Chitosan-based smart hybrid materials: a physico-chemical perspective

Cavallaro, Giuseppe; Micciulla, Samantha; Chiappisi, Leonardo

doi:10.1039/d0tb01865a

Cited by 113 publications

(72 citation statements)

References 201 publications

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“…The solubility in acid media contributes to its processability into different forms, like scaffolds, gels, nanofibers, nanoparticles or films, which enables a wide range of applications [2, 3]. Chitosan is normally processed in gels and films and since the last decade, studies concerning the use of this biopolymer in the development of nanocomposites materials has been increased and equating in number to those traditional materials [4, 5].…”

Section: Introductionmentioning

confidence: 99%

Single‐wall carbon nanotubes‐chitosan nanocomposites: Surface wettability, mechanical and thermal properties

Rodrigues

Horn

Martins

et al. 2021

Materialwissenschaft Werkst

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Functionalized single‐wall carbon nanotubes (f‐SWCN) are dispersed in chitosan films by self‐assembly of both components in aqueous media. This carbon form is a promising nanofiller to achieve nanocomposites with refined thermal, mechanical and surface features. In this study, we investigated the influence of functionalized single‐wall carbon nanotubes concentration on the resulting properties of the nanocomposites structures. Functionalized single‐wall carbon nanotubes are dispersed on a molecular scale in the polymeric matrix due to electrostatic interactions between both components. The thermal and mechanical properties have been characterized by thermogravimetric analysis and dynamic mechanical analysis, respectively, while their wettability is studied by water contact angle measurements. Mechanical resistance of the films is improved up to 18 % with the addition of functionalized single‐wall carbon nanotubes, but the thermal stability is expressively reduced. A decrease in the surface hydrophobicity of 25 % is obtained after the inclusion of the nanofiller.

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Section: Introductionmentioning

confidence: 99%

Single‐wall carbon nanotubes‐chitosan nanocomposites: Surface wettability, mechanical and thermal properties

Rodrigues

Horn

Martins

et al. 2021

Materialwissenschaft Werkst

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“…Various nature-based polymers such as polysaccharides (cellulose, chitosan, hyaluronic acid, pectins, alginate, cellulose ethers), proteins (silk fibroin and collagen), and peptides have been identified as promising biomaterials for drug delivery systems given their biocompatibility, processability, and characteristics (e.g., nanoparticles, hydrogels, aerogels, tablets, and so on) that can be regulated by modifying various polymer functional groups such as amino groups, carboxyl groups, and hydroxyl groups [ 4 ]. The current development of these mentioned various polysaccharides, proteins, and peptides for drug delivery systems have been well-reviewed elsewhere [ 4 , 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Nanocelluloses: Sources, Pretreatment, Isolations, Modification, and Its Application as the Drug Carriers

et al. 2021

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The ‘Back-to-nature’ concept has currently been adopted intensively in various industries, especially the pharmaceutical industry. In the past few decades, the overuse of synthetic chemicals has caused severe damage to the environment and ecosystem. One class of natural materials developed to substitute artificial chemicals in the pharmaceutical industries is the natural polymers, including cellulose and its derivatives. The development of nanocelluloses as nanocarriers in drug delivery systems has reached an advanced stage. Cellulose nanofiber (CNF), nanocrystal cellulose (NCC), and bacterial nanocellulose (BC) are the most common nanocellulose used as nanocarriers in drug delivery systems. Modification and functionalization using various processes and chemicals have been carried out to increase the adsorption and drug delivery performance of nanocellulose. Nanocellulose may be attached to the drug by physical interaction or chemical functionalization for covalent drug binding. Current development of nanocarrier formulations such as surfactant nanocellulose, ultra-lightweight porous materials, hydrogel, polyelectrolytes, and inorganic hybridizations has advanced to enable the construction of stimuli-responsive and specific recognition characteristics. Thus, an opportunity has emerged to develop a new generation of nanocellulose-based carriers that can modulate the drug conveyance for diverse drug characteristics. This review provides insights into selecting appropriate nanocellulose-based hybrid materials and the available modification routes to achieve satisfactory carrier performance and briefly discusses the essential criteria to achieve high-quality nanocellulose.

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“…Further, to introduce naturally occurring stabilizers, aiming to improve the stability of the bio-nanocomposite films, the halloysite clay were considered as carrier for vanillic acid and quercetin molecules [ 19 , 20 ]. Therefore, by adding natural compounds, such as halloysite clay and antioxidants, some performance and properties of polysaccharide films [ 21 , 22 , 23 ] can be improved and makeable for numerous challenging applications [ 24 , 25 , 26 ]. HNT is abundant in nature, relative low cost, and in the last few years it was proposed as a biocompatible smart material that can replace carbon nanotubes [ 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Understanding the Effects of Crosslinking and Reinforcement Agents on the Performance and Durability of Biopolymer Films for Cultural Heritage Protection

et al. 2021

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In the last two decades, the naturally occurring polysaccharides, such as chitosan and pectin, have gained great attention having potential applications in different sectors, from biomedical to new generation packaging. Currently, the chitosan and pectic have been proposed as suitable materials also for the formulation of films and coatings for cultural heritage protection, as well as packaging films. Therefore, the formulation of biopolymer films, considering only naturally occurring polymers and additives, is a current challenging trend. This work reports on the formulation of chitosan (CS), pectin (PC), and chitosan:pectin (CS:PC) films, also containing natural crosslinking and reinforcement agents, such as citric acid (CA) and halloysite nanotubes (HNT), through the solvent casting technique. The produced films are characterized through water contact angle measurements, infrared and UV–visible spectroscopy and tensile test, while the durability of the CS:PC films is evaluated subjecting the film to accelerated UVB exposure and monitoring the photo-oxidation degradation in time though infrared spectroscopy. All obtained results suggest that both crosslinking and reinforcement agents have beneficial effects on the wettability, rigidity, and photo-oxidation resistance of biopolymer films. Therefore, these biopolymer films, also containing naturally occurring additives, have good properties and performance and they are suitable as coverage films for cultural heritage protection.

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Chitosan-based smart hybrid materials: a physico-chemical perspective

Abstract: Chitosan is one of the most studied cationic polysaccharides, due to its unique characteristics which makes this macromolecules highly attractive for a broad range of applications. In addition, its complex...

Cited by 113 publications

References 201 publications

Single‐wall carbon nanotubes‐chitosan nanocomposites: Surface wettability, mechanical and thermal properties

Single‐wall carbon nanotubes‐chitosan nanocomposites: Surface wettability, mechanical and thermal properties

Nanocelluloses: Sources, Pretreatment, Isolations, Modification, and Its Application as the Drug Carriers

Understanding the Effects of Crosslinking and Reinforcement Agents on the Performance and Durability of Biopolymer Films for Cultural Heritage Protection

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