Poly(aryl ether ketone) synthesis via competing SNAR and SRN1 reactions: 1. Polymers derived from 1,3-bis(p-chlorobenzoyl)benzene and 1,3-bis(p-fluorobenzoyl)benzene with hydroquinone and 4,4′-isopropylidenediphenol

Mani, R. S.; Zimmerman, B.; Bhatnagar, Atul; Mohanty, Dillip K

doi:10.1016/0032-3861(93)90302-q

Cited by 27 publications

(21 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the peak shifts ware quickly decreased with the increase of the amount of bisphenol A. On the contrary, in the mixture of bisphenol A and i-pmim PF 6 , hydroxyl proton and C2-position of imidazolium moiety slightly shifted to downfield and upper, respectively. The values of the peak shift were gradually increased with increasing amount of bisphenol A.…”

Section: Il's Cations and Anions Naturementioning

confidence: 90%

“…Other solvents were utilized as received. 1 H NMR spectra were recorded on a Bruker Advance DRX-500 NMR spectrometer in DMSO-d 6 solutions. The molecular weight analysis was performed using a Polymer Laboratories gel permeation chromatograph (PL-GPC50) equipped with UV detector.…”

Section: Methodsmentioning

confidence: 99%

“…The influence of monomer concentration on properties of PAEKs was first examined by using i-pmim PF 6 as a model medium (Figure 2). The molecular weights of PAEKs gradually increased with increasing monomer concentration.…”

Section: Optimization Of Polycondensation Conditionsmentioning

confidence: 99%

“…Therefore, we examined the 1 H chemical shifts of bisphenol A in a series of ILs with different anions (Figure 3). 1 H NMR was performed in nonpolar and aprotic solvent of DMSO-d 6 . It was seen that the chemical shifts of protons in benzene ring and methyl slightly changed, while the chemical shifts of C-2 proton increased with increasing anion basicity and hydrogen bonding ability (PF6  <Tf 2 N<BF 4  <Br  ) [22].…”

Section: Il's Cations and Anions Naturementioning

confidence: 99%

“…Therefore, attempts have been made to develop new varieties of this material such as bisphenol A type PAEKs to improve the processing characteristics [4,5]. Generally, PAEKs were synthesized by the reaction of bisphenoxides with bis (aryl halides) via nucleophilic aromatic substitution (S N AR) mechanism [6]. The choices of solvents are usually N,Ndimethylacetamide and N-methyl-2-pyrolidone, which are volatile, flammable, toxic and harmful.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Ionic liquids as green reaction media for synthesis of poly(aryl ether ketone)s

Wang

Liu

2013

Chin. Sci. Bull.

View full text Add to dashboard Cite

Poly(aryl ether ketone)s (PAEKs) were successfully synthesized via nucleophilic aromatic substitution (S N AR) mechanism, using ionic liquids as green reaction media. The influence of various reaction parameters including monomer concentration, dehydration time, polymerization temperature and duration, IL's cations and anions nature, upon PAEKs molecular weight was investigated. In addition, the peculiarities of hydrogen-bonding ability of ILs were investigated. The interaction of 2,2-bis(4-hydroxyphenyl) propane (bisphenol A) with ILs has a strong influence on PAEKs synthesis. Various moderate molecular weight PAEKs have been obtained in high yields with molecular weights ranging from 10000 to 18000 g mol 1 .high performance polymers, ionic liquids, poly(aryl ether ketone)s, polycondensation Citation:Wang J, Liu Z P. Ionic liquids as green reaction media for synthesis of poly(aryl ether ketone)s.

show abstract

Section: Il's Cations and Anions Naturementioning

confidence: 90%

Section: Methodsmentioning

confidence: 99%

Section: Optimization Of Polycondensation Conditionsmentioning

confidence: 99%

Section: Il's Cations and Anions Naturementioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Ionic liquids as green reaction media for synthesis of poly(aryl ether ketone)s

Wang

Liu

2013

Chin. Sci. Bull.

View full text Add to dashboard Cite

show abstract

Advances in High‐Performance Polymers Bearing Phthalazinone Moieties

Wang

Cheng

Zhang

et al. 2018

High Performance Polymers and Their Nanocomposites

View full text Add to dashboard Cite

Synthesis and properties of novel poly(phthalazinone ether ketone ketone)

Liu

Jian

Liu

2001

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT:The hydrolytic behaviors of polyphenyl-1,2,4-triazine (As-PPT) at high temperatures were investigated both experimentally and theoretically. The hydrolytic experiments of As-PPT film and a reasonably designed model compound for the polymer were carried out in distilled water at 250°C/3.97 MPa under N 2 atmosphere, respectively. The hydrolytic reactions were monitored by FTIR and UV-Vis spectra, and their hydrolysates were identified by FTIR, HPLC, and MS. The results confirmed that the two reactions gave the same major hydrolysate, terephthalic acid. In addition, the electronic structure of its model compound, given by ab initio calculation at the 4-31G level, indicated that the triazine ring is the hydrolytically active part at which the N atoms are to be protonated. On the basis of these results, a hydrolytic mechanism is proposed, which suggests that the cleavage of one CON bond takes place, primarily on the triazine rings, followed by a gradual rupture of the polymer chain and the formation of the intermediate terephthalonitrile, the further hydrolysis of which produces terephthalic acid.

show abstract

Poly(aryl ether ketone) synthesis via competing SNAR and SRN1 reactions: 1. Polymers derived from 1,3-bis(p-chlorobenzoyl)benzene and 1,3-bis(p-fluorobenzoyl)benzene with hydroquinone and 4,4′-isopropylidenediphenol

Cited by 27 publications

References 26 publications

Ionic liquids as green reaction media for synthesis of poly(aryl ether ketone)s

Ionic liquids as green reaction media for synthesis of poly(aryl ether ketone)s

Advances in High‐Performance Polymers Bearing Phthalazinone Moieties

Synthesis and properties of novel poly(phthalazinone ether ketone ketone)

Contact Info

Product

Resources

About