Synthesis and properties of novel soluble aromatic polyamides containing 4-aryl-2,6-diphenylpyridine moieties and pendant fluorinated phenoxy groups

Zou, Feihua; Wen, Hao; Yan, Tao; Cai, Mingzhong

doi:10.1007/s10965-016-1117-z

Cited by 18 publications

(11 citation statements)

References 41 publications

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“…Among the high‐performance polymers, aromatic polyamides (aramids) are known for their various features and benefits such as high thermal stability, high glass transition temperatures, desirable mechanical properties and high chemical resistance 1,2 . However, many aramids have low solubility in common organic solvents, which limits their applications for advanced technologies 3,4 . Many structural modifications can be used to solve these problems, such as the incorporation of flexible bonds and chains and also the addition of bulky pendant groups into the polymer backbone, which leads to lowering the inter‐chain interactions and increasing solubility 5–7 …”

Section: Introductionmentioning

confidence: 99%

Fabrication and study of thermal and combustion resistance of DOPO‐functionalized polyamide reinforced with organo‐modified Mg(OH)₂ nanoparticles

Hajibeygi

Habibnejad

Shabanian

et al. 2020

Polymer International

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DOPO‐based dicarboxylic acid (DODA) was synthesized and used to prepare DOPO‐based polyamide (DOPA) using a direct polycondensation reaction. Also, DODA was used for the surface modification of Mg(OH)2 nanoparticles. Polyamide/Mg(OH)2 nanocomposites (DPANC) were prepared based on DOPA and the organically modified Mg(OH)2 nanoparticles through the solvent casting method. Further, to investigate the effect of the DOPO structure on the thermal and combustion properties, a poly(amide‐imine) (PAIm) without the DOPO structure was synthesized. The structure and morphology of the prepared nanocomposites were studied using various techniques. The results indicated that nanoparticles were uniformly dispersed in the polymer matrix. According to thermogravimetric analysis results, the temperature at 10% mass loss was increased from 309 to 337 °C in the DPANC sample containing 8 mass% of nanoparticles as compared to DOPA in inert atmosphere. Further, according to microscale combustion calorimetry results, the peak heat release rate (pHRR) was decreased from 33 to 19 W g−1 in the DPANC 5 sample, as compared to DOPA. Also, the pHRR value of PAIm was obtained as 138 W g−1, which was about 105 W g−1 higher than that of polyamide. © 2020 Society of Industrial Chemistry

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Section: Introductionmentioning

confidence: 99%

Fabrication and study of thermal and combustion resistance of DOPO‐functionalized polyamide reinforced with organo‐modified Mg(OH)₂ nanoparticles

Hajibeygi

Habibnejad

Shabanian

et al. 2020

Polymer International

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“…The presence of the CF3 groups influenced the optical properties of the polyamides, having low refractive indices (n), from 1.6164 to 1.6613, and low birefringence, ranging 0.0101 to 0.0305, with differences in nxy and nz, pointing to the slight anisotropy of the aramid films. Li and coworkers [157] and Zou and coworkers [60] prepared similar aromatic polyamides (Scheme 40, P67) containing CF 3 groups. Some polymers were even soluble in THF, had T g s between 270 and 314 • C, decomposition temperatures ranging from 442 to 516 • C (10% mass loss) and high char yields, up to 61% (800 • C) in inert atmosphere.…”

Section: Fluorinated Polyamidesmentioning

confidence: 99%

Functional Aromatic Polyamides

et al. 2017

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Abstract:We describe herein the state of the art following the last 8 years of research into aromatic polyamides, wholly aromatic polyamides or aramids. These polymers belong to the family of high performance materials because of their exceptional thermal and mechanical behavior. Commercially, they have been transformed into fibers mainly for production of advanced composites, paper, and cut and fire protective garments. Huge research efforts have been carried out to take advantage of the mentioned characteristics in advanced fields related to transport applications, optically active materials, electroactive materials, smart materials, or materials with even better mechanical and thermal behavior.

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“…Aromatic polyamides (aramids), because of exceptional chemical resistance, high thermal stability, excellent mechanical properties, and low flammability are accepted as high-performance engineering polymers [10,11]. However, high melting/softening temperature, poor solubility, high stiffness, and high crystallinity have resulted in a number of difficulties in the processing of these polymers [12].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of novel functional hyperbranched polyamides from AB₂ units: effect of extra functional groups

Rezania

2020

Designed Monomers and Polymers

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Hyperbranched polymers (HPs), which in terms of structure may be compared to the branching structure of trees, are referred to as tree-like materials, but role of leave in these tree-like polymers is neglected and much attention has only been paid to their branches. In fact, functional groups in these polymers play a vital role the same as the role of leaves in trees. Therefore, in this paper, an attempt has been made to design and synthesize three AB 2 monomers containing extra hydroxyl and nitro groups. The benefits of their presence in the structure of produced hyperbranched polyamides (HPs) are investigated. The polymer structure was characterized by FT-IR and 1 H NMR. The solubility of synthesized HPs was studied in different protic and aprotic solvents. The thermal stability of the prepared HPs was investigated by thermogravimetric and differential scanning calorimetric analyses. The photoluminescent properties of the HPs were also investigated.

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Synthesis and properties of novel soluble aromatic polyamides containing 4-aryl-2,6-diphenylpyridine moieties and pendant fluorinated phenoxy groups

Cited by 18 publications

References 41 publications

Fabrication and study of thermal and combustion resistance of DOPO‐functionalized polyamide reinforced with organo‐modified Mg(OH)₂ nanoparticles

Fabrication and study of thermal and combustion resistance of DOPO‐functionalized polyamide reinforced with organo‐modified Mg(OH)₂ nanoparticles

Functional Aromatic Polyamides

Synthesis and characterization of novel functional hyperbranched polyamides from AB₂ units: effect of extra functional groups

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Synthesis and properties of novel soluble aromatic polyamides containing 4-aryl-2,6-diphenylpyridine moieties and pendant fluorinated phenoxy groups

Cited by 18 publications

References 41 publications

Fabrication and study of thermal and combustion resistance of DOPO‐functionalized polyamide reinforced with organo‐modified Mg(OH)2 nanoparticles

Fabrication and study of thermal and combustion resistance of DOPO‐functionalized polyamide reinforced with organo‐modified Mg(OH)2 nanoparticles

Functional Aromatic Polyamides

Synthesis and characterization of novel functional hyperbranched polyamides from AB2 units: effect of extra functional groups

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Fabrication and study of thermal and combustion resistance of DOPO‐functionalized polyamide reinforced with organo‐modified Mg(OH)₂ nanoparticles

Fabrication and study of thermal and combustion resistance of DOPO‐functionalized polyamide reinforced with organo‐modified Mg(OH)₂ nanoparticles

Synthesis and characterization of novel functional hyperbranched polyamides from AB₂ units: effect of extra functional groups