Next Article in Journal
Hydrophobically Functionalized Poly(Acrylic Acid) Comprising the Ester-Type Labile Spacer: Synthesis and Self-Organization in Water
Previous Article in Journal / Special Issue
Synthesis, Characterization and Sorption Capacity Examination for a Novel Hydrogel Composite Based on Gellan Gum and Graphene Oxide (GG/GO)
Open AccessArticle

Biopolymer-Based Hybrids as Effective Admixtures for Cement Composites

1
Institute of Building Engineering, Faculty of Civil and Transport Engineering, Poznan University of Technology, Piotrowo 3, PL-60965 Poznan, Poland
2
Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965 Poznan, Poland
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(5), 1180; https://doi.org/10.3390/polym12051180
Received: 25 April 2020 / Revised: 18 May 2020 / Accepted: 18 May 2020 / Published: 21 May 2020
In the framework of this publication, silica-lignin hybrid materials were designed, obtained, characterized and then used as admixtures for cement composites. High-energy mechanical grinding of individual components was used to produce the systems that allowed ensuring adequate homogeneity of the final products. As a result of the analysis of Fourier transform infrared spectroscopy, it has been confirmed that weak physical interactions occur between the components. This allowed classifying the resulting systems as I class hybrid materials. In addition, the efficiency of obtaining final products was also inferred on the basis of obtained porous structure parameters and colorimetric data. The achieved bio-admixture with different weight ratios of silica and lignin was added to cement pastes in the amount ranging from 0.5 to 1 wt.%. The study showed that increasing the ratio of lignin in the admixture from 0.15 to 1 wt.% had a positive effect on the rheological properties of the pastes, while the mechanical properties of the composite were deteriorated. In turn, a higher amount of silica in the admixture acted in reverse. The most favorable results were obtained for a silica-lignin bio-admixture with a weight ratio of components equal to 5:1 wt./wt. A significant increase in compressive strength was gained at satisfactory plasticity of the paste. View Full-Text
Keywords: cement composites; admixtures; biopolymers; lignin-based hybrid materials; dispersive and mechanical properties cement composites; admixtures; biopolymers; lignin-based hybrid materials; dispersive and mechanical properties
Show Figures

Graphical abstract

MDPI and ACS Style

Ślosarczyk, A.; Klapiszewska, I.; Jędrzejczak, P.; Klapiszewski, Ł.; Jesionowski, T. Biopolymer-Based Hybrids as Effective Admixtures for Cement Composites. Polymers 2020, 12, 1180.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop