Biodegradability, physical, mechanical and antimicrobial attributes of starch nanocomposites containing chitosan nanoparticles

Babaee, Mehran; Garavand, Farhad; Rehman, Abdur; Jafarazadeh, Shima; Amini, Elahe; Cacciotti, Ilaria

doi:10.1016/j.ijbiomac.2021.11.162

Cited by 80 publications

(39 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can also be noted that the complex modulus values of RCDs are higher than CAS–HMP (e.g., 825 mPa compared to 200 mPa of CAS–HMP at 25 °C), demonstrating a more elaborate molecular structure formed by the chemical bonds of the polymers and the high concentration of gCDs. An increase in the Young modulus (E) was also observed by Babaee et al [ 31 ] in starch films reinforced with chitosan nanoparticles. The biopolymer films analyzed in this study tended to lose their structure (lower E* values) at temperatures above 30 °C, when the relative humidity was over 50%.…”

Section: Resultssupporting

confidence: 68%

High Methoxyl Pectin and Sodium Caseinate Film Matrix Reinforced with Green Carbon Quantum Dots: Rheological and Mechanical Studies

et al. 2022

View full text Add to dashboard Cite

Nowadays, proteins and polysaccharides play a fundamental role in the manufacturing of biocompatible materials applied in food packaging. The resulting films have, however, limits associated with the resistance to mechanical stress; therefore, it is important to reinforce the initial mixture with additives that promote the development of stronger molecular links. Carbon dots (CDs) are excellent candidates for this purpose due to the presence of surface functional groups that determine the formation of numerous intramolecular bonds between the charged biopolymers. The present research aims to evaluate the effect of CDs on the mechanical properties of biopolymer films obtained from sodium caseinate (CAS), high methoxyl pectin (HMP) and glycerol used as plasticizers. Green carbon dots (gCDs) were obtained from natural organic sources by green synthesis. The effects of gCDs on the flow behavior and viscoelastic properties of mixed biopolymer dispersions and the thermophysical properties of the corresponded films were evaluated by steady and unsteady shear rheological measurements and differential scanning calorimetry (DSC) tests, respectively. The dynamic mechanical measurements were realized taking into account the parameters of temperature and relative humidity. The results indicate a significant change in the viscosity of the protein–polysaccharide dispersions and the thermomechanical properties of the corresponding film samples reinforced with higher amounts of gCDs.

show abstract

Section: Resultssupporting

confidence: 68%

High Methoxyl Pectin and Sodium Caseinate Film Matrix Reinforced with Green Carbon Quantum Dots: Rheological and Mechanical Studies

et al. 2022

View full text Add to dashboard Cite

show abstract

“…3HH content, melting point 126 • C, density 1.19 g/cm 3 ). The solvent 2,2,2trifluoroethanol (TFE) (synthesis grade, density 1.389 g/cm 3 ) was acquired from Sigma-Aldrich S.A. (Madrid, Spain) and used for polarized optical microscopy (POM)-sample preparation. Purified alpha-cellulose fiber, grade TC40 (cellulose content > 99.6%) from CreaFill Fibers Corp. (Chestertown, MD, USA), was used as the reference material for the marine-biodegradation test.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, food-packaging products result in a considerable and continuous source of domestic plastic waste. Plastic materials generally exhibit high chemical stability and inertness, both characteristics of interest in the packaging sector, but this, in turn, results in a high permanence and accumulation of their residues, thus rendering an environmental problem when they are not correctly managed [3][4][5]. In this regard, the plastic-pollution concern has led to authorities implementing restrictive policies and regulations for banning single-use products and bags [5,6].…”

Section: Introductionmentioning

confidence: 99%

Development and Characterization of Fully Renewable and Biodegradable Polyhydroxyalkanoate Blends with Improved Thermoformability

et al. 2022

View full text Add to dashboard Cite

Poly(3-hydroxybutyrate-co-3-valerate) (PHBV), being one of the most studied and commercially available polyhydroxyalkanoates (PHAs), presents an intrinsic brittleness and narrow processing window that currently hinders its use in several plastic applications. The aim of this study was to develop a biodegradable PHA-based blend by combining PHBV with poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH), another copolyester of the PHA family that shows a more ductile behavior. Blends of PHBV with 20% wt., 30% wt., and 40% wt. of PHBH were obtained by melt mixing, processed by cast extrusion in the form of films, and characterized in terms of their morphology, crystallization behavior, thermal stability, mechanical properties, and thermoformability. Full miscibility of both biopolymers was observed in the amorphous phase due to the presence of a single delta peak, ranging from 4.5 °C to 13.7 °C. Moreover, the incorporation of PHBH hindered the crystallization process of PHBV by decreasing the spherulite growth rate from 1.0 µm/min to 0.3 µm/min. However, for the entire composition range studied, the high brittleness of the resulting materials remained since the presence of PHBH did not prevent the PHBV crystalline phase from governing the mechanical behavior of the blend. Interestingly, the addition of PHBH greatly improved the thermoformability by widening the processing window of PHBV by 7 s, as a result of the increase in the melt strength of the blends even for the lowest PHBH content.

show abstract

“…A starchbased film was created and coated with chitosan nanoparticles for antibacterial activity against E. coli and S. aureus. Additionally, mechanical, morphological, and biodegradable characteristics were enhanced [60].…”

Section: Antibacterial Activitiesmentioning

confidence: 99%

Chitosan: A Sustainable Material for Multifarious Applications

et al. 2022

View full text Add to dashboard Cite

Due to the versatility of its features and capabilities, chitosan generated from marine crustacean waste is gaining importance and appeal in a wide variety of applications. It was initially used in pharmaceutical and medical applications due to its antibacterial, biocompatible, and biodegradable properties. However, as the demand for innovative materials with environmentally benign properties has increased, the application range of chitosan has expanded, and it is now used in a variety of everyday applications. The most exciting aspect of the chitosan is its bactericidal properties against pathogens, which are prevalent in contaminated water and cause a variety of human ailments. Apart from antimicrobial and water filtration applications, chitosan is used in dentistry, in water filtration membranes to remove metal ions and some heavy metals from industrial effluents, in microbial fuel cell membranes, and in agriculture to maintain moisture in fruits and leaves. It is also used in skin care products and cosmetics as a moisturizer, in conjunction with fertilizer to boost plant immunity, and as a bi-adhesive for bonding woods and metals. As it has the capacity to increase the life span of food items and raw meat, it is an unavoidable component in food packing and preservation. The numerous applications of chitosan are reviewed in this brief study, as well as the approaches used to incorporate chitosan alongside traditional materials and its effect on the outputs.

show abstract

Biodegradability, physical, mechanical and antimicrobial attributes of starch nanocomposites containing chitosan nanoparticles

Cited by 80 publications

References 45 publications

High Methoxyl Pectin and Sodium Caseinate Film Matrix Reinforced with Green Carbon Quantum Dots: Rheological and Mechanical Studies

High Methoxyl Pectin and Sodium Caseinate Film Matrix Reinforced with Green Carbon Quantum Dots: Rheological and Mechanical Studies

Development and Characterization of Fully Renewable and Biodegradable Polyhydroxyalkanoate Blends with Improved Thermoformability

Chitosan: A Sustainable Material for Multifarious Applications

Contact Info

Product

Resources

About