Cellulose nanocrystals (CNCs) using different cellulose polymorphs have been fabricated from raw bamboo pulp. Their structural and morphological effects on the mechanical, barrier thermal properties of poly(lactic acid) investigated.

This article demonstrates the synthesis of lactic acid oligomer-grafted-chitosan (OLLA-g-CH), a nanoamphiphilic molecule, by in situ condensation polymerization and its effective use as nanofiller for improvement multiple properties poly(lactic acid) (PLA) films, essential stringent food packaging applications. Fourier transform infrared spectroscopy (FTIR) analysis shows presence amide-ester bond at 1539 cm–1, which confirms structural grafting OLLA chains with chitosan molecules. OLLA-g-CH...

This article reports the fabrication of poly (3-hydroxybutyrate) (PHB)/cellulose nanocrystal (CNC) based nanobiocomposite films with improved gas barrier and migration properties for food packaging applications. Acid hydrolysis cellulose pulp from bamboo (Bambusabalcooa) yields CNCs diameter 15–20 nm length 400–600 nm. Evaluation d-spacing using XRD indicates intercalation PHB matrix CNC at optimum loadings 2 wt%. Overall values in presence both polar nonpolar simulants are found within...

This paper reports a single-step co-precipitation method for the fabrication of magnetic cellulose nanocrystals (MGCNCs) with high iron oxide nanoparticle content (∼51 wt % loading) adsorbed onto (CNCs). X-ray diffraction (XRD), Fourier transform infrared (FTIR), and Raman spectroscopic studies confirmed that hydroxyl groups on surface CNCs (derived from bamboo pulp) acted as anchor points adsorption Fe3O4 nanoparticles. The fabricated MGCNCs have moment, which is utilized to orient...

In this study, we successfully demonstrate single-step industrially scalable reactive extrusion of polylactic acid (PLA)/cellulose nanocrystal (CNC)-based cast films which leads to reduced necking, improved processability, melt strength, and rheological behavior. PLA chains grafted onto CNCs, formed cross-linked gel-like structures high molecular weight (Mw ≈ 150–245 kDa), with varying grafting efficiency (14%–67%) or gel-fraction yield (16%–69%), depending on the type compatibilizers used....

Pineapple is a tropical fruit that the most economically significant member of Bromeliaceae family are rich in flavonoids, phenolic acids, and antioxidants, which protect human cells from free radicals known to cause chronic diseases. However, short postharvest shelf-life limits its long-distance distribution consumption. Chitosan positively charged polysaccharide consisting N-acetyl d-glucosamine units can be used as promising sustainable biopolymer for active coating fruit. In this work,...

This study presents the development of poly(lactic acid) (PLA)-based biocomposite films incorporating algal cellulose nanocrystals (CNC) and curcumin (CUR) using a customized solution casting machine, where CUR serves as bioactive agent. Two different types biocomposites were fabricated with without CUR, aiming to investigate impact varying CNC concentrations (0, 0.5, 1, 2 wt %) while maintaining constant concentration %. The overall specific migration (OM SM) was performed aqueous food...

This work presents a facile, solvent-free approach for the fabrication of PLA biocomposites, followed by melt extrusion process to prepare stereocomplex films with excellent thermomechanical and gas barrier properties. The presence crystallites improves thermal properties polylactic acid (PLA); however, formation is predominantly lesser compared homocrystallites in case high molecular weight poly(l-lactic acid) poly(d-lactic blend. Grafting biofillers polymer matrix chains may help...

The current work focuses on the fabrication of high-molecular-weight stereocomplex poly(lactic acid)/nanohydroxyapatite (sPLA/n-HAP)-based bionanocomposite for three-dimensional (3D)-printed orthopedic implants and high-temperature engineering applications. To achieve same, n-HAP is grafted with poly(d-lactic acid) (PDLA) via in situ ring-opening polymerization d-lactide, followed by blending poly(l-lactic (PLLA), which yields sPLA/n-HAP biocomposite improved storage modulus even at...

Nanobiocomposites with balanced mechanical characteristics are fabricated from poly(lactic acid) (PLA)/poly(butylene succinate) (PBS)blend at a weight ratio of 80/20 in association varying concentrations functionalized chitosan (FCH) through reactive extrusion temperature 185 °C. The combined effect FCH and dicumyl peroxide (DCP) showed insignificant change tensile strength remarkable increase % elongation break (∼45%) values. Addition DCP also caused the molecular (Mw ∼ 22%) PLA/PBS/1DFCH...

Rapid postharvest losses and quality deteriorations in pineapple are major challenges to growers handlers. Chitosan-based coatings on fruit surfaces have gained importance recent years enhance shelf life of the fruits. In this study, aloe vera gel was added as a natural antioxidant chitosan-based composite coating containing ZnO nanoparticles. The developed formulation applied surface freshly harvested nanoparticles were used an antimicrobial agent. Coated fruits evaluated for weight loss,...

Mandarin oranges are susceptible to senescence and decay, primarily due postharvest quality loss fungal infections. This study aim develop edible active coatings using carnauba shellac incorporated with carvacrol nanoemulsion (CNE), examine the synergistic effects of coating on parameters shelf-life mandarin during ambient storage. Nanoemulsion average droplet size 348.8 nm was prepared, showing a polydispersity index value 0.211, showed excellent antifungal activities. Five formulations...

Abstract Synthetic, theoretical, and catalysis studies of a cationic functionalized N‐heterocyclic carbene complex silver, namely[{1‐isopropyl‐3‐( N ‐phenylacetamido)imidazol‐2‐ylidene} 2 Ag] + Cl – ( 1b ), is reported. Specifically, was synthesized by the reaction 1‐isopropyl‐3‐( ‐phenylacetamido)imidazolium chloride 1a ) with Ag O in 64 % yield; alkylation 1‐isopropylimidazole ‐phenyl chloroacetamide 90 yield. The molecular structure determined X‐ray diffraction found to be active for...