Browsing 2023 by Author "Ungureanu, Elena"

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  • Cellulose-Based Metallogels—Part 1: Raw Materials and Preparation 
    Mikhailidi, Aleksandra; Volf, Irina; Belosinschi, Dan; Tofanică, Bogdan-Marian; Ungureanu, Elena (MDPI, 2023-05-08)
    Metallogels are a class of materials produced by the complexation of polymer gels with metal ions that can form coordination bonds with the functional groups of the gel. Hydrogels with metal phases attract special attention ...
  • Cellulose-Based Metallogels—Part 2: Physico-Chemical Properties and Biological Stability 
    Mikhailidi, Aleksandra; Volf, Irina; Belosinschi, Dan; Tofanică, Bogdan-Marian; Ungureanu, Elena (MDPI, 2023-08-07)
    Metallogels represent a class of composite materials in which a metal can be a part of the gel network as a coordinated ion, act as a cross-linker, or be incorporated as metal nanoparticles in the gel matrix. Cellulose is ...
  • Comparison Adsorption of Cd (II) onto Lignin and Polysaccharide-Based Polymers 
    Ungureanu, Elena; Fortună, Maria-Emiliana; Țopa, Denis-Constantin; Brezuleanu, Carmen-Olguța; Ungureanu, Vlad; Chiruță, Ciprian; Rotaru, Răzvan; Tofanică, Bogdan-Marian; Popa, Valentin I.; Jităreanu, Carmenica-Doina (MDPI, 2023-09-17)
    Given the predominantly negative impact of heavy metals on living organisms, the present study proposed to evaluate the adsorption performances under static conditions of Cd (II) from aqueous solutions on unmodified Sarkanda ...
  • Design of Functional Polymer Systems to Optimize the Filler Retention in Obtaining Cellulosic Substrates with Improved Properties 
    Ungureanu, Elena; Fortună, Maria-Emiliana; Țopa, Denis-Constantin; Lobiuc, Andrei; Ungureanu, Ovidiu C.; Jităreanu, Carmenica-Doina (MDPI, 2023-02-25)
    In the present work, the possibility of increasing the calcium carbonate (CaCO3) content in sheets of paper to optimize their properties was investigated. A new class of polymeric additives for papermaking is proposed as ...