Host-Guest Polymer Complexes II

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: closed (5 December 2019) | Viewed by 6463

Special Issue Editors


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Guest Editor
Fiber & Polymer Science Program College of Textiles, North Carolina State University, Campus Box 8301, 2401 Research Drive, Raleigh, NC 27695-8301, USA
Interests: characterization of polymer microstructures; conformations; properties; NMR; kerr-effects; nanostructuring polymers through host–guest complex formation
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Department of Chemistry and The Marvin B. Dow Advanced Composites Institute, Mississippi State University, Starkville, MS 39759, USA
Interests: cyclodextrins; biomaterials; synthetic degradable polymers; analytical characterization; micro and nanofibers; orthopaedic tissue regeneration

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Guest Editor
Faculty of Textile Technologies and Design, Istanbul Technical University, Inonu Cad. No 65 Gumussuyu, Beyoglu, 34437 Istanbul, Turkey
Interests: polymer structure and properties; composites; flexible and stretchable electronics; 2-dimensional materials; cylodextrin; urea; biomaterials

Special Issue Information

Dear colleagues,

Following the conclusion and successful reception of the Special Issue "Host–Guest Polymer Complexes", we are delighted to announce and reopen the second volume entitled "Host–Guest Polymer Complexes II".

The discovery of host–guest complexation has resulted in significant advancements in various facets of materials science, including drug delivery, tissue engineering, etc. The second volume will continue to include papers describing the syntheses, characterization, and use of host–guest polymer complexes, as well as factors that are important to their formation.

We cordially invite you to consider submitting your next appropriate research paper or review article to this thematic issue.

Prof. Dr. Alan Edward Tonelli
Dr. Ganesh Narayanan
Dr. Alper Gurarslan
Guest Editors

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. Polymers 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

  • host polymers
  • guest molecules
  • host–guest polymer complexes
  • polymer inclusion complexes
  • non-included polymer complexes
  • formation of polymer complexes
  • characterization of polymer complexes
  • application of polymer complexes

Published Papers (2 papers)

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Research

18 pages, 8132 KiB  
Article
Influence of Polyphosphates on the Physicochemical Properties of Poly (Vinyl Chloride) after Irradiation with Ultraviolet Light
by Gamal A. El-Hiti, Dina S. Ahmed, Emad Yousif, Mohammad Hayal Alotaibi, Hind A. Satar and Ahmed A. Ahmed
Polymers 2020, 12(1), 193; https://doi.org/10.3390/polym12010193 - 10 Jan 2020
Cited by 34 | Viewed by 3034
Abstract
Three new polyphosphates were synthesized in good yields by reacting diethylenetriamine with the appropriate phosphate ester in ethanol under acidic conditions. The polyphosphate structures were determined using FT-IR and 1H-NMR spectroscopies, and their elemental compositions were confirmed by EDX spectroscopy. Polyphosphates were [...] Read more.
Three new polyphosphates were synthesized in good yields by reacting diethylenetriamine with the appropriate phosphate ester in ethanol under acidic conditions. The polyphosphate structures were determined using FT-IR and 1H-NMR spectroscopies, and their elemental compositions were confirmed by EDX spectroscopy. Polyphosphates were added to poly(vinyl chloride) (PVC) at low concentrations to fabricate thin films. The PVC films were irradiated with ultraviolet light for long periods, and the effect of polyphosphates as the photostabilizer was investigated by determining changes in the infrared spectra (intensity of specific functional group peaks), reduction in molecular weight, weight loss, and surface morphology. Minimal changes were seen for PVC films containing polyphosphate compared to that for the blank film. In addition, optical, scanning electron, and atomic force microscopies were used to inspect the surface morphology of films. Undesirable changes due to photodegradation were negligible in PVC films containing additives compared to films containing no additives. In addition, the surfaces were smoother and more homogeneous. Polyphosphates, and in particular ones that contain an ortho-geometry, act as efficient photostabilizers to reduce the rate of photodegradation. Polyphosphates absorb ultraviolet light, chelate with polymeric chains, scavenge radical moieties, and decompose peroxide residues. Full article
(This article belongs to the Special Issue Host-Guest Polymer Complexes II)
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15 pages, 3425 KiB  
Article
Enhanced Solubility, Stability, and Herbicidal Activity of the Herbicide Diuron by Complex Formation with β-Cyclodextrin
by Shuang Gao, Jing-Yu Jiang, Yan-Yan Liu, Ying Fu, Li-Xia Zhao, Chun-Yan Li and Fei Ye
Polymers 2019, 11(9), 1396; https://doi.org/10.3390/polym11091396 - 25 Aug 2019
Cited by 35 | Viewed by 3170
Abstract
The herbicide diuron is hardly soluble in water and most organic solvents and is usually made into a wettable powder or mixed with soil when used, which causes environmental risk and a reduction in herbicidal efficacy. In this study, the physicochemical properties were [...] Read more.
The herbicide diuron is hardly soluble in water and most organic solvents and is usually made into a wettable powder or mixed with soil when used, which causes environmental risk and a reduction in herbicidal efficacy. In this study, the physicochemical properties were changed by using β-cyclodextrin (β-CD) to encapsulate diuron to form an inclusion complex. Some key technologies, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and nuclear magnetic resonance (1H NMR), were used to characterize the inclusion complex. The stoichiometry of the inclusion complex was determined by recording the 1H NMR spectrum or by using a diagram of inclusion ratios. A phase solubility study proved that the formed inclusion complex exhibited higher water solubility. Thermogravimetric analysis (TGA) demonstrated that the formed inclusion complex exhibited better thermal stability. Biological activity studies indicated that the herbicidal activity, in terms of herbicide removal, of the formed inclusion complex was higher than that of the original diuron. In general, the formation of the inclusion complex could reduce the environmental damage caused by diuron and enhance its herbicidal activity, providing an environmentally friendly method for using diuron. Full article
(This article belongs to the Special Issue Host-Guest Polymer Complexes II)
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