Graphene oxide reinforced chitosan/polyvinylpyrrolidone polymer bio‐nanocomposites

Abstract

Bio‐nanocomposite films based on chitosan/polyvinylpyrrolidone (CS/PVP) and graphene oxide (GO) were processed using the casting/evaporation technique. It has been found that the three components of bio‐nanocomposites can be easily mixed in controlled conditions enabling the formation of thick films with high quality, smooth surface and good flexibility. Structural and morphological characterizations showed that the GO sheets are well dispersed in the CS/PVP blend forming strong interfacial interactions that provide an enhanced load transfer between polymer chains and GO sheets thus improving their properties. It has been found that the water resistance of the CS/PVP blend is improved, and the hydrolytic degradation is limited by addition of 0.75 and 2 wt % GO. The modulus, strength, elongation and toughness of the bio‐nanocomposites are together increased. Herein, the steps to form new bio‐nanocomposite films have been described, taking the advantage of the combination of CS, PVP and GO to design the aforementioned bio‐nanocomposite films, which allow to have extraordinary properties that would have promising applications as eventual packaging materials. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41042.

Preparation And Properties Of Bionanocomposite Films Reinforced With Nanocellulose Isolated From Moroccan Alfa Fibres

“…The samples used for AFM characterisations were deposited on mica sheets. [37] 2.5.4. Thermogravimetric analysis TGA and derivative thermograms (DTGA) were conducted under nitrogen in Versa Therm apparatus (Thermofisher) with a 20°C/min ramp between 25 and 1000°C.…”

“…[37]. Prepared bionanocomposite films were hermetically sealed in a permeation cell (3.0 × 6.5 × 2.0 cm) that stored at 25°C in desiccators to maintain a 75% RH gradient across the film, silica gel (0% RH) was placed inside the cell, and a sodium chloride (NaCl) saturated solution (75% RH) was used in the desiccators.…”

A high performance nonenzymatic electrochemical glucose sensor based on polyvinylpyrrolidone–graphene nanosheets–nickel nanoparticles–chitosan nanocomposite

“…It was reported that CS and PVP are miscible polymers [38,39] and the carbonyl groups in the pyrrolidone rings of the PVP can form hydrogen bonding with amino and hydroxyl groups in CS [38,40]. Mounir et al [41] reported an interesting work that a new bio-nanocomposite film has been designed by taking advantage of the combination of CS, PVP and graphene oxide (GO). Owing to the strong interfacial interaction between GO, CS and PVP, the bio-nanocomposite film gained great improvements of certain properties, such as water resistance and tensile properties.…”

Bio‐nanocomposite films based on cellulose nanocrystals filled polyvinyl alcohol/chitosan polymer blend

“…Chitosan (CS) is a linear polysaccharide and deacetylated derivative of chitin . This biopolymer is among the most important natural polymers due to its diverse spectrum of applications that range from pharmaceuticals to materials science . However, some obstacles hinder CS's extensive use, particularly, its relatively lower elongation, low toughness properties, high degree of swelling in water, relatively poor water vapor barrier characteristics as well as its high price compared to conventional plastics .…”