Lecture demonstrations with the newer types of plastics

Davis, R. Elbert; Biby, James E.; Brantley, L. Reed

doi:10.1021/ed028p654

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“…Ethyl cellulose is a thermoplastic polymer, currently used as thin-film coating material and as a food additive. It is fabricated by treating about twothirds of the hydroxyl groups of the cellulose molecule with sodium hydroxide and then etherifying with ethyl chloride (Davis et al 1951). Hydroxyalkylcelluloses are water-soluble cellulose derivatives, with a delicate balance between hydrophobic and hydrophilic interactions inside the molecule, which provide an associative behaviour of these molecules in water (Porsch et al 1997).…”

Section: Structure and Morphology Of Cellulosesmentioning

confidence: 99%

Cellulosic materials as biopolymers and supercritical CO₂as a green process: chemistry and applications

Medina-González

Camy

Condoret

2012

International Journal of Sustainable Engineering

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao. In this review, we describe the use of supercritical CO 2 (scCO 2 ) in several cellulose applications. The focus is on different technologies that either exist or are expected to emerge in the near future. The applications are wide from the extraction of hazardous wastes to the cleaning and reuse of paper or production of glucose. To put this topic in context, cellulose chemistry and its interactions with scCO 2 are described. The aim of this study was to discuss the new emerging technologies and trends concerning cellulosic materials processed in scCO 2 such as cellulose drying to obtain aerogels, foams and other microporous materials, impregnation of cellulose, extraction of highly valuable compounds from plants and metallic residues from treated wood. Especially, in the bio-fuel production field, we address the pre-treatment of cellulose in scCO 2 to improve fermentation to ethanol by cellulase enzymes. Other reactions of cellulosic materials such as organic inorganic composites fabrication and de-polymerisation have been considered. Cellulose treatment by scCO 2 has been discussed as well. Finally, other applications like deacidification of paper and cellulosic membranes fabrication in scCO 2 have been reviewed. Examples of the discussed technologies are included as well.

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Section: Structure and Morphology Of Cellulosesmentioning

confidence: 99%

Cellulosic materials as biopolymers and supercritical CO₂as a green process: chemistry and applications

Medina-González

Camy

Condoret

2012

International Journal of Sustainable Engineering

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Lecture demonstrations with the newer types of plastics

Abstract: The types of thermoplastic and thermosetting resins examined include Thiokol, polyvinyl chloride, phenol formaldehyde, styrene polyesters, ethyl cellulose, and polymethyl methacrylate.

Cited by 1 publication

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Cellulosic materials as biopolymers and supercritical CO₂as a green process: chemistry and applications

Cellulosic materials as biopolymers and supercritical CO₂as a green process: chemistry and applications

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Lecture demonstrations with the newer types of plastics

Abstract: The types of thermoplastic and thermosetting resins examined include Thiokol, polyvinyl chloride, phenol formaldehyde, styrene polyesters, ethyl cellulose, and polymethyl methacrylate.

Cited by 1 publication

References 0 publications

Cellulosic materials as biopolymers and supercritical CO2as a green process: chemistry and applications

Cellulosic materials as biopolymers and supercritical CO2as a green process: chemistry and applications

Contact Info

Product

Resources

About

Cellulosic materials as biopolymers and supercritical CO₂as a green process: chemistry and applications

Cellulosic materials as biopolymers and supercritical CO₂as a green process: chemistry and applications