Top-down fabrication of biodegradable multilayer tunicate cellulose films with controlled mechanical properties

Abstract

Owing to non-degradable waste plastics caused serious environmental pollution, development of natural polymeric materials has become an important topic. Herein, multilayer tunicate cellulose lms (MTCFs) were fabricated by a top-down approach, where the alkali treated mantles of tunicate were layer-by-layer hot-pressed. Strong hydrogen bonds that formed between tunicate cellulose layers resulted in good interfacial compatibility of multilayer lms. The as-prepared MTCFs exhibited improved thermal stabilities, excellent mechanical properties, and good degradability in natural soil. This work provided a top-down approach for the preparation of biodegradable multilayer lms as packaging materials.

Finite Element Analysis of Strengthening Mechanism of Ultrastrong and Tough Cellulosic Materials

“…However, this bottom-up assembly method has some intrinsic drawbacks including (1) cellulose-derived materials’ isolation is chemical–energy intensive; (2) the assembly process is time-consuming and laborious and complicated; (3) the products are usually on a small scale and hard to transfer to bulk materials. Recently, a top-down recombination method has been adapted to fabricate large-scale cellulosic structural materials due to their natural disadvantages of aligned nanocellulose structure [ 25 , 26 , 27 , 28 , 29 , 30 ]. During the fabrication process, some kinds of organic (epoxy, phenolic resin, etc.)…”

Interfacial Effects of Plasticizers On The Properties of Cellulose Diacetate Materials

“…Cellulose is the quintessential sustainable resource and the most abundant natural polymer on the earth (Cheng et al 2016;Huang et al 2021;Peng et al 2020) and has attracted much attention due to its unique derivable structure and biodegradability (Schurz 1999;Wang et al 2017). Cellulose diacetate (CDA) as an important cellulose ester is available at industrial scale (Rustemeyer 2004;Simon et al 1998;Wang et al 2018), and usually applied for manufacturing CDA fiber through wet spinning process from its acetone solution (Cho et al 2013;Edgar et al 2001).…”