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Special Issue "Polysaccharide Chemistry—a Tool for Novel, Sustainable, and Advanced Products and Materials: A Themed Issue in Honor of Prof. Dr. Thomas Heinze"

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Organic Chemistry".

Deadline for manuscript submissions: 30 November 2020.

Special Issue Editor

Prof. Dr. Pedro Fardim
Website
Guest Editor
Deparment of Chemical Engineering, University of Leuven Celestijnenlaan 200F 3001 Leuven, Belgium; Laboratory of Fibre and Cellulose Technology, Åbo Akademi University, Porthansgatan 3 FI-20500 Turku, Finland
Interests: biomaterials; bionanohydrids; biomass engineering; biostructures; polysaccharides
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

Polysaccharides, fascinating biopolymers and the most common organic compounds on earth, possess amazing molecular and supramolecular structures. Chemical modification, including unconventional methods for the modification of polysaccharides, has opened new avenues to the development of advanced and sustainable materials. Advanced analytical tools have been established to obtain real structure–property relationships.

This Special Issue aims to honour the outstanding contribution of Prof. Thomas Heinze to the field of polysaccharide chemistry and polysaccharide-based materials. Thomas Heinze is a Professor of Organic Chemistry at the Institute of Organic and Macromolecular Chemistry, Friedrich Schiller University of Jena, Germany. From 2010 to 2014, he also worked as a Finland Distinguished Professor at the Åbo Akademi University, Finland. Prof. Heinze has made many contributions to the research of polysaccharides at large, including concepts for polysaccharide chemistry, homogeneous phase reactions, nanostructuring of polysaccharides, and characterization by advanced analytical tools.

Prof. Dr. Pedro Fardim
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • cellulose
  • hemicelluloses
  • nanomaterials

Published Papers (1 paper)

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Research

Open AccessArticle
Hydration/Dehydration Behavior of Hydroxyethyl Cellulose Ether in Aqueous Solution
Molecules 2020, 25(20), 4726; https://doi.org/10.3390/molecules25204726 - 15 Oct 2020
Abstract
Hydroxyethyl cellulose (HeC) maintains high water solubility over a wide temperature range even in a high temperature region where other nonionic chemically modified cellulose ethers, such as methyl cellulose (MC) and hydroxypropylmethyl cellulose (HpMC), demonstrate cloud points. In order to clarify the reason [...] Read more.
Hydroxyethyl cellulose (HeC) maintains high water solubility over a wide temperature range even in a high temperature region where other nonionic chemically modified cellulose ethers, such as methyl cellulose (MC) and hydroxypropylmethyl cellulose (HpMC), demonstrate cloud points. In order to clarify the reason for the high solubility of HeC, the temperature dependence of the hydration number per glucopyranose unit, nH, for the HeC samples was examined by using extremely high frequency dielectric spectrum measuring techniques up to 50 GHz over a temperature range from 10 to 70 °C. HeC samples with a molar substitution number (MS) per glucopyranose unit by hydroxyethyl groups ranging from 1.3 to 3.6 were examined in this study. All HeC samples dissolve into water over the examined temperature range and did not show their cloud points. The value of nH for the HeC sample possessing the MS of 1.3 was 14 at 20 °C and decreased gently with increasing temperature and declined to 10 at 70 °C. The nH values of the HeC samples are substantially larger than the minimum critical nH value of ca. 5 necessary to be dissolved into water for cellulose ethers such as MC and HpMC, even in a high temperature range. Then, the HeC molecules possess water solubility over the wide temperature range. The temperature dependence of nH for the HeC samples and triethyleneglycol, which is a model compound for substitution groups of HeC, is gentle and they are similar to each other. This observation strongly suggests that the hydration/dehydration behavior of the HeC samples was essentially controlled by that of their substitution groups. Full article
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