Title Sustainable cross-linkers for the synthesis of cellulose-based aerogels: research and application
Authors Paulauskiene, Tatjana ; Teresiute, Audrone ; Uebe, Jochen ; Tadzijevas, Arturas
DOI 10.3390/jmse10040491
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Is Part of Journal of marine science and engineering.. Basel : MDPI. 2022, vol. 10, iss. 4, art. no. 491, p. 1-14.. eISSN 2077-1312
Keywords [eng] cellulose aerogel ; sorbent ; paper waste ; cross-linker ; oil-spill cleanup ; sorption capacity ; oil/water separation ; oil-retention ability ; reusability
Abstract [eng] Cellulose aerogels with polyester resin as cross-linkers have attracted much attention. This study describes the route to produce a fully bio-based aerogel with high added value from waste paper and starch, cellulose acetate and starch–cellulose acetate mixture as cross-linkers for oil adsorption, instead of the environmentally harmful polyester resin. The manufacturing process is simple, sustainable and cost-efficient, without releasing harmful by-products into the environment. The effects of different cross-linkers on the oil adsorption, dynamic oil retention, reusability and morphology of the aerogels were studied in detail. Experimental results show that these environmentally friendly recycled aerogels have a very low density, i.e., —0.0110–0.0209 g cm−3, and highly porous structures, with a porosity of 96.74–99.18%. The synthesized hydrophobic aerogels showed contact angles of ∼124–129°. The compression moduli are lower than that of an aerogel with polyester as a cross-linker, but the compression modulus of the mixture of starch and cellulose acetate especially shows a higher value than expected. The sorption capacity of the aerogels with bio-based cross-linkers was significantly increased compared to the aerogels with polyester; it is now up to 56 times their own weight. The aerogels also have good oil-retention properties.
Published Basel : MDPI
Type Journal article
Language English
Publication date 2022
CC license CC license description