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Polymers
Special Issues
Phosphorus-Containing Polymers
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Phosphorus-Containing Polymers

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

Deadline for manuscript submissions: closed (31 August 2019) | Viewed by 7223

Special Issue Editors

Prof. Dr. Sabyasachi Gaan

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Guest Editor
Empa, Swiss Federal Laboratories for Materials Science and Technology Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
Interests: phosphorus additives for polymers; phosphorus polymers; radical reactions in gas phase; gels; reactive extrusion; corrosion protection of metals; flame retardancy of polymers
Special Issues, Collections and Topics in MDPI journals
Dr. Khalifah Salmeia

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Co-Guest Editor
Additives and Chemistry, Advanced Fibers, Empa Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
Interests: catalysis; sustainable polymers; organophosphorus chemistry flame retardancy of polymers; metal organic frame works

Special Issue Information

Dear Colleagues,

Since its discovery, the phosphorus atom has received a great deal of attention in science due its chemical and physical characteristics, including its availability in different oxidation states and coordination numbers. A wide variety P-C and P-heteroatoms compounds can be synthesized due to the ability of phosphorus species to act as either a nucleophile or an electrophile, and such compounds are used as ligands in catalysis and coordination chemistry and drugs in medicinal chemistry, agrochemicals, and material science, etc. This Special Issue is focused on recent developments in the synthesis of organophosphorus macromolecules. In such polymers, phosphorus moieties are either an integral part of the main chain or incorporated as pendant groups. This Issue targets applications of novel organo-phosphorus polymers that find applications in diverse fields such as flame retardants in polymers, medical and dental applications, biomedical applications, energy, agriculture, drug delivery, etc.

Dr. Sabyasachi Gaan
Dr. Khalifah Salmeia
Guest Editor

Keywords

  • Drug delivery
  • Biomedical applications
  • Dental applications
  • Flame retardants
  • Anticorrosion applications
  • Water purification
  • Energy applications (ex. proton conductors)
  • New synthesis strategies
  • Coordination polymerization (catalytic and mechanistic study)
  • Photosensitive polymer
  • Polyphosphates
  • Polyphosphonates
  • Polyphosphazenes.

Published Papers (1 paper)

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Research

25 pages, 8698 KiB  
Article
Phosphine Oxide Containing Poly(pyridinium salt)s as Fire Retardant Materials
by Maksudul M. Alam, Bidyut Biswas, Alexi K. Nedeltchev, Haesook Han, Asanga D. Ranasinghe, Pradip K. Bhowmik and Kisholoy Goswami
Polymers 2019, 11(7), 1141; https://doi.org/10.3390/polym11071141 - 3 Jul 2019
Cited by 10 | Viewed by 6594
Abstract
Six new rugged, high-temperature tolerant phosphine oxide-containing poly(4,4′-(p-phenylene)-bis(2,6-diphenylpyridinium)) polymers P-1, P-2, P-3, P-4, P-5, and P-6 are synthesized, characterized, and evaluated. Synthesis results in high yield and purity, as confirmed by elemental, proton ( [...] Read more.
Six new rugged, high-temperature tolerant phosphine oxide-containing poly(4,4′-(p-phenylene)-bis(2,6-diphenylpyridinium)) polymers P-1, P-2, P-3, P-4, P-5, and P-6 are synthesized, characterized, and evaluated. Synthesis results in high yield and purity, as confirmed by elemental, proton (1H), and carbon 13 (13C) nuclear magnetic resonance (NMR) spectra analyses. High glass transition temperatures (Tg > 230 °C) and high char yields (>50% at 700 °C) are determined by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), respectively. These new ionic polymers exhibit excellent processability, thin-film forming, high-temperature resistance, fire-resistance and retardation, coating, adhesion, mechanical and tensile strength, and n-type (electron transport) properties. The incorporation of phosphine oxide and bis(phenylpyridinium) moieties in the polymer backbones leads to high glass transition temperatures and excellent fire retardant properties, as determined by microcalorimetry measurements. The use of organic counterions allows these ionic polymers to be easily processable from several common organic solvents. A large variety of these polymers can be synthesized by utilizing structural variants of the bispyrylium salt, phosphine oxide containing diamine, and the counterion in a combinatorial fashion. These results make them very attractive for a number of applications, including as coating and structural component materials for automobiles, aircrafts, power and propulsion systems, firefighter garments, printed circuit boards, cabinets and housings for electronic and electrical components, construction materials, mattresses, carpets, upholstery and furniture, and paper-thin coatings for protecting important paper documents. Full article
(This article belongs to the Special Issue Phosphorus-Containing Polymers)
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