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Polymers, Volume 13, Issue 4

February-2 2021 - 193 articles

Cover Story: We tested the antibacterial activity of a lysine-modified cationic dendrimer (CD) against resistant Gram-negative bacteria, and, knowing that guanidine groups and two isomeric triterpenoid acids are active against Gram-positive bacteria, prepared lysine/arginine-modified dendrimers entrapping ursolic and oleanolic acids (UOA), named UOACDs. UOACDs showed significant antibacterial activity against 15 Gram-positive isolates, and it was established that UOA did not contribute to the antibacterial effects observed. Particularly, lysine was critical for the potency, while arginine was critical for redirecting activity against Gram-positive species. A high cationic character with a balanced lysine/arginine content produced remarkable antimicrobial effects (MIC = 0.5–8.7 µM). View this paper.
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Articles (193)

  • Article
  • Open Access
4 Citations
3,701 Views
14 Pages

23 February 2021

Cobalt porphyrins have emerged as promising catalysts for electrochemical and photoelectrochemical applications because of their good performance, low cost and the abundance of cobalt in the earth. Herein, a negatively charged porphyrin meso-tetra-(4...

  • Article
  • Open Access
6 Citations
3,826 Views
18 Pages

Role of Doping Agent Degree of Sulfonation and Casting Solvent on the Electrical Conductivity and Morphology of PEDOT:SPAES Thin Films

  • Daniela Valeria Tomasino,
  • Mario Wolf,
  • Hermes Farina,
  • Gianluca Chiarello,
  • Armin Feldhoff,
  • Marco Aldo Ortenzi and
  • Valentina Sabatini

23 February 2021

Poly(3,4-ethylenedioxythiophene) (PEDOT) plays a key role in the field of electrically conducting materials, despite its poor solubility and processability. Various molecules and polymers carrying sulfonic groups can be used to enhance PEDOT’s electr...

  • Article
  • Open Access
22 Citations
3,390 Views
17 Pages

Development of Antibacterial Protective Coatings Active against MSSA and MRSA on Biodegradable Polymers

  • Iva Rezić,
  • Mislav Majdak,
  • Vanja Ljoljić Bilić,
  • Ivan Pokrovac,
  • Lela Martinaga,
  • Maja Somogyi Škoc and
  • Ivan Kosalec

23 February 2021

In this work the in vitro antimicrobial activity of colloidal solutions of nine different commercially available nanoparticles were investigated against Staphylococcus aureus strains, both methicillin-sensitive (MSSA) and methicillin-resistant (MRSA)...

  • Article
  • Open Access
27 Citations
5,150 Views
25 Pages

Free-Radical Photopolymerization of Acrylonitrile Grafted onto Epoxidized Natural Rubber

  • Rawdah Whba,
  • Mohd Sukor Su’ait,
  • Lee Tian Khoon,
  • Salmiah Ibrahim,
  • Nor Sabirin Mohamed and
  • Azizan Ahmad

23 February 2021

The exploitation of epoxidized natural rubber (ENR) in electrochemical applications is approaching its limits because of its poor thermo-mechanical properties. These properties could be improved by chemical and/or physical modification, including gra...

  • Article
  • Open Access
9 Citations
2,991 Views
21 Pages

23 February 2021

CO2 convective dissolution has been regarded as one of the fundamental mechanisms to accelerate the mass transfer of CO2 into brine. We present a new spectrophotometric method to characterize the convective instability and measure the dissolved CO2 m...

  • Article
  • Open Access
107 Citations
7,618 Views
15 Pages

Morphological and Mechanical Properties of Electrospun Polycaprolactone Scaffolds: Effect of Applied Voltage

  • L.A. Can-Herrera,
  • A.I. Oliva,
  • M.A.A. Dzul-Cervantes,
  • O.F. Pacheco-Salazar and
  • J.M. Cervantes-Uc

23 February 2021

The aim of this work is to investigate the effect of the applied voltage on the morphological and mechanical properties of electrospun polycaprolactone (PCL) scaffolds for potential use in tissue engineering. The morphology of the scaffolds was chara...

  • Article
  • Open Access
24 Citations
5,398 Views
14 Pages

23 February 2021

In this study, a superabsorbent polymer (SAP) comprising poly (IA-co-cellulose-co-VSA-co-AA; ICVA) core-SAP (CSAP) was synthesized through radical polymerization using itaconic acid (IA), acrylic acid (AA), cellulose, and vinyl sulfonic acid (VSA) as...

  • Article
  • Open Access
22 Citations
6,618 Views
17 Pages

Bacterial Cellulose Network from Kombucha Fermentation Impregnated with Emulsion-Polymerized Poly(methyl methacrylate) to Form Nanocomposite

  • Helena Oliver-Ortega,
  • Shiyu Geng,
  • Francesc Xavier Espinach,
  • Kristiina Oksman and
  • Fabiola Vilaseca

23 February 2021

The use of bio-based residues is one of the key indicators towards sustainable development goals. In this work, bacterial cellulose, a residue from the fermentation of kombucha tea, was tested as a reinforcing nanofiber network in an emulsion-polymer...

  • Article
  • Open Access
8 Citations
4,405 Views
11 Pages

Bio-Based Hotmelt Adhesives with Well-Adhesion in Water

  • Xi Yu,
  • Chuang Dong,
  • Wei Zhuang,
  • Dongjian Shi,
  • Weifu Dong,
  • Mingqing Chen and
  • Daisaku Kaneko

23 February 2021

We suggest a simple idea of bio-based adhesives with strong adhesion even under water. The adhesives simply prepared via polycondensation of 3,4-dihydroxyhydrocinnamic acid (DHHCA) and lactic acid (LA) in one pot polymerization. Poly(DHHCA-co-LA) has...

  • Article
  • Open Access
19 Citations
5,033 Views
17 Pages

Development and Characterization of Weft-Knitted Fabrics of Naturally Occurring Polymer Fibers for Sustainable and Functional Textiles

  • Marcela Ferrándiz,
  • Eduardo Fages,
  • Sandra Rojas-Lema,
  • Juan Ivorra-Martinez,
  • Jaume Gomez-Caturla and
  • Sergio Torres-Giner

23 February 2021

This study focuses on the potential uses in textiles of fibers of soy protein (SP) and chitin, which are naturally occurring polymers that can be obtained from agricultural and food processing by-products and wastes. The as-received natural fibers we...

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Polymers - ISSN 2073-4360