Preparation and characterization of chitin whisker-reinforced silk fibroin nanocomposite sponges

In recent years, concerns about environmental waste caused by petroleum-derived chemicals as well as the consumer's demand for high quality food products, have prompted people to pay more attention to developing biodegradable food packaging materials using natural resources such as cellulose fibers and chitin derivatives. In this study, chitin whiskers have been successfully generated by hydrolyzing the α-chitin sample. Then the synthesized nano-sized chitin whiskers were used at ratios from 0.1% to 2% (wt%) for improving strength properties of paper sheets by the dip-coating method. Transmission electron microscopy (TEM) and field emission scanning electron microscopy (FE-SEM) were used to investigate the morphology of chitin whiskers and cellulose fiber compounds. The results showed that coating with chitin whiskers brought about an increase in tear strength, burst strength, and wet and dry tensile strength, with a decrease in Zeta-potential value.

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“…The average aspect ratio of these whiskers was about 20. These dimensions are consistent with previous research (Wongpanit et al 2007). …”

Section: Physical Properties Of the Finished Papersupporting

confidence: 94%

Structure and Properties of Chitin Whisker Reinforced Papers for Food Packaging Application

Yang

Zhang

et al. 2015

BioResources

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“…Many researchers worked on biodegradable polymeric matrices such as starch (Savadekar et al 2013;Choi and Simonsen 2006;Lu et al 2006), soy protein (Lu et al 2004), silk fibroin (Wongpanit et al 2007), polylactide (PLA) (Huang et al 2006), or poly(vinyl alcohol) (PVA) ) and non-biodegradable polymeric matrices such as polypropylene (Ljungberg et al 2005), poly(vinyl chloride) (Chazeau et al 2000), poly(oxyethylene) (Azizi Samir et al 2005) and epoxy resin (Shimazaki et al 2007) have been utilized in making nanocomposites containing cellulose nanowhiskers, nanocrystals, or nanofibers as reinforcing agent and improvements were observed in their mechanical and functional properties.…”

Section: Introductionmentioning

confidence: 99%

Preparation of cotton linter nanowhiskers by high-pressure homogenization process and its application in thermoplastic starch

et al. 2014

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The present work deals with the preparation of cotton linter nanowhiskers (CLNW) by acid hydrolysis and subsequent processing in a high-pressure homogenizer. Prepared CLNW were then used as a reinforcing material in thermoplastic starch (TPS), with an aim to improve its performance properties. Concentration of CLNW was varied as 0, 1, 2, 3, 4 and 5 wt% in TPS. TPS/CLNW nanocomposite films were prepared by solution-casting process. The nanocomposite films were characterized by tensile, differential scanning calorimetry, scanning electron microscopy (SEM), water vapor permeability (WVP), oxygen permeability (OP), X-ray diffraction and light transmittance properties. 3 wt% CLNW-loaded TPS nanocomposite films demonstrated 88 % improvement in the tensile strength as compared to the pristine TPS polymer film; whereas, WVP and OP decreased by 90 and 92 %, respectively, which is highly appreciable compared to the quantity of CLNW added. DSC thermograms of nanocomposite films did not show any significant effect on melting temperature as compared to the pristine TPS. Light transmittance (T r ) value of TPS decreased with increased content of CLNW. Better interaction between CLNW and TPS, caused due to the hydrophilic nature of both the materials, and uniform distribution of CLNW in TPS were the prime reason for the improvement in properties observed at 3 wt% loading of CLNW in TPS. However, CLNW was seen to have formed agglomerates at higher concentration as determined from SEM analysis. These nanocomposite films can have potential use in food and pharmaceutical packaging applications.

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“…Considering chitin in the form of whiskers, CTWs can interact effectively with the substances present in the living tissues, over to their enormous surface area, which is actually the main advantage of CTWs over the usual chitin powder (Siqueira et al 2010). Furthermore, its ability to be hydrolyzed by lysozyme-an enzyme present in the wound-makes chitin releasable from the sponge, permitting to manifest its competence (Fischer et al 2005;Wongpanit et al 2007;Ang-atikarnkul et al 2014). …”

Section: Two-dimensional Cellulose Nanocompositesmentioning

confidence: 96%

Cellulose Acetate Nanocomposites with Antimicrobial Properties

Dobos

Onofrei

Ioan

2015

Advanced Structured Materials

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The chapter overviews recent progress made in the area of cellulose acetate nanocomposites, considering their high-volume applications and easy processing ability. Based on their structural details, the review provides data concerning the manufacturing, characterization, and new developments in this area, with particular emphasis on biomedical applications. Stress is laid on the importance of antimicrobial activity, correlated with different bacteria characteristics, on also considering that their interaction mechanisms create inhibitory effects against microbial growth in a solid medium, and decide their areas of applicability. In this context, the presented aspects show that cellulosic materials can be designed and fine-tuned to acquire certain properties required in different biomedical areas.

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Preparation and characterization of chitin whisker-reinforced silk fibroin nanocomposite sponges

Cited by 99 publications

References 55 publications

Structure and Properties of Chitin Whisker Reinforced Papers for Food Packaging Application

Structure and Properties of Chitin Whisker Reinforced Papers for Food Packaging Application

Preparation of cotton linter nanowhiskers by high-pressure homogenization process and its application in thermoplastic starch

Cellulose Acetate Nanocomposites with Antimicrobial Properties

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