Acetylated cellulose nanostructures as reinforcement materials for PBAT nanocomposites

Abstract

Acetylated‐cellulose nanostructures (CNS) were used as reinforcing agent to develop poly(butylene adipate‐co‐terephthalate)—PBAT—nanocomposites with 1, 3, 5, and 10 wt% of modified and nonmodified nanoparticles through solvent casting. This study explains the interactions between the reactive groups CNS and PBAT interact and the influence of this interaction in the mechanical and thermal properties of the composites. The nonmodified CNS showed a noncontinuous increase in the PBAT stiffness, due to the low interaction between the reinforcement and the matrix and low CNS dispersion. The best results were obtained to acetylated CNS due to the intermolecular interactions between the acetyl groups and the polymer chains. Probably the acetyl groups interfered in the atomic vibration relative to the functional groups of the matrix, which is indicative of the interaction and enhancement of the internal cohesion of the components.

Advances in Bio-Based and Biodegradable Polymeric Composites

“…This is because, if antimicrobial packaging is made from a combination of antimicrobial agents and materials that are based on renewable raw materials, it may accelerate the biodegradation process and further stabilize the ecosystem balance. These results suggest that antimicrobial packaging is not only able to show the ability of controlling the growth of microorganisms and prolonging the shelf life of food, which is very important in food safety, but also has a positive effect on the environment [129]. Many studies have been conducted on the mechanism of silver nanoparticles as an active packaging ingredient in packaging [53,55,58,[133][134][135][136][137][138][139].…”

“…Bacterial or microbial cellulose has gained attention for humidity sensor use over the last decade [118,119,[128][129][130][131][132][133][134][135][136]. This type of cellulose is derived from the bacteria cultivated under appropriate conditions.…”

“…For instance, H. Kim et al [128] produced PANI/BC composites with a conductivity that reached 0.02 S/cm, which is almost 10 to 10 4 times greater than the same value of PANI/CHT composites [77,87,92]. In another study, Alonso et al [129] also compared the electrical conductivity of PANI/BC membranes synthesized via in situ and ex situ polymerization. The authors concluded that in situ polymerization favored composites with higher PANI contents, leading to materials with higher conductivity.…”

Modification of Cellulose Micro- and Nanomaterials to Improve Properties of Aliphatic Polyesters/Cellulose Composites: A Review

“…In the case of cellulose micro- and nanomaterials, the esterification is the second most popular method after adsorption [ 129 , 130 , 131 , 132 , 133 ]. Some of the selected studies are summarized in Table 4 .…”

Preparation of treelike and rodlike carboxymethylated nanocellulose and their effect on carboxymethyl cellulose films

“…20,21 Likewise, studies have shown that CNFs with large aspect ratio exhibit a potential in polymer enhancement. [22][23][24] Neto et al used CNCs as a reinforcing material in CMC matrix, and pointed out that the mechanical properties and thermal stability of composite films were apparently improved. 14 Later, Oun et al isolated CNFs from cotton linter pulp and evaluated the effect on CMC films, demonstrating that the tensile strength (TS) and elastic modulus (EM) of CMC film were improved by 23% and 27%, respectively.…”