Preparation and characterization of cellulose nanofiber reinforced thermoplastic starch composites

Nasri‐Nasrabadi, Bijan; Behzad, Tayebeh; Bagheri, Rouhollah

doi:10.1007/s12221-014-0347-0

Cited by 72 publications

(56 citation statements)

References 18 publications

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“…For the present study, the obtained values come near to the reported ones of the cancellous bone and significantly lower than the ones in cortical bone. Notwithstanding, the addition of CNF, even in a small amount, influenced the scaffolds mechanical response [21, 39], increasing the mechanical properties of the scaffolds (Table 3). Furthermore, the addition of the ceramic HANP improved the performance of the structures under compressive loads, which is in accordance with previous literature [34, 40, 41].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Poly(ε-caprolactone) Scaffolds Reinforced with Cellulose Nanofibers, with and without the Addition of Hydroxyapatite Nanoparticles

Morouço

Biscaia

Viana

et al. 2016

BioMed Research International

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Biomaterial properties and controlled architecture of scaffolds are essential features to provide an adequate biological and mechanical support for tissue regeneration, mimicking the ingrowth tissues. In this study, a bioextrusion system was used to produce 3D biodegradable scaffolds with controlled architecture, comprising three types of constructs: (i) poly(ε-caprolactone) (PCL) matrix as reference; (ii) PCL-based matrix reinforced with cellulose nanofibers (CNF); and (iii) PCL-based matrix reinforced with CNF and hydroxyapatite nanoparticles (HANP). The effect of the addition and/or combination of CNF and HANP into the polymeric matrix of PCL was investigated, with the effects of the biomaterial composition on the constructs (morphological, thermal, and mechanical performances) being analysed. Scaffolds were produced using a single lay-down pattern of 0/90°, with the same processing parameters among all constructs being assured. The performed morphological analyses showed a satisfactory distribution of CNF within the polymer matrix and high reliability was obtained among the produced scaffolds. Significant effects on surface wettability and thermal properties were observed, among scaffolds. Regarding the mechanical properties, higher scaffold stiffness in the reinforced scaffolds was obtained. Results from the cytotoxicity assay suggest that all the composite scaffolds presented good biocompatibility. The results of this first study on cellulose and hydroxyapatite reinforced constructs with controlled architecture clearly demonstrate the potential of these 3D composite constructs for cell cultivation with enhanced mechanical properties.

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Section: Resultsmentioning

confidence: 99%

Fabrication of Poly(ε-caprolactone) Scaffolds Reinforced with Cellulose Nanofibers, with and without the Addition of Hydroxyapatite Nanoparticles

Morouço

Biscaia

Viana

et al. 2016

BioMed Research International

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“…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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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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“…After the purification, rice straw microbiers with a dimension of around 5-20 µm were obtained ( Figure 2). The effect of the fiber content on the composites indicated the mechanical and water resistant properties have been improved with increasing content of cellulose fibers (29).…”

Section: Wheat and Rice Strawmentioning

confidence: 99%

“…The incorporation of reinforcement into a matrix is carried out with the aim of enhancing the specific mechanical properties of composites. The main factors of reinforcement governing reinforcing a matrix, apart from fiber loading, are specific surface area, dispersion in a matrix and interaction to a matrix (25,29). A composite panel, made from a mixture of RH and wattle (acacia minosa) tannin based resin, had a drastic improvements in stiffness through a slight physical modification by hammer-milling RH particles and removal of very fine particles.…”

Section: Rice Huskmentioning

confidence: 99%

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Lightweight Composites Reinforced by Agricultural Byproducts

2014

ACS Symposium Series

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Preparation and characterization of cellulose nanofiber reinforced thermoplastic starch composites

Cited by 72 publications

References 18 publications

Fabrication of Poly(ε-caprolactone) Scaffolds Reinforced with Cellulose Nanofibers, with and without the Addition of Hydroxyapatite Nanoparticles

Fabrication of Poly(ε-caprolactone) Scaffolds Reinforced with Cellulose Nanofibers, with and without the Addition of Hydroxyapatite Nanoparticles

Production and characterization of microfibrillated cellulose‐reinforced thermoplastic starch composites

Lightweight Composites Reinforced by Agricultural Byproducts

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