a common strategy that is utilized to change starches' functional properties to give porous starch or starch nanoparticles (NPs) (Li, Zhao et al, 2018;Oliyaei, Moosavi-Nasab, Tamaddon, & Fazaeli, 2020;Xiang et al, 2016;Yang et al, 2017). Enzymatic modification by pullulanase, an enzyme that cleaves (1,6)-α-D glycosidic linkages, can also effectively change the amylopectin to amylose ratio (Abidin et al, 2018; Although most of these modification strategies involve fairly simple synthetic reaction steps, much attention has recently been focused on developing and optimizing processes for reactive extrusion of starch, opening the door for further commercialization of starch-based products (Fitch-Vargas et al, 2019;Fonseca-Florido et al, 2019;Jebalia et al, 2019;Kaisangsri, Kowalski, Kerdchoechuen, Laohakunjit, & Ganjyal, 2019;Liu et al, 2019;Milotskyi, Bliard, Tusseau, & Benoit, 2018;Nessi et al, 2019;Siyamak, Laycock, & Luckman, 2020;Tian, Zhang, Sun, Jin, & Wu, 2015;Ye et al, 2019). Although chemical modification of starch typically diminishes the mechanical properties of the resultant films by causing less efficient polymer packing and subsequent decreases in film crystallinity, modified films can exhibit some improvements in some mechanical properties (Table 2, entries 40 and 41) as well as oftentimes leading to better barrier properties or increased compatibilization with additives that can offset the decrease in properties (Table 2, entries 10 and 38) or can endow the film with additional function while decreasing the potential for retrogradation (Colussi et al, 2017;Fu et al, 2019).…”

Section: Modification Strategiesmentioning

confidence: 99%

Recent advances in starch‐based films toward food packaging applications: Physicochemical, mechanical, and functional properties

Lauer

Smith

2020

Comp Rev Food Sci Food Safe

106

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Interest in starch-based films has increased precipitously in response to a growing demand for more sustainable and environmentally sourced food packaging materials. Starch is an optimal candidate for these applications given its ability to form thermoplastic materials and films with affordable and often sustainably sourced plasticizers like those produced as waste byproducts by biodiesel and agricultural industries. Starch is also globally ubiquitous, affordable, and environmentally benign. Although the process of producing starch films is relatively straightforward, numerous factors, including starch source, extraction method, film formulation, processing methods, and curing procedures, drastically impact the ultimate material properties. The significant strides made from 2015 to early 2020 toward elucidating how these variables can be leveraged to improve mechanical and barrier properties as well as the implementation of various additives or procedural modifications are cataloged in this review. Advances toward the development of functional films containing antioxidant, antibacterial, or spoilage indicating components to prevent or signal the degradation of food products are also discussed.

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Section: Modification Strategiesmentioning

confidence: 99%

Recent advances in starch‐based films toward food packaging applications: Physicochemical, mechanical, and functional properties

Lauer

Smith

2020

Comp Rev Food Sci Food Safe

106

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“…For two decades, acetylated starches from cassava and corn have been employed to produce TPS via thermal processes using extruder 21–25 or internal mixer 8,10,26,27 . The resulting TPS materials were converted into final products/specimens using blown film extrusion, 23 cast sheet extrusion, 24 and hot pressing/compression molding 22,26 . Even though TPS from acetylated starch showed improved extensibility and reduced moisture/water absorption as compared with the one from native starch, 21,23 its performances still limited for practical uses.…”

Section: Introductionmentioning

confidence: 99%

Compatibility improvement of poly(lactic acid)/thermoplastic starch blown films using acetylated starch

Noivoil

Yoksan

2020

J of Applied Polymer Sci

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The present research aims to improve the compatibility between relatively hydrophobic poly(lactic acid) (PLA) and hydrophilic thermoplastic starch (TPS) and the properties of the PLA/TPS blends by replacing TPS from native cassava starch (TPSN) with TPS from acetylated starch (TPSA). The effects of the degree of acetylation (DA) of acetylated starch, that is, 0.021, 0.031, and 0.074, on the morphological characteristics and properties of PLA/TPS blend are investigated. The melt blends of PLA and TPS with a weight proportion of PLA:TPS of 50:50 are fabricated and then blown into films. Scanning electron microscopy confirms the dispersion of TPS phase in the PLA matrix. Better dispersion and smaller size of the TPS phase are observed for the PLA/TPSA blend films with low DA of acetylated starch, resulting in improved tensile and barrier properties and increased storage modulus, thermal stability, and Tg, Tcc, and Tm of PLA. Elongation at break of the PLA/TPSA blend increases up to 57%, whereas its water vapor permeability and oxygen permeability decrease about 15%. The obtained PLA/TPSA blend films have the potential to be applied as biodegradable flexible packaging.

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“…Fitch-Vargas et al explored the influence of acetylated fiber and glycerin content on the mechanical, physical, and microstructural properties of acetylated corn-starch-based biocomposites. The acetylated sugarcane-fiber-filled starch-based composite prepared by thermoplastic extrusion was found to have favorable mechanical properties and water resistance [28]. Ibrahim et al prepared biodegradable composite membranes using thermoplastic corn starch and corn husk fiber as reinforcing fillers.…”

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confidence: 99%

Preparation and Properties of Cassava Residue Cellulose Nanofibril/Cassava Starch Composite Films

Huang

Zhao

et al. 2020

Nanomaterials

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Because of its non-toxic, pollution-free, and low-cost advantages, environmentally-friendly packaging is receiving widespread attention. However, using simple technology to prepare environmentally-friendly packaging with excellent comprehensive performance is a difficult problem faced by the world. This paper reports a very simple and environmentally-friendly method. The hydroxyl groups of cellulose nanofibrils (CNFs) were modified by introducing malic acid and the silane coupling agent KH-550, and the modified CNF were added to cassava starch as a reinforcing agent to prepare film with excellent mechanical, hydrophobic, and barrier properties. In addition, due to the addition of malic acid and a silane coupling agent, the dispersibility and thermal stability of the modified CNFs became significantly better. By adjusting the order of adding the modifiers, the hydrophobicity of the CNFs and thermal stability were increased by 53.5% and 36.9% ± 2.7%, respectively. At the same time, the addition of modified CNFs increased the tensile strength, hydrophobicity, and water vapor transmission coefficient of the starch-based composite films by 1034%, 129.4%, and 35.95%, respectively. This material can be widely used in the packaging of food, cosmetics, pharmaceuticals, and medical consumables.Nanomaterials 2020, 10, 755 2 of 19 starch films, researchers have often added different types of enhancers to starch film to improve its strength [11][12][13][14]. Cellulose nanofibril (CNF) has become an ideal starch film enhancer due to its low cost, low density, renewability, recyclability, high surface area, chemical reactivity, strength, modulus, elasticity, transparency, tensile rigidity, light weight, low thermal expansion, and biodegradability (due to its nano-size characteristics) [15][16][17].Cellulose nanofibril comes from various sources of natural fibers, such as cotton, wood, corn cobs, sisal, wheat straw, flax, bamboo, rice husks, pea husks, coconut shells, bagasse, and cassava residues. However, CNF is hydrophilic and absorbs moisture when exposed [18]. Therefore, the surface hydrophobicity of CNF can be changed using various chemical modification techniques, thereby improving the compatibility and dispersibility of CNF in specific solvents [19]. Through phosphorylation, carboxymethylation, oxidation and sulfonation reactions, ionic charge can be introduced to the surface of cellulose [20-23]; esterification, silylation, amidation, urethanation, and etherification can make the cellulose surface hydrophobic [24][25][26]. In summary, no matter what surface chemistry is ultimately required, the modification technology depends almost entirely on the reaction of the hydroxyl groups on the surface of the CNF. The challenge for these chemical modification technologies is to change only the surface of the CNF, maintaining its original morphology and the complex structure of its internal hydroxyl groups.Wei et al. extracted CNF from oil palm waste by acid hydrolysis using natural lime juice as a cross-linking agent. The struc...

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Mechanical, physical and microstructural properties of acetylated starch-based biocomposites reinforced with acetylated sugarcane fiber

Cited by 55 publications

References 34 publications

Recent advances in starch‐based films toward food packaging applications: Physicochemical, mechanical, and functional properties

Recent advances in starch‐based films toward food packaging applications: Physicochemical, mechanical, and functional properties

Compatibility improvement of poly(lactic acid)/thermoplastic starch blown films using acetylated starch

Preparation and Properties of Cassava Residue Cellulose Nanofibril/Cassava Starch Composite Films

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