Advanced Natural Polymers

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Biomacromolecules, Biobased and Biodegradable Polymers".

Deadline for manuscript submissions: closed (15 December 2023) | Viewed by 4444

Special Issue Editors

National Research and Development Institute for Industrial Ecology ECOIND, Street Podu Dambovitei no. 57-73, district 6, 060652 Bucharest, Romania
Interests: environmental bioremediation; ion exchange equilibrium; experimental model; modified maize stalk; biomass; biopolymers; biodegradation; green adsorbents; biopolymers for water remediation; biorecovery; biotechnology; bioproducts; sustainable technologies; cellulose; hemicelulose; lignin
Department of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bucharest, Romania
Interests: alginate; cellulose; collagen; keratin; biopolymers; gamma irradiation; functionalisation; natural polymers; biosorbent; advanced materials
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Special Issue Information

Dear Colleagues, 

With digital transformation and energy transition in progress, the goals of sustainability, circular economy and net zero became more stringent than ever for the post-modern, knowledge-based society. Thus, the search for renewable, biodegradable, biocompatible, cheap and at the same time advanced polymers is still a hot topic. Natural polymers are promising candidates for obtaining advanced materials through functionalization for agriculture, electronics, automotive, medical, building, clothing and environmental applications. One of the most interesting application is the conversion of agricultural waste to bioproducts and advanced materials of use in various field and especially for metallic ion retention in wastewater treatment. Natural polymer research made important progress in recent years grace to the advancement of modern structural investigation tools and development of green synthetic methods as well as of nanotechnologies. The structure-properties-activity relationship allows an accurate identification of polysaccharide and/or polypeptide source polymer to obtain a target material with superior properties: antimicrobial, mechanical, conductive, adsorptive, etc. Modified natural polymers such as cellulose, keratin, collagen, lignin, alginate, etc, treated with chemicals, nanocomposites and/or physical methods, electrodeposition, plasma, irradiation, etc are key subjects of this special issue.

Dr. Nicoleta Mirela Marin
Dr. Ioana Stanculescu
Guest Editors

Manuscript Submission Information

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Keywords

  • cellolose materials
  • collagen materials
  • biosorbents for wastewater treatment
  • natural polymer functionalisation
  • biopolymers
  • polymer technology

Published Papers (2 papers)

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Research

19 pages, 4779 KiB  
Article
Bioactivity and Thermal Stability of Collagen–Chitosan Containing Lemongrass Essential Oil for Potential Medical Applications
Polymers 2022, 14(18), 3884; https://doi.org/10.3390/polym14183884 - 17 Sep 2022
Cited by 4 | Viewed by 1673
Abstract
Bioactive collagen–chitosan–lemongrass (COL–CS–LG) membranes were prepared by casting method and analyzed for potential biomedical applications. For COL–CS–LG membranes, LG essential oil release, antioxidant properties, in vitro cytotoxicity and antimicrobial assessments were conducted, as well as free radical determination after gamma irradiation by chemiluminescence, [...] Read more.
Bioactive collagen–chitosan–lemongrass (COL–CS–LG) membranes were prepared by casting method and analyzed for potential biomedical applications. For COL–CS–LG membranes, LG essential oil release, antioxidant properties, in vitro cytotoxicity and antimicrobial assessments were conducted, as well as free radical determination after gamma irradiation by chemiluminescence, and structural characteristics analysis through Attenuated Total Reflection–Fourier Transform Infrared Spectroscopy (ATR–FTIR) and Differential Scanning Calorimetry (DSC). The evaluation of non-isothermal chemiluminescence after gamma radiation exposure to COL–CS–LG membranes revealed a slowing down of the oxidation process at temperatures exceeding 200 °C, in correlation with antioxidant activity. Antimicrobial properties and minimum inhibitory concentrations were found to be in correlation with cytotoxicity limits, offering the optimum composition for designing new biomaterials. Full article
(This article belongs to the Special Issue Advanced Natural Polymers)
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14 pages, 4280 KiB  
Article
Natural and Synthetic Polymers Modified with Acid Blue 113 for Removal of Cr3+, Zn2+ and Mn2+
Polymers 2022, 14(11), 2139; https://doi.org/10.3390/polym14112139 - 24 May 2022
Cited by 7 | Viewed by 1577
Abstract
This research had two stages of development: during the first stage, the purpose of the research was to evaluate the adsorption properties of the natural polymer represented by shredded maize stalk (MS) and by Amberlite XAD7HP (XAD7HP) acrylic resin for removal of toxic [...] Read more.
This research had two stages of development: during the first stage, the purpose of the research was to evaluate the adsorption properties of the natural polymer represented by shredded maize stalk (MS) and by Amberlite XAD7HP (XAD7HP) acrylic resin for removal of toxic diazo Acid Blue 113 (AB 113) dye from aqueous solutions. The AB 113 concentration was evaluated spectrometrically at 565 nm. In the second stage, the stability of MS loaded with AB 113 (MS-AB 113) and of XAD7HP loaded with AB 113 (XAD7HP-AB 113) in acidic medium suggests that impregnated materials can be used for selective removal of metal ions (Cr3+, Zn2+ and Mn2+). The metal ions using atomic absorption spectroscopy method (AAS) were determined. The use of MS-AB 113 ensures a high selectivity of divalent ions while the XAD7HP-AB 113 had excellent affinity for Cr3+ in the presence of Zn2+ and Mn2+. As a consequence, two advanced polymers, i.e., MS-AB 113 and XAD7HP-AB 113 that provide huge capacity for removal of Zn2+, Mn2+ and Cr3+ from acid polluted wastewater were obtained. Full article
(This article belongs to the Special Issue Advanced Natural Polymers)
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