Microfibrillated cellulose (MFC): pullulan bionanocomposite films

Cozzolino, Carlo A.; Cerri, Guido; Brundu, Antonio; Farris, Stefano

doi:10.1007/s10570-014-0433-x

Cited by 39 publications

(34 citation statements)

References 59 publications

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“…Oxygen barrier issues will be considered first here, mainly in recognition of the outstanding performance levels reported by some authors (Fukuzimi et al 2009;Syverud and Stenius 2009; Aulin et al 2010a;Cozzolino et al 2014;Kisonen et al 2015). It seems likely that at least part of the recent spurt of academic and industrial attention directed toward nanocellulose films in packaging can be traced to a superior ability to block the passage of oxygen.…”

Section: Oxygen Barrier Performance Concernsmentioning

confidence: 97%

Section: Review Articlementioning

confidence: 99%

“…Numerous researchers have discovered that resistance to oxygen permeation falls rapidly when the relative humidity rises (Martínez-Sanz et al 2013a;Cozzolino et al 2014;Miettinen et al 2014; Tammelin and Varianen 2014). For instance, Cozzolino et al (2014) found roughly 20 times higher oxygen transmission through MFC-based films at 80% relative humidity in comparison to completely dry conditions.…”

Section: Moisture Sensitivity Concerns Moisture Sensitivity Of O2 Barmentioning

confidence: 99%

“…Indeed, high levels of resistance to oxygen have been reported from studies focusing on NFC (Fukuzimi et al 2009;Syverud and Stenius 2009; Aulin et al. 2010a;Cozzolino et al 2014;Kisonen et al 2015).In light of the findings just cited, one might expect that such resistance might increase with increased fibrillation. Siro et al (2011) found otherwise.…”

mentioning

confidence: 94%

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Nanocellulose in Thin Films, Coatings, and Plies for Packaging Applications: A Review

Hubbe

Ferrer

Tyagi

et al. 2017

BioRes

240

234

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This review article was prompted by a remarkable growth in the number of scientific publications dealing with the use of nanocellulose (especially nanofibrillated cellulose (NFC), cellulose nanocrystals (CNC), and bacterial cellulose (BC)) to enhance the barrier properties and other performance attributes of new generations of packaging products. Recent research has confirmed and extended what is known about oxygen barrier and water vapor transmission performance, strength properties, and the susceptibility of nanocellulose-based films and coatings to the presence of humidity or moisture. Recent research also points to various promising strategies to prepare ecologically-friendly packaging materials, taking advantage of nanocellulose-based layers, to compete in an arena that has long been dominated by synthetic plastics. Some promising approaches entail usage of multiple layers of different materials or additives such as waxes, high-aspect ratio nano-clays, and surface-active compounds in addition to the nanocellulose material.While various high-end applications may be achieved by chemical derivatization or grafting of the nanocellulose, the current trends in research suggest that high-volume implementation will likely incorporate water-based formulations, which may include water-based dispersions or emulsions, depending on the enduses. Resources; North Carolina State University, Raleigh, NC 27695, USA; b: Nalco Champion, an Ecolab Company, 7705 Highway 90-A, Sugar Land, TX 77478, USA; c: School of Clothing and Textiles, Jiangnan University, Wuxi, Jiangsu, China; d: Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, PO Box 16300, FI-00076 Aalto, Finland; * Corresponding author: hubbe@ncsu Table B -Barrier properties of NFC films 2144 2145 2145 2149 2151 2152 2153 2155 2155 2157 2157 2158 2158 2159 2159 2166 2170 2172 2173 2174 2175 2177 2179 2208 2208 2228 REVIEW ARTICLE bioresources.com . "Nanocellulose in packaging," BioResources 12(1), 2143-2233. 2144 Keywords: Barrier properties; Water vapor transmission; Food shelf life; Oxygen transmission; Packages; Cellulose nanomaterials Contact information: a: Department of Forest Biomaterials, College of Natural INTRODUCTIONThere has been explosive growth in the publication of peer-reviewed articles that combine key words related to "packaging" and "cellulose," in combination with the terms "nanocellulose," "nanocrystal*," or "nanofibril*". As of November 2016, a search of this combination of terms showed about as many publications since the start of 2015, compared to all preceding years combined. Given such an acceleration of research around the world, it makes sense to ask whether this high amount of research effort has yet borne significant fruit. In light of this question, the emphasis of this review article is on research publications that shed light on known challenges to the successful implementation of nanocellulose products to enhance the performance of packaging.In principle, a nano...

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Section: Oxygen Barrier Performance Concernsmentioning

confidence: 97%

Section: Review Articlementioning

confidence: 99%

Section: Moisture Sensitivity Concerns Moisture Sensitivity Of O2 Barmentioning

confidence: 99%

mentioning

confidence: 94%

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Nanocellulose in Thin Films, Coatings, and Plies for Packaging Applications: A Review

Hubbe

Ferrer

Tyagi

et al. 2017

BioRes

240

234

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“…Figure 6 compares the molecular structure changes of MCC with and without metal ions during alkaline degradation. In the FTIR spectrum, 3400 cm -1 expressed the hydroxyl absorption peaks in the intra-and inter-molecular hydrogen bonds (Dayal et al 2013;Cozzolino et al 2014;Rozenberga et al 2016). The characteristic band at 2900 cm −1 was attributed to the C-H stretching vibration.…”

Section: Effect Of Mgmentioning

confidence: 99%

Influencing Factors for Alkaline Degradation of Cellulose

Qun¹,

Wang²,

Ding³

et al. 2017

BioResources

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Different factors that influence the alkaline degradation of cellulose in the pulping process were considered in this study. The factors were the reaction temperature, reaction time, dosage of NaOH, and metal ions. Microcrystal cellulose (MCC) was applied as the model compound. To measure the influence of different metal ions on the alkaline degradation of cellulose, K + and Mg 2+ were added into the reaction system. The Fourier transform infrared (FTIR) spectra of the MCC in the solution with and without K + and Mg 2+ were analyzed to clarify the reaction mechanism of the alkaline degradation of cellulose and MCC. Alkaline degradation increased with increasing reaction temperature, reaction time, and alkali concentration. When the reaction temperature was above 80 °C, the reaction time was above 2 h, or the alkali content was below 5 g/L, the degradation ratio of MCC decreased. The amount of degraded MCC and the concentration of glucose in the reaction solution exhibited a nearly linear relationship when the alkali quantity increased from 0 g/L to 5 g/L. K + and Mg 2+ had an opposite impact on the alkaline degradation. While the K + promoted the alkaline degradation of cellulose, the Mg 2+ inhibited it, along with an increase of the dosage of the two metal ions.

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Chiral Cellulose Nanocrystals with Intercalated Amorphous Polysaccharides for Controlled Iridescence and Enhanced Mechanics

Adstedt

Popenov

Pierce

et al. 2020

Adv Funct Materials

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A unique case of combined enhanced mechanical performance and tunable structural color for chiral composites from cellulose nanocrystals (CNCs) arises by adding nanofibrillar wood-derived polymers with similar chemical compositions. When amorphous polysaccharides (pullulan, dextran, and xylan) are added, they intercalate seamlessly into the original helicoidal organization via interstitial volumes within nanocrystals and between nematic monolayers. The polysaccharides fill the available free volume in between packed nanocrystals until 40 wt% content is reached, with no phase separation occurring. Due to the inter-nanocrystal intercalation, these natural polysaccharide-cellulose composites show a nearly twofold increase in toughness and modulus. Beyond improved mechanics, the preserved iridescence shows a dramatic red shift from blue to near-infrared region, expanding the initial pitch length without disturbing the long-range chiral ordering. In the mechanistic model suggested here, the individual backbones first form intercalated morphologies in the interstitial volumes between tightly packed nanocrystals. After this, the polysaccharides form a monolayer, and eventually double layer, between nanocrystal monolayers, thus incrementally "unwinding" initial chiral organization. The resulting CNC-polysaccharide films maintain their vivid iridescence with broad color appearance and are among the first entirely biobased composites to maintain iridescence with improved mechanics.

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Microfibrillated cellulose (MFC): pullulan bionanocomposite films

Cited by 39 publications

References 59 publications

Nanocellulose in Thin Films, Coatings, and Plies for Packaging Applications: A Review

Nanocellulose in Thin Films, Coatings, and Plies for Packaging Applications: A Review

Influencing Factors for Alkaline Degradation of Cellulose

Chiral Cellulose Nanocrystals with Intercalated Amorphous Polysaccharides for Controlled Iridescence and Enhanced Mechanics

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