Green synthesis of polymers containing phosphorus in the main chain

Iliescu, Smaranda; Pleşu, Nicoleta; Popa, Adriana; Macarie, Lavinia; Ilia, Gheorghe

doi:10.1016/j.crci.2010.07.002

Cited by 7 publications

(10 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Novel safe and non-flammable phosphorus-based electrolytes composed of phosphate as a linking agent with poly(ethylene glycol) were synthesized [18-21]. In our earlier papers we have reported the possibility of obtaining phosphorus containing polymers, respectively polyphosphonates and polyphosphates by interfacial polycondensation in liquid-liquid system [22], gas–liquid system [23,24] and inverse phase transfer catalysis [25]. …”

Section: Introductionmentioning

confidence: 99%

Polymers containing phosphorus groups and polyethers: from synthesis to application

Iliescu

Zubizarreta

Pleşu

et al. 2012

Chemistry Central Journal

Self Cite

View full text Add to dashboard Cite

BackgroundPhosphorus-containing high performance polymers have aroused wide interest, mainly due to good mechanical properties and their excellent fire resistance. The flexibility of synthetic polyphosphoesters allows the development of polymers in order to obtain solid polymer electrolytes for rechargeable lithium batteries based on solid films with superior fire resistance.ResultsNovel linear Phosphonate-PEG polymers were synthesized by solution polycondensation of 4-chlorophenyldichlorophosphonate as a linking agent and poly(ethylene glycol)s with different molecular weights in the presence of triethylamine or 1-methylimidazole as acid scavenger. The yields were between 54% and 88% and inherent viscosity between 0.18-0.48 dl/g. Molar masses, Mn were about 26300 g/mol for polyphosphonates with PEG 2000 and 4600 g/mol for polyphosphonates with PEG 200. The LOI values for these polymers and membranes are in the range of 26–29. The membranes based on polyphosphonate with PEG 200 and 2000 showed conductivity between 6 × 10-8 S.cm-1 and 6 × 10-7 S.cm-1 at room temperature and total ionic transference number between 0.87- 0.96. The evolution of conductivity vs. temperature is linear.Conclusions1-methylimidazole was found to be better HCl scavenger than triethylamine, and allowed higher yields and more eco-friendly synthesis of the Phosphonate-PEG polymers for SPE. These polymers and membranes based on these polymers showed good LOI values and indicate an improvement of the safety of lithium batteries. The membranes present conductivities around 6 × 10-7 S.cm-1at room temperature and total ionic transference number is higher for membranes based on polymers with high EG unit content. Best results yield 88%, inherent viscosities 0.48 dl/g and Mn 26000 were obtained with 1-methylimidazole and PEG 2000. These membranes based on these polymers showed good LOI values (in the range 26-29%) and indicate an improvement of the safety of lithium batteries.

show abstract

Section: Introductionmentioning

confidence: 99%

Polymers containing phosphorus groups and polyethers: from synthesis to application

Iliescu

Zubizarreta

Pleşu

et al. 2012

Chemistry Central Journal

Self Cite

View full text Add to dashboard Cite

show abstract

“…Scientific communities have manifested high interest in this area. Due the broad application of these materials in many products, several studies have been realized with polymeric materials containing compounds with flame retardant properties [1][2][3][4][5]. The flame retardant compounds are studied and applied in the polymeric materials to delay its combustions reactions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Polyphosphate Polymer Employing the Bisphenol (BHBF) and the Dichloride of Phenylphosphonic (PPDC): Evaluation of the Thermal Characteristics

Dominguini¹,

Karina²,

Michael³

et al. 2019

Current Trends Anal Bioanal Chem

View full text Add to dashboard Cite

This work presents studies about the synthesis and thermal characterization of a new polymer synthetized from the chloride phenylphosphonic molecule containing. The interfacial polycondensation method was utilized for the synthesis at low temperature. As monomer were used the phenylphosphonic dichloride (PPDC) and the 4,4'-dihydroxybenzophenone (DHBP). The synthesis reactions were conducted at room temperature with heterogeneous medium and constant stirring. The polymer was characterized by FTIR, NMR 31 P and MALDI-TOF, which proved the formation of a compound polyphosphonate. DSC and TGA showed that the vitreous transition occurs at temperature of 66.0 °C and that the value of 220.0 °C is the degradation temperature of the polymer. After thermal degradation process the percentage of residual material is around 22.0 wt%. These results suggest the possibility of application of this material as a flame retardant in polymer materials.

show abstract

“…The polyphosphoesters, respectively polyphosphonates and polyphosphates were obtained by liquid-liquid, gas-liquid, or solid-liquid phase transfer catalysis polycondensation and inverse phase transfer catalysis of phenyl phosphonic (phosphoric) dichloride with aromatic diols [11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Polymers were characterized by spectral data, molar mass determination, and thermal analysis.…”

Section: Resultsmentioning

confidence: 99%

“…In this work, the experimental limiting oxygen indices have been determined for previously synthesized polyphosphonates and polyphosphates [11][12][13][14][15][16][17][18][19][20][21][22][23][24] (Table 1), except for structures 8 and 11, for which these values were already published [20]. A structure-flammability relationship study for these polyphosphoesters was modeled from their monomers by correlating structural parameters with the experimental LOI values.…”

Section: Introductionmentioning

confidence: 99%

Correlations of limiting oxygen index with structural polyphosphoester features by QSPR approaches

2014

Self Cite

View full text Add to dashboard Cite

Fire retardant materials diminish the hazard to life from fire. Polyphosphonates and polyphosphates display good flame retardancy and attractive plasticizing properties, being an important class of organophosphorus based polymer additives. Properties of previously synthesized polyphosphoesters are presented here, being simulated as monomers. In this quantitative structure-property relationship work, the flammability was expressed by limiting oxygen index (LOI) values, which were determined experimentally. Two types of chiral structures were found by molecular mechanics calculations using the MMFF94s force field for half of the monomers, consequently, two datasets were built. Structural parameters were calculated for the minimum energy structures and were related to the LOI values by multiple linear regression (MLR), artificial neural networks (ANNs), and support vector machines (SVMs). MLR calculations were combined with a genetic algorithm for variable selection. Stable and predictive MLR models in terms of 2D autocorrelation parameters weighed by atomic polarizabilities and of 3D-Morse descriptors were obtained. Somewhat inferior fits were found in the nonlinear modeling by ANNs and SVMs with the same set of descriptors. Monomers including R chiral structures gave more stable and predictive models compared to the S isomers in all approaches. Monomer geometry influences the flame retardancy, being favorable for R isomers.

show abstract

Green synthesis of polymers containing phosphorus in the main chain

Cited by 7 publications

References 18 publications

Polymers containing phosphorus groups and polyethers: from synthesis to application

Polymers containing phosphorus groups and polyethers: from synthesis to application

Synthesis of Polyphosphate Polymer Employing the Bisphenol (BHBF) and the Dichloride of Phenylphosphonic (PPDC): Evaluation of the Thermal Characteristics

Correlations of limiting oxygen index with structural polyphosphoester features by QSPR approaches

Contact Info

Product

Resources

About