Starch-based nanocomposites: A comparative performance study of cellulose whiskers and starch nanoparticles

Nasseri, Rasool; Mohammadi, Naser

doi:10.1016/j.carbpol.2014.01.029

Cited by 63 publications

(28 citation statements)

References 32 publications

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“…The related studies often addressed the development of fully bio‐based and thus biodegradable packaging materials. Thermoplastic starch (TPS) is considered as one of the most promising biomaterials for packaging purpose, mainly because of its low price and biodegradability . Note that starch is a renewable feedstock considering the fact that it can be recovered from numerous plants (potato, corn, sago, etc.)…”

Section: Introductionmentioning

confidence: 99%

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Production and characterization of microfibrillated cellulose‐reinforced thermoplastic starch composites

Lendvai

Karger‐Kocsis

Kmetty

et al. 2015

J of Applied Polymer Sci

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In this study thermoplastic starch (TPS) matrix-based microfibrillated cellulose (MFC) reinforced microcomposites were prepared via extrusion compounding in one-step. Starch was plasticized with a combination of glycerol and water. The native starch/glycerol and the plasticized starch/water ratios were set for 4/1 and 6/1, respectively. Two different MFC types (of varying mean length and diameter) were incorporated up to 20 wt.% in the plasticizer-containing premix prior to its compounding in a twinscrew extruder. The mechanical properties of the TPS biocomposites were markedly enhanced by the introduction of MFC. The yield strength was improved by ~50%, whereas the stiffness by ~250% upon adding 20 wt.% MFC compared to the parent TPS. Dynamic mechanical analysis (DMA) revealed that the reinforcing effect of the MFC was more prominent in the starch-than in the glycerol (plasticizer)-rich phase of the TPS. The mean length and diameter of the MFCs, yielding similar aspect ratio values lying below the estimated critical one, influenced the mechanical, thermal and thermo-mechanical properties marginally.

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Section: Introductionmentioning

confidence: 99%

“…By using one‐ or two‐step extrusion process the properties (mechanical, thermal, barrier…) of the TPS‐based systems can be tuned to meet the application requirements. For TPS material development, however, other techniques such as dissolution followed by solution casting can also be used …”

Section: Introductionmentioning

confidence: 99%

Production and characterization of microfibrillated cellulose‐reinforced thermoplastic starch composites

Lendvai

Karger‐Kocsis

Kmetty

et al. 2015

J of Applied Polymer Sci

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“…DSC curves of composites with glass transition heat flux peak (G), endothermic peak (M), and exothermic peak (C) are presented in Figure 6. 33 However, the G peak reflects the change of molecular chain order and the corresponding temperature represents the T g . 32 The corresponding temperature is emerged in Table II.…”

Section: Microstructurementioning

confidence: 99%

Effects of different silane coupling agents on structure and properties of starch–chitosan–kaolin composites

Zhang

Xing

et al. 2019

J of Applied Polymer Sci

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Effects of different silane coupling agents on clay surface modification were studied. Herein, functionalized superfine kaolin was compounded with starch-chitosan (SCS) to prepare starch-chitosan-functionalized superfine kaolin composite. The characterization results showed that kaolin (K) was successfully modified; the composite formed a dense intercalated structure. The glass-transition temperature (T g ) was measured by differential scanning calorimetry and dynamic mechanical analysis. It decreased by 60 C which attested the crystallinity of SCS. The results of thermogravimetric analysis showed that the fastest weight-loss temperature (T max ) was elevated by over 50 C for composites. Mechanical properties of the composites were explored by electronic universal testing machine. Tensile strength and elongation of composites were improved by 4.7 and 10.9 times.

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“…Carbon dioxide chromatographic 5 grade with purity of 99.99% was purchased from PRAXAIR, Canada. Tetraethyl orthosilicate (TEOS), ammonium hydroxide (28-30 % aqueous solution), (3-Aminopropyl) triethoxysilane (APTES) 99% were purchased from Sigma-Aldrich.…”

Section: Methodsmentioning

confidence: 99%

“…[1][2][3][4][5] In most cases dispersion of the nanoparticles within the polymer matrix of the nanocomposites is desired, however for some applications, such as colloidosomes, nanoparticle-armed polymer latex, Janus structures, and foams and emulsions stabilized by particles, localization is necessary. [6][7][8][9][10] Polymeric foams have the advantages of good mechanical, energy-absorbing, and thermal-insulation properties.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Surface-Modified Silica Nanoparticles to the Interface of Melt Poly(lactic acid) and Supercritical Carbon Dioxide

Sarikhani¹,

Jeddi²,

Thompson³

et al. 2015

Langmuir

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With the purpose of fabricating polymer nanocomposite foams and preventing coalescence in foaming processes, the interfacial tension of poly (lactic acid) (PLA) -silica composites is investigated in this work. Synthesized silica nanoparticles (SNs) with a CO 2 -philic surface modification are used as the dispersed nanoparticles. Interfacial tension is a key parameter in processing of polymer foams since it directly affects the final foam properties, such as cell size and cell density. Interfacial tension of silica-containing PLA and supercritical carbon dioxide (CO 2 ) is measured using Axisymmetric Drop Shape Analysis Profile (ADSA-P) pendant drop method at high pressures and high temperatures. The interfacial tension between PLA and supercritical CO 2 is observed to decrease as a result of nanoparticles' adsorption to the interface. These results indicate that the reduction in interfacial tension with increasing silica content significantly deviates from a linear trend; there is a minimum at 2 wt. % loading of the SNs and then the interfacial tension curve reaches a plateau. Contact angle measurements show an affinity of the SNs for the polymer-supercritical CO 2 interface, and these obtained results are used to calculate the binding energy of the nanoparticles to the PLA / CO 2 interface. In addition to interfacial properties, the adsorption of silica nanoparticles at the interface is also studied in detail with Scanning Electron Microscopy.

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Starch-based nanocomposites: A comparative performance study of cellulose whiskers and starch nanoparticles

Cited by 63 publications

References 32 publications

Production and characterization of microfibrillated cellulose‐reinforced thermoplastic starch composites

Production and characterization of microfibrillated cellulose‐reinforced thermoplastic starch composites

Effects of different silane coupling agents on structure and properties of starch–chitosan–kaolin composites

Adsorption of Surface-Modified Silica Nanoparticles to the Interface of Melt Poly(lactic acid) and Supercritical Carbon Dioxide

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