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Polymers, Volume 10, Issue 4

April 2018 - 121 articles

Cover Story: Chitin deacetylases (CDAs) catalyze the hydrolysis of acetamido groups in GlcNAc residues of chitin, chitosan, and chitooligosaccharides (COS). The deacetylation specificity exhibited by CDAs is diverse, some enzymes being specific for single positions, others showing multiple attacks, processivity or random actions. The “subsite capping model” proposes that specificity is partly governed by a series of dynamic loops that shape the substrate binding cleft, which differ among CDAs on a highly conserved protein core. The structures, specificities, and biotech applications of bacterial and fungal CDAs are reviewed here. View the paper here.
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Articles (121)

  • Article
  • Open Access
27 Citations
5,526 Views
14 Pages

14 April 2018

A new adsorbent was prepared via modified poly(glycidyl methacrylate) with 8-aminoquinoline (AQ-PGMA) for the recovery of Pd(II) from solution. The practical application values of AQ-PGMA, including efficiency, selectivity and reusability for the rec...

  • Article
  • Open Access
32 Citations
7,509 Views
10 Pages

14 April 2018

Can microbial cellulose (MC) be used as a bio-carrier for 1,3-dihydroxy-2-propanone (DHA)? The aim of this study was to examine the possibility of using MC as a biomaterial for DHA transferring into the stratum corneum and inducing changes in skin co...

  • Article
  • Open Access
33 Citations
11,556 Views
13 Pages

14 April 2018

The effect of the chemical structure and functionality of three structurally different thiols on the cross-linking of acrylated epoxidized soybean oil and on the properties of the resulting polymers was investigated in this study. 1,3-Benzenedithiol,...

  • Article
  • Open Access
21 Citations
6,161 Views
16 Pages

Towards More Sustainable Material Formulations: A Comparative Assessment of PA11-SGW Flexural Performance versus Oil-Based Composites

  • Helena Oliver-Ortega,
  • José Alberto Méndez,
  • Rafel Reixach,
  • Francesc Xavier Espinach,
  • Mònica Ardanuy and
  • Pere Mutjé

14 April 2018

The replacement of commodity polyolefin, reinforced with glass fiber (GF), by greener alternatives has been a topic of research in recent years. Cellulose fibers have shown, under certain conditions, enough tensile capacities to replace GF, achieving...

  • Article
  • Open Access
19 Citations
5,770 Views
14 Pages

Synthesis of an Efficient S/N-Based Flame Retardant and Its Application in Polycarbonate

  • Weiqiu Wen,
  • Jianwei Guo,
  • Xi Zhao,
  • Xiong Li,
  • Hongmei Yang and
  • Jem-Kun Chen

14 April 2018

Considering the poor compatibility and water-resistance of sulfonate flame retardants for polycarbonate (PC), an efficient S/N-based flame retardant named 1,3,5,7-tetrakis(phenyl-4-sulfonyl-melamine)adamantane (ASN) has been developed. Fire propertie...

  • Article
  • Open Access
45 Citations
7,441 Views
15 Pages

Comparative Study of Diethylaminoethyl-Chitosan and Methylglycol-Chitosan as Potential Non-Viral Vectors for Gene Therapy

  • Sergei V. Raik,
  • Stanislav Andranovitš,
  • Valentina A. Petrova,
  • Yingying Xu,
  • Jenny Ka-Wing Lam,
  • Gordon A. Morris,
  • Alexandra V. Brodskaia,
  • Luca Casettari,
  • Andreii S. Kritchenkov and
  • Yury A. Skorik

14 April 2018

In this paper, we compared the transfection efficiency and cytotoxicity of methylglycol-chitosan (MG-CS) and diethylaminoethyl-chitosan (DEAE-CSI and DEAE-CSII with degrees of substitution of 1.2 and 0.57, respectively) to that of Lipofectamine (used...

  • Article
  • Open Access
18 Citations
6,419 Views
15 Pages

14 April 2018

Enhancing drug loading efficacy and stability of polymeric micelles remains a grand challenge. Here we develop adamantane-based star copolymers adamantane-[poly(ε-caprolactone)-b-poly(2-(diethylamino)ethyl methacrylate)-b-poly(poly(ethylene glycol) m...

  • Article
  • Open Access
14 Citations
6,933 Views
15 Pages

13 April 2018

In the recent studies on chitosan hydrogels, it was found that understanding both rheological and structural properties plays an important role in their application. Therefore, a combination of two independent techniques was applied to investigate mi...

  • Article
  • Open Access
6 Citations
3,908 Views
10 Pages

13 April 2018

The equilibrium volume of a polyelectrolyte gel results from a balance between the tendency to swell caused by outbound polymer/counterion diffusion along with Coulomb interactions on the one hand; and, on the other, the elastic resilience of the cro...

  • Article
  • Open Access
27 Citations
5,606 Views
15 Pages

Structural Changes of Bagasse dusring the Homogeneous Esterification with Maleic Anhydride in Ionic Liquid 1-Allyl-3-methylimidazolium Chloride

  • Huihui Wang,
  • Wei Chen,
  • Xueqin Zhang,
  • Yi Wei,
  • Aiping Zhang,
  • Shijie Liu,
  • Xiaoying Wang and
  • Chuanfu Liu

13 April 2018

The maleation of bagasse could greatly increase the compatibility between bagasse and composite matrixes, and the percentage of substitution (PS) of bagasse maleates could be regulated in the homogeneous system. However, due to the complicated compon...

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Polymers - ISSN 2073-4360