Characterization of synthesized poly(aryldisulfide) through interfacial polymerization using phase-transfer catalyst

Sheydaei, Milad; Kalaee, Mohammadreza; Allahbakhsh, Ahmad; Samar, M.; Aghili, Alireza; Dadgar, Mohsen; Moosavi, Golsima

doi:10.1080/17415993.2012.662669

Cited by 27 publications

(8 citation statements)

References 20 publications

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“…This behavior leads to an increment in the average molecular weight of polymer, which noticeably affects the properties of polysulfide polymer. 15 Besides, in situ polymerization technique has been reported as an efficient method for the preparation of polymeric nanocomposites in literature. [16][17][18][19] This method involves the polymerization of polymeric monomers in the presence of macro-or nanoparticles, which leads to a high degree of filler dispersion and distribution.…”

Section: Introductionmentioning

confidence: 99%

Enhanced thermal properties of poly(ethylene tetrasulfide) via expanded graphite incorporation by in situ polymerization method

Allahbakhsh

Sheydaei

Mazinani

et al. 2013

High Performance Polymers

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In this study, a novel poly(ethylene tetrasulfide) (PETS)/expanded graphite (EG) nanocomposite with 40 C improvement in melting point is prepared via in situ polymerization technique. The morphology, chemical characteristics and the structural behavior of nanocomposites are characterized using scanning electron microscopy, Fourier transform infrared spectroscopy and x-ray diffraction (XRD) techniques, respectively. XRD observations show about 0.1 nm increase in dspacing of PETS crystals in the presence of 2 wt% EG in nanocomposite. This behavior could be related to the intercalation of polysulfide macromolecules in the interlayer structure of EG sheets. Furthermore, the thermal properties of nanocomposites are investigated using differential scanning calorimetry and thermogravimetric analysis techniques. The thermal degradation temperature of nanocomposite containing 2 wt% graphite shows an improvement of about 10 C compared to unfilled polysulfide. Moreover, the chemical resistance of nanocomposites in different common solvents increases in the presence of EG, which could be accounted as a clear proof of interconnections for EG and macromolecular structure of the polymer.

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Section: Introductionmentioning

confidence: 99%

Enhanced thermal properties of poly(ethylene tetrasulfide) via expanded graphite incorporation by in situ polymerization method

Allahbakhsh

Sheydaei

Mazinani

et al. 2013

High Performance Polymers

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“…Interfacial polymerization using phase transfer catalyst is preferred owing to the high degree of purity and efficiency in separation, mild reaction condition, high yield and high molecular weights at low conversions of reacting groups. [15][16]12] Quaternary ammonium and phosphonium salts, poly(ethyleneglycol), cryptates and crown ethers are certain examples for phase transfer catalysts. [17] Linear polysulfides namely poly(methylene disulfide) and poly(ethylene disulfide) are synthesized by using benzyltriethylammonium chloride found to have thermal stability in the range of 255-260 °C.…”

Section: Polysulfides Through Polycondensationmentioning

confidence: 99%

“…Most of the commercial preparation of polysulfide is through the reaction between alkyl chlorides and sodium polysulfide. [12] Use of mixed dihalide monomer in the condensation polymerization process leads to random copolymers. For making block copolymers, it is required to make individual mercaptan-terminated polymers and blending them in a desired proportions.…”

Section: Polysulfides Through Polycondensationmentioning

confidence: 99%

Sulfur Polymer as Emerging Advanced Materials: Synthesis and Applications

2023

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Abundant availability of inexpensive sulfur coupled with its reactivity triggered the interest of scientific community to explore the unique chemistry of sulfur for developing advanced materials. The reactivity of sulfur diradicals is used for making copolymers with cross-linker monomer dienes through inverse vulcanization principle which is later upgraded by conducting reactions in presence of catalysts so as to achieve functionalized sulfur copolymers at lower reaction temperatures and lower time. Multi-component reactions provide an opportunity for the direct utilization of sulfur at mild conditions. The diverse processing methodologies have further expanded the applicability of sulfur polymeric materials. The dynamicity of the SÀ S bonds has potential to create avenue for making self-healing materials and usher the generation of more functionalized segmented block co-polymers with superior properties. Interfacial condensation polymerization has successfully been implemented for the generation of sulfur nanoparticles in aqueous medium. The recent emergence of sulfur quantum dots through various approaches generated more advanced sulfur based materials in terms of expanding sulfur applications. This review provides an account on advanced materials synthesized using sulfur as raw material and their respective applications.

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“…This class of materials shows great resistance against gases, organic solvents, and ozone effects [3][4][5]. Incorporation of a sulfide linkage into a polymer backbone causes an increase in solvent resistance and other properties of polymer [6][7][8][9][10]. On the other hand, aromatic polydisulfide polymers have superior resistance against environmental degradation, low water-vapor transmission, excellent resistance against acids and bases, and good adhesion to metals [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of poly(p-xylylene tetrasulfide) via interfacial polycondensation in the presence of phase transfer catalysts

Sheydaei

Kalaee

Allahbakhsh

et al. 2012

Designed Monomers and Polymers

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Poly(p-xylylene tetrasulfide) was synthesized from 1,4-bis(chloromethyl)-benzene and sodium tetrasulfide using interfacial polycondensation technique to examine the effect of methyl tributyl ammonium chloride, tetrabutyl ammonium bromide, and benzyl triethyl ammonium chloride as phase transfer catalysts. The structure of the synthesized polysulfide was confirmed via elemental analysis, attenuated total reflectance Fourier transform infrared spectroscopy, Raman spectroscopy, and X-ray diffraction techniques. Moreover, the thermal behavior of this polymer was characterized using differential scanning calorimetry and thermo gravimetric analysis methods. Beyond, Friedman method was applied to analyze the degradation kinetics of the prepared polymer. The synthesized polymer had a molecular weight of about 2584 g/mol.

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Characterization of synthesized poly(aryldisulfide) through interfacial polymerization using phase-transfer catalyst

Cited by 27 publications

References 20 publications

Enhanced thermal properties of poly(ethylene tetrasulfide) via expanded graphite incorporation by in situ polymerization method

Enhanced thermal properties of poly(ethylene tetrasulfide) via expanded graphite incorporation by in situ polymerization method

Sulfur Polymer as Emerging Advanced Materials: Synthesis and Applications

Synthesis and characterization of poly(p-xylylene tetrasulfide) via interfacial polycondensation in the presence of phase transfer catalysts

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