Development and processing of flame retardant cellulose acetate compounds for foaming applications

Abstract

Cellulose acetate (CA) is a bio-based polymeric material suitable to replace foamed polystyrene (PS) boards in applications for building insulation. Foam boards can be produced by extrusion foaming with physical blowing agents. In addition, the high heat deflection temperature and good mechanical properties (e.g., tensile and compression strength) of CA make it suitable for the injection molding of technical parts. In general, flame retardancy of foamed products is often required in building or electronic applications. This article presents the effects of various flame retardant (FR) additives, process settings, and the calibration of the foam board on flammability, foam morphology, and mechanical properties of extruded CA boards. Different formulations of FR additives and foaming agents were investigated regarding density and morphology of the foamed boards. Furthermore, investigations on foam behavior for foam injection molding with physical blowing agents were conducted. The foamed parts were characterized with regard to their flammability.

Acetylation of Bacterial Cellulose from a Mixture of Palm Flour Liquid Waste and Coconut Water: The Effect of Acetylation Time on Yield and Identification of Cellulose Acetate

“…Cellulose acetate is an organic ester compound derived from cellulose made by the esterification process [7]. Cellulose acetate is produced by reacting cellulose with acetic anhydride (CH3CO)2O, sulfuric acid (H2SO4) catalyst, and acetic acid (CH3COOH) solvent [8].…”

Cross-Linked and Surface-Modified Cellulose Acetate as a Cover Layer for Paper-Based Electrochromic Devices

“…The current environmental pressure, exacerbated by the utilization of fossil-based resources, has led to increased interest in bio-based materials. , Those prepared from cellulose derivatives are of particular interest, given their relatively low cost and facile processing compared to unmodified cellulose, coupled with excellent physicomechanical properties. , The most studied cellulose derivative, cellulose acetate (CA), is obtained from either heterogeneous − or homogeneous reactions. Materials based on CA are attractive because of their solubility in a broad range of solvents, high transparency, relatively low cost, nontoxicity, biodegradability, and biocompatibility .…”

“…This is achieved by considering the following highlights: (1) A commercial paper (PowerCoat for printed electronics) was used here as the substrate in ECD. (2) The ECD was built in a coplanar architecture where both electrodes were printed on the paper substrate.…”