Synthesis and characterization of new aromatic polyamides, polyimides, and polyureas containing 1,3,5‐triazine rings

Lin, Jui‐Kun; Yuki, Yasuo; Kunisada, Hideo; Kondo, Shuji

doi:10.1002/app.1990.070401124

Cited by 17 publications

(9 citation statements)

References 14 publications

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“…Polyurea is an extremely rough material and exhibits high hardness and good chemical resistance, which enable it to have many applications, for example, in corrosion protection and coating systems [1]. Many efforts to synthesise a new class of thermally stable polyurea to achieve different properties have been reported, such as phosphorus-containing heterocyclic polyurea [2][3][4][5]. Heterocyclic-based PU derivatives or by another wards, metal-containing PU with an ionic link in the main chain was synthesized and received great attention [6,7]; meanwhile, the introduction of a metal into heterocyclic polyurea, to achieve a versatile number of variable properties, has been studied, and the polymer chain was reported as a possible cause for their increased thermal stability [2,3,5,8].…”

Section: Introductionmentioning

confidence: 99%

Novel biologically active polyurea derivatives and its TiO₂-doped nanocomposites

Hussein

Alamry

Almehmadi

et al. 2020

Designed Monomers and Polymers

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A new series of polyurea derivatives and its nanocomposites were synthesised by the solution polycondensation method through the interaction between 4(2-aminothiazol-4-ylbenzylidene)-4-(tert-butyl) cyclohexanone and diisocyanate compound in pyridine. The PU 1-3 structure was confirmed using Fourier transform-infrared (FTIR) spectroscopy and characterised by solubility, viscometry, gel permeation chromatography (GPC), and X-ray diffraction (XRD) analysis. In addition, PU 1-3 was evaluated by TGA. Polyurea-TiO 2 nanocomposites were synthesised using the same technique as that of PU 1-3 by adding TiO 2 as a nanofiller. The thermal properties of PU 2 TiO 2 ad were evaluated by TGA. Moreover, the morphological properties of a selected sample were examined by SEM and TEM. In addition, PU 1-3 and PU 2 TiO 2 ad were examined for antimicrobial activity against certain bacteria and fungi. The PU 1-3 showed antibacterial activity against some of the tested bacteria and fungi, as did PU 2 TiO 2 ad , which increased with the increase in TiO 2 content. Furthermore, molecular docking studies were displayed against all PU 1-3 derivatives against two types of proteins. The results show that the increase in the strength of π-H interactions and H-donors contributed to improved binding of PU2 compared to PU1 andPU 3. The docking of 1KZN against the tested polymers suggests an increase in the docking score of PU 2, then PU 1 , and PU 3 , which is in agreement with the antibacterial study.

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Section: Introductionmentioning

confidence: 99%

Novel biologically active polyurea derivatives and its TiO₂-doped nanocomposites

Hussein

Alamry

Almehmadi

et al. 2020

Designed Monomers and Polymers

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“…They can be tailor‐made to obtain properties that lead to versatile applications such as coating systems for waterproofing and corrosion protection 7. Attempts to synthesize new types of thermally stable polyureas such as phosphorus‐containing and heterocyclic polyureas to obtain different properties have been reported 8–10…”

Section: Introductionmentioning

confidence: 99%

New polymer syntheses, Part 44: Synthesis, characterization, and corrosion inhibition behavior of new polyurea derivatives based on diaryl ether in the polymers backbone

Aly

Abbady

Mahgoub

et al. 2009

J of Applied Polymer Sci

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A new interesting class of polyurea derivatives 5 a-c was synthesized using solution polycondensation technique by the interaction of 1 mol of 4,4 0 -bis(2 00 -aminothiazol-4 00 -yl)diphenyl ether monomer 3 with 1 mol of diisocyanate compounds in pyridine. The model compound 4 was synthesized by the interaction of 1 mol of monomers 3 with 2 mol of phenylisocyanate in pyridine, and the structure was confirmed by correct elemental and spectral analyses. The resulting polymers were characterized by elemental and spectral analyses besides solubility and viscometry measurements. The thermal properties of those polymers were evaluated by TGA, DTG, and DTA measurements and correlated to their structural units. In addition, the morphological properties of a selected example were tested by SEM, and the electrical properties of these polymers were measured. On the other hand, the corrosion inhibition properties of selected example of polyurea derivatives were carried out on steel in 0.5M H 2 SO 4 at 40 C giving cathodic inhibition.

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“…The PIs also exhibited good thermal stability with 10% weight loss temperature in the range 403–502 °C. Lin et al . has reported the synthesis of novel PIs containing 1,3,5‐triazine rings with various aromatic dicarboxylic acids.…”

Section: Introductionmentioning

confidence: 99%

Structure, thermal stability, electrochemical behaviors, and mechanical properties of organosoluble polyimide with pyrimidine ring in the main chain

2016

J of Applied Polymer Sci

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A novel organosoluble polyimide (PI) with pyrimidine ring in the main chain was synthesized by chemical and thermal imidization, respectively, from 3,3 0 ,4,4 0 -benzophenone tetracarboxylic dianhydride and 2,4-diamino-6-chloropyrimidine as raw materials and its molecular structure, solubility, UV-visible absorption characteristic, crystallinity, thermal stability, electrochemical behaviors, and mechanical properties were also studied. It was found that the introduction of pyrimidine ring in the main chain could increase the solubility of PI in polar aprotic solvents at room temperature and 60 8C, respectively, because of its molecular main chain with asymmetric structure and two polar N atoms in pyrimidine ring. Furthermore, PI had strong optical absorption peak intensity, excellent thermal stability, good redox reversibility, especially outstanding mechanical properties, which were conductive to its potential applications in adhesives, polyelectrolyte, separation membrane, and so on. V C 2016 Wiley Periodicals, Inc. J.Appl. Polym. Sci. 2016, 133, 43680.

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Synthesis and characterization of new aromatic polyamides, polyimides, and polyureas containing 1,3,5‐triazine rings

Cited by 17 publications

References 14 publications

Novel biologically active polyurea derivatives and its TiO₂-doped nanocomposites

Novel biologically active polyurea derivatives and its TiO₂-doped nanocomposites

New polymer syntheses, Part 44: Synthesis, characterization, and corrosion inhibition behavior of new polyurea derivatives based on diaryl ether in the polymers backbone

Structure, thermal stability, electrochemical behaviors, and mechanical properties of organosoluble polyimide with pyrimidine ring in the main chain

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Synthesis and characterization of new aromatic polyamides, polyimides, and polyureas containing 1,3,5‐triazine rings

Cited by 17 publications

References 14 publications

Novel biologically active polyurea derivatives and its TiO2-doped nanocomposites

Novel biologically active polyurea derivatives and its TiO2-doped nanocomposites

New polymer syntheses, Part 44: Synthesis, characterization, and corrosion inhibition behavior of new polyurea derivatives based on diaryl ether in the polymers backbone

Structure, thermal stability, electrochemical behaviors, and mechanical properties of organosoluble polyimide with pyrimidine ring in the main chain

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Product

Resources

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Novel biologically active polyurea derivatives and its TiO₂-doped nanocomposites

Novel biologically active polyurea derivatives and its TiO₂-doped nanocomposites