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Molecules
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Cellulose Nanomaterials—Recent Advances in Membranes, Films, and Coatings
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Cellulose Nanomaterials—Recent Advances in Membranes, Films, and Coatings

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

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 1771

Special Issue Editor

Prof. Dr. Douglas Fox

E-Mail Website
Guest Editor
Department of Chemistry, American University, Washington, DC 20016, USA
Interests: carbohydrates; flame retardants; nanomaterials; polymer composites; interfaces; trace labeling; fluorescent materials; polymerization; metathesis reactions; weathering; sustainability

Special Issue Information

Dear Colleagues,

Cellulose nanomaterials (CNMs) have attracted much attention as a component in composites and functional materials. CNMs are attractive due to their biosource, biocompatibility, mechanical property enhancements, vapor barrier properties, adsorption abilities, and large aspect ratios. Membranes, thin films, and coatings are often used as barriers to specific compounds. The two-dimensional aspect of these materials increases the need for strength and toughness of the material, making CNMs ideal candidates as fillers or matrix materials. In this Special Issue, we explore recent advances in the use of cellulose nanomaterials in membranes, thin films, and coatings. Films are used in a wide range of applications, including packaging, electrical, imaging, tape, laminates, and consumer goods. Membranes can be considered porous, semi-permeable films, and are most often used in the purification or separation processes. Further, coatings are very thin films designed to add a protective outer layer to materials. These materials are found in nearly every industrial sector and extensively used in the packaging, transportation, aerospace, and electronics sectors.

Prof. Dr. Douglas Fox
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 submissions that pass pre-check are 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 2700 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 nanomaterials
  • films
  • vapor barrier
  • adsorption
  • water purification

Published Papers (1 paper)

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Research

11 pages, 8805 KiB  
Article
Preparation of Porous Hydroxyethyl Cellulose Materials to Utilize Lactic Acid with Vacuum-Assisted Process
by Haeun Lee, Do Chun Nam Kung and Sang Wook Kang
Molecules 2023, 28(9), 3702; https://doi.org/10.3390/molecules28093702 - 25 Apr 2023
Cited by 1 | Viewed by 1341
Abstract
For the first time, we succeeded in manufacturing a 2-hydroxyethyl cellulose (HEC)-based composite membrane with improved thermal stability, for use as a battery separator, coating a HEC polymer solution to a polypropylene (PP) support and using a vacuum-assisted process. A HEC polymer solution [...] Read more.
For the first time, we succeeded in manufacturing a 2-hydroxyethyl cellulose (HEC)-based composite membrane with improved thermal stability, for use as a battery separator, coating a HEC polymer solution to a polypropylene (PP) support and using a vacuum-assisted process. A HEC polymer solution was prepared by utilizing HEC and lactic acid (LA) as a plasticizer. A vacuum-assisted process was used to move ethanol, which a mobile phase to permeate a plasticized region in the HEC polymer side for pore formation. The pores formed with uniform nano sizes, and areas in which some large pores formed were observed. The thermal stability of the composites was measured using TGA. The thermal decomposition temperatures were measured at about 250 °C for the neat HEC, about 210 °C for the HEC/LA film, and about 335 °C for the HEC/LA/PP membrane before the process. After the vacuum-assisted process, the first and second thermal decomposition were observed at about 360 °C and 450 °C, respectively. The HEC/LA/PP membrane after the process showed greater thermal stability than before the process. This means that the adhesion between the HEC polymer and the PP support was created through the rearrangement of the HEC chain, as LA escaped after the process, and it was seen indirectly that the mechanical strength was enhanced. In particular, the surface of the membrane was observed by SEM to investigate whether the HEC penetrated into the PP to block its pores, and whether the HEC region collapsed. Furthermore, the interaction of the HEC chain with the additives and the rearrangement of the HEC was confirmed using FT-IR. As a result, we demonstrated that the mechanical strength and thermal stability of the manufactured HEC/LA/PP membrane were enhanced. Full article
(This article belongs to the Special Issue Cellulose Nanomaterials—Recent Advances in Membranes, Films, and Coatings)
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