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Emulsion templated cellulosic porous scaffolds of superior oleophilicity

Cellulose (London), 2023-09, Vol.30 (14), p.9047 [Peer Reviewed Journal]

ISSN: 0969-0239 ;ISSN: 1572-882X ;EISSN: 1572-882X ;DOI: 10.1007/s10570-023-05425-z

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  • Title:
    Emulsion templated cellulosic porous scaffolds of superior oleophilicity
  • Author: Kumar, Advitiya ; Kumar, Dheeraj ; Rani, Sweety ; Nandan, Bhanu ; Butola, Bhupendra Singh ; Hakkarainen, Minna ; Srivastava, Rajiv K.
  • Subjects: Adsorption ; Cellulose ; Crosslink ; Emulsion ; Oleophilic ; Porous scaffold
  • Is Part Of: Cellulose (London), 2023-09, Vol.30 (14), p.9047
  • Description: Oil spills and related environmental concerns have been dealt using various approaches including hydrophobic absorbents made of synthetic polymers. Disposal and secondary contamination from such polymeric absorbent however are issues due to non-degradable nature of synthetic polymers. A cellulose based oleophilic porous scaffold for oil sorption is thus fabricated in this work via emulsion templating. Pre-treated wood pulp cellulose based high internal phase emulsion was developed through judicious choice of solvent, emulsifiers, nature and volume fraction of dispersed phase, and crosslinker for cellulose. The scaffold showed a highly interconnected porous structure resulting in an oil sorption capacity up to 8.8 g/g for automobile engine oil (volumetric swelling of 30 ml/ml), matching with some of the previously reported hydrophobically modified cellulosic absorbents. The scaffold showed no structural disintegration or decline in sorption capacity during cyclic sorption-desorption test up to 5 cycles. The oleophilic character was introduced in the scaffold due to high surface area and interconnected macropores acting as microchannels and reservoir for oil sorption without any interaction of the hydrophilic cellulose with the oil. The efficiency of porous scaffold of a natural polymer for oil sorption can further be enhanced via hydrophobic functionalization and other vast applications.
  • Language: English
  • Identifier: ISSN: 0969-0239
    ISSN: 1572-882X
    EISSN: 1572-882X
    DOI: 10.1007/s10570-023-05425-z
  • Source: SWEPUB Freely available online
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