Synthesis, characterization and thermal stability of phosphazene terpolymers with 2-(2-methoxyethoxy)ethoxy and diacetoneD-glucofuranosyl pendant groups

Stewart, Frederick F.; Harrup, Mason K.; Lash, Robert Paul; Tsang, Marilyn N.

doi:10.1002/(sici)1097-0126(200001)49:1<57::aid-pi295>3.0.co;2-q

Cited by 24 publications

(11 citation statements)

References 14 publications

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“…The initial weight loss takes place over a wide temperatures range (60–110 °C) and is due to the elimination of absorbed and adsorbed water, since these materials are highly hygroscopic 23, 30. This behaviour is very similar to that shown in the thermal degradation of other natural or synthetic polysaccharides 31–34. Subsequently, two degradation steps, at 235 and 295 °C, appear almost simultaneously.…”

Section: Resultsmentioning

confidence: 55%

Novel Glycopolymer Brushes via ATRP: 2. Thermal and Mechanical Properties

Fleet

Dungen

Klumperman

2011

Macro Chemistry & Physics

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The thermal and mechanical properties of a series of novel glycopolymer brushes with various degrees of polymerization of the backbone and various grafting densities are established. Modulated differential scanning calorimetry (MDSC) is found to be an effective tool for the characterization of the thermal behavior of these glycopoly mer brushes. There is little difference among the glass transition temperatures of the different glycopolymer brushes. The elastic features of each glycopolymer predominate ( G ′ > G ″ ) at low frequency, while at higher frequencies the G ″ curve overtakes the G ′ curve, indicating the predominance of the viscous response.

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Section: Resultsmentioning

confidence: 55%

Novel Glycopolymer Brushes via ATRP: 2. Thermal and Mechanical Properties

Fleet

Dungen

Klumperman

2011

Macro Chemistry & Physics

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“…As can be noticed, all the glycopolymers degraded in three stages. Although it has been reported that these kinds of very hygroscopic materials as well as polysaccharides undergo an initial stage between 100 and 160 °C due to the adsorbed and absorbed water,44–52 this stage was not observed. This is because the glycopolymers were dried immediately before the measurement.…”

Section: Resultsmentioning

confidence: 88%

Statistical Glycopolymers Based on 2‐Hydroxyethyl Methacrylate: Copolymerization, Thermal Properties, and Lectin Interaction Studies

Bordegé¹,

Muñoz‐Bonilla²,

León³

et al. 2011

Macro Chemistry & Physics

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Amphiphilic statistical glycopolymers based on unprotected glycomonomer, 2‐{[(D‐glucosamin‐2‐N‐yl)carbonyl]oxy}ethyl methacrylate (HEMAGl), and methyl acrylate have been synthesized by classical free radical polymerization in DMSO solutions at 70 °C. The reactions have been followed by in situ monitoring proton NMR. The monomer reactivity ratios have been calculated using Kelen‐Tüdös extended equation. Then, the cumulative feed and copolymer compositions as a function of conversion have been obtained, showing a good agreement between the experimental and theoretical data. The thermal properties such as their glass transition and thermal stability temperatures have been analyzed. In addition, the carbohydrate–lectin interaction in those water‐soluble glycopolymers has been studied, demonstrating successful binding. magnified image

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“…The Fox equation24 describes the relationship between the T g of an organic copolymer and the T g values of each homopolymer. We recently described a phosphazene terpolymer where the T g could be predicted with a high level of accuracy from the relative amounts of each pendant group and the T g values from each of the phosphazene homopolymers 25. Application of this relationship to the new polymers is problematic due to the need to know the T g values of each homopolymer, which are known for MEE‐ and p ‐methoxyphenol‐substituted polymers, −79 and 7°C, respectively.…”

Section: Resultsmentioning

confidence: 99%

Formation of pervaporation membranes from polyphosphazenes having hydrophilic and hydrophobic pendant groups: Synthesis and characterization

Stewart¹,

Harrup²,

Luther³

et al. 2001

J. Appl. Polym. Sci.

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A series of new polyphosphazene polymers were synthesized using three different pendant groups with the goal of probing structure–function relationships between pendant group substitution and polymer swelling/water flux through thin dense films. Formation of polymers with relative degrees of hydrophilicity was probed by varying the stoichiometry of the pendant groups attached to the phosphazene backbone: p‐methoxyphenol, 2‐(2‐methoxyethoxy)ethanol, and o‐allylphenol. The polymers in this study were characterized using NMR, thermal methods, and dilute solution light‐scattering techniques. These techniques revealed that the polymers were amorphous high polymers (Mw = 105–107) with varying ratios of pendant groups as determined by integration of the 1H‐ and 31P‐NMR spectra. Thin dense film membranes were solution‐cast with azo‐bis(cyclohexane)carbonitrile included in the matrix and crosslinked using thermal initiation. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 422–431, 2001

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Synthesis, characterization and thermal stability of phosphazene terpolymers with 2-(2-methoxyethoxy)ethoxy and diacetoneD-glucofuranosyl pendant groups

Cited by 24 publications

References 14 publications

Novel Glycopolymer Brushes via ATRP: 2. Thermal and Mechanical Properties

Novel Glycopolymer Brushes via ATRP: 2. Thermal and Mechanical Properties

Statistical Glycopolymers Based on 2‐Hydroxyethyl Methacrylate: Copolymerization, Thermal Properties, and Lectin Interaction Studies

Formation of pervaporation membranes from polyphosphazenes having hydrophilic and hydrophobic pendant groups: Synthesis and characterization

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