Biocomposites of thermoplastic starch with surfactant

Mondragón, Margarita; Arroyo, Karen Lizeth Ayala; Romero‐García, Jorge

doi:10.1016/j.carbpol.2008.02.004

Cited by 48 publications

(23 citation statements)

References 22 publications

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“…This was attributed to the formation of amylose-GMS complexes, which could increase the V-type crystallinity and interact with the hydroxyl groups of cellulose. Although the relative increase of Young's modulus was higher than that reported by Alemdar and Sain (Alemdar and Sain 2008b), the absolute values were significantly lower in the study by Mondragón et al (2008) (see Table 4). This might be explained by the difference both in TPS and in MFC sources.…”

Section: Starchcontrasting

confidence: 74%

“…Application of fillers such as clays (Huang et al 2004;Yoon and Deng 2006;Lee et al 2007a, b;Cyras et al 2008), natural fibers (Romhany et al 2003;Alvarez et al 2004;Ma et al 2005;Duanmu et al 2007) cellulose whiskers (Cao et al 2008;Mathew et al 2008), or microcrystalline cellulose (Kumar and Singh 2008;Ma et al 2008a;Kadokawa et al 2009) are reported. MFC and BC have also been reported as promising candidates for starch reinforcement (Grande et al 2008;Mondragón et al 2008;Sreekala et al 2008) and some of these applications are discussed here. Vignon (1998, 2000) aimed to improve the thermomechanical properties and to reduce the water sensitivity of potato starch-based nanocomposites, while preserving the biodegradability of the material through addition of MFC.…”

Section: Starchmentioning

confidence: 97%

“…In addition, the glass transition (T g ) of the nanocomposites was shifted to higher temperatures with respect to the pure TPS. Mondragón et al (2008) applied glyceryl monostearate (GMS) as surfactant in TPS-MFC nanocomposites prepared by solution casting. As expected, cellulose nanofibers derived from husks and corncobs increased the Young's modulus and tensile strength of TPS films due to the strong interactions between the starch matrix and the high aspect ratio nanofibers.…”

Section: Starchmentioning

confidence: 99%

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Microfibrillated cellulose and new nanocomposite materials: a review

2010

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Due to their abundance, high strength and stiffness, low weight and biodegradability, nano-scale cellulose fiber materials (e.g., microfibrillated cellulose and bacterial cellulose) serve as promising candidates for bio-nanocomposite production. Such new high-value materials are the subject of continuing research and are commercially interesting in terms of new products from the pulp and paper industry and the agricultural sector. Cellulose nanofibers can be extracted from various plant sources and, although the mechanical separation of plant fibers into smaller elementary constituents has typically required high energy input, chemical and/or enzymatic fiber pre-treatments have been developed to overcome this problem. A challenge associated with using nanocellulose in composites is the lack of compatibility with hydrophobic polymers and various chemical modification methods have been explored in order to address this hurdle. This review summarizes progress in nanocellulose preparation with a particular focus on microfibrillated cellulose and also discusses recent developments in bio-nanocomposite fabrication based on nanocellulose.

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Section: Starchcontrasting

confidence: 74%

Section: Starchmentioning

confidence: 97%

Section: Starchmentioning

confidence: 99%

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Microfibrillated cellulose and new nanocomposite materials: a review

2010

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“…Increased stiffness with the addition of MNFC to hydrophilic matrices is well-documented and has previously been (Mikkonen et al 2012), galactoglucomannan (Mikkonen et al 2011), amylopectin (López-Rubio et al 2007) and starch films (Mondragón et al 2008). As expected, the addition of MNFC, having a large specific surface area, significantly increased the strength properties of SMF films, and this is mainly achieved by increasing bonding.…”

Section: Mechanical Propertiesmentioning

confidence: 50%

Dewatering of MNFC containing microfibrils and microparticles from soybean hulls: mechanical and transport properties of hybrid films

2015

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Cellulosic microfibrils (SMF) and microparticles (SMP) extracted from soybean hulls were used in films and also combined with woodbased micro and nanofibrillar cellulose (MNFC) in hybrid systems. During film consolidation a remarkable reduction in water drainage was observed in the presence of SMF and SMP. The hybrid films displayed strength (elastic modulus and strength at rupture) and barrier performance similar to those of neat MNFC films, thus offering an option for reduced cost while keeping a performance from synergistic contributions of the components. Furthermore, dense films with lowporosity, a characteristics essential for barrier properties, can be easily produced by replacing up to 75 % of MNFC with SMF or SMP.

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“…For example, glyceryl monostearate (GMS) was used by Mondragon et al (2008) in MFC/TPS, which resulted in improvement in mechanical properties. Similar improvements in properties were reported by Takagi and Asano (2008a, b) for CNC/esterified starch nanocomposites.…”

Section: Starch As Matrixmentioning

confidence: 99%

Mechanical Properties of Eco-friendly Polymer Nanocomposites

Shahzad

2015

Advanced Structured Materials

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Biopolymers are an alternative to petroleum-based synthetic polymers that are renewable, do not contribute to environmental pollution, and are biodegradable. However, some of their properties like tensile strength, impact strength, thermal stability, and permeability are not of sufficiently high standard and must be improved. One way to improve the properties of biopolymers and thus enhance their commercial potential is to incorporate nano-sized bio-based reinforcements in the polymers. The composites thus formed are called eco-friendly polymer nanocomposites. The research in these composites has increased substantially in the last few years with a corresponding increase in research papers. These composites are finding applications in various fields like medicine, packaging, electronics, the automotive sector, and the construction industry. Polysaccharide polymers that are abundant in nature are increasingly being used for this purpose. The biopolymers most commonly used in these composites are thermoplastic starch (TPS), polylactic acid (PLA), cellulose acetate, chitosan, polyvinyl alcohol (PVA), and epoxidized plant oils. Some examples of the bio-based reinforcements used in these composites are cellulose nanowhiskers, chitin whiskers, and starch nanoparticles (SNP). Extrusion and injection molding are the most widely used methods for manufacturing of these composites. Results show that incorporation of bio-based nanoreinforcements in biopolymers results in improvement in mechanical properties of these composites. These include tensile, flexural, and impact properties. Poor dispersion and agglomeration of nanoreinforcements in biopolymers and their poor interfacial bonding are issues which impose a limit on these composites' mechanical performance. Various physical and chemical methods for surface treatments of nanoreinforcements are used. These methods have been shown to result in improvements of mechanical properties of these composites. There are a number of other issues like sensitivity to moisture and temperature, expensive recycling processes, high variability in properties, nonlinear mechanical behavior, poor long-term performance, and low impact strength, which are hindering the A. Shahzad

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Biocomposites of thermoplastic starch with surfactant

Cited by 48 publications

References 22 publications

Microfibrillated cellulose and new nanocomposite materials: a review

Microfibrillated cellulose and new nanocomposite materials: a review

Dewatering of MNFC containing microfibrils and microparticles from soybean hulls: mechanical and transport properties of hybrid films

Mechanical Properties of Eco-friendly Polymer Nanocomposites

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