Thermo-compression process-mediated in-situ cellulose microfibers phosphorylation enables high performant cellulosic paper packaging

Strong and Flame-Resistant Nanocellulose Sheets Derived from Agrowastes via a Papermaking-Assisted Process

“…This result is quite similar to the previously reported CMF paper from Hemp fibers. 6 The transformation of these fibers into carboxylated and phosphorylated CNFs results in significant reductions of about 98.13 and 98.96%, respectively, indicating improved water barrier characteristics of the elaborated CNF films. This is generally related to the low density observed for CMF compared to that of nanofibrils (see Table S3).…”

“…Water vapor permeability (WVP) is a crucial characteristic in packaging materials, reflecting their capacity to resist water vapor transmission. 6 Consequently, assessing the WVP of these materials yields valuable insights into how alterations in their structure resulting from chemical− mechanical processes impact their ability to permit the passage of water vapor. It is worth noting that the primary mechanism facilitating the transport of water vapor through polymer films, in the presence of a water vapor concentration gradient, arises from vapor adsorption into the polymer material, subsequent diffusion within the film, and eventual desorption of water vapor on the side of the film with lower concentration.…”

“…The widespread utilization of polymeric materials in different sectors of our daily life has prompted extensive scientific endeavors aimed at addressing the inherent susceptibility of these materials to rapid degradation and ignition under heat. − In this regard, considerable attention has been dedicated to developing sustainable materials suitable for a broad spectrum of uses because of the pressing necessity for social and economic progress. , The surging enthusiasm for biobased polymers can be attributed to their impressive properties and performance, closely matching those typically associated with petroleum-based polymers …”

“…The utilization of this biopolymer as a chemical feedstock began only around 170 years ago with the discovery of the first cellulose derivative (cellulose nitrate) by Braconnot . Cellulose stands as the predominant biopolymer in the plant kingdom, with an estimated annual biosynthesis production reaching 10 11 tons. , Its microfibrillar structure also makes it a critical load-bearing component in plant cell walls, boasting its Young’s modulus and tensile strength that surpass values of most commonly used synthetic fiber-forming polymers . Cellulose is found as a structural component in plant and certain algae cell walls as well as in biofilms secreted by bacteria.…”

“…Incorporating phosphorus chemistry alongside biomacromolecules is a compelling area of study due to its potential to turn into sustainable resources with built-in fire-resistant qualities. , The use of phosphate derivatives with cellulose has a long history dating back to 1930 . Various studies have explored this process, employing diverse organic solvents and different phosphorus agents .…”