Hot-mould foaming of modified hemicelluloses and hydroxypropyl methylcellulose

Karlsson, Kristina, 1988 (author): Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden

Nylander, Filip, 1986 (author): Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden

Stading, Mats, 1962 (author): RISE,Jordbruk och livsmedel,Chalmers University of Technology, Sweden

Westman, Gunnar, 1964 (author): Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden

Rigdahl, Mikael, 1950 (author): Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden

(creator_code:org_t)

2019-08-01
2019
English.
In: Journal of Polymer Research. - : Springer Science and Business Media LLC. - 1572-8935 .- 1022-9760. ; 26:8

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Abstract Subject headings

Plastics are a material group which have revolutionized the materials industry during the past century. However, the often fossil origin and littering of the material is problematic. Therefore, this study aims at exploring natural polymers, such as cellulose derivatives and hemicelluloses from different botanical origins, and demonstrate the possibility to use these polymers in a foaming application. The hemicelluloses were chemically treated in order to enhance their performance and foams with ratios as high as 4:1 of hemicellulose and the cellulose derivative, respectively, were successfully produced by a hot-mould foaming technique. The foams were found to be thermally stable up to about 280 degrees C. The chemical modifications were confirmed by Fourier transform infrared (FTIR) spectra and the foams were evaluated with regard to their liquid absorption capacity as well as their density. After 1 min the best foam absorbed 12.5 g/g of liquid and after 30 min soak time and centrifugation the foams had absorption capacities between 2 and 5 g/g. All foams exhibited densities below 0.1 g/cm(3). In both the absorption test and density evaluation, the foams produced from mainly hemicellulose performed in a similar way as the reference foams based only on the cellulose derivative, which is considered an impressive result since cellulose is often reported to have superior properties to hemicelluloses.

NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)

By the author/editor: Karlsson, Kristi ...; Nylander, Filip, ...; Lundman, Malin; Berta, Marco; Stading, Mats, 1 ...; Westman, Gunnar, ...; show more...; Rigdahl, Mikael, ...; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Polymer Chemistr ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Chemical Enginee ...; and Polymer Technolo ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Composite Scienc ...

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