New photosensitive semi aramid/organoclay nanocomposite containing cinnamoyl groups: Synthesis and characterization

Shabanian, Meisam; Basaki, Nemat

doi:10.1016/j.compositesb.2013.04.033

Cited by 31 publications

(21 citation statements)

References 35 publications

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“…However, there are some limiting factors for the processing and application of aramids (aromatic polyamides) (e.g., extremely high glass‐transition temperatures and poor solubility in commonly used organic solvents). These problems have been resolved in the synthesis of semi‐aromatic polyamides . Polyamides are also used as curing agents for epoxy.…”

Section: Introductionmentioning

confidence: 99%

Influence of amine‐terminated additives on thermal and mechanical properties of diglycidyl ether of bisphenol A (DGEBA) cured epoxy

Baig

Akram

Zia

et al. 2019

J of Applied Polymer Sci

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The present work accounts for the influence of aromatic amide oligomers on the inherent brittleness of cured epoxy. Aromatic and aliphatic amine‐terminated amide oligomers have been prepared by condensation polymerization using isophthaloyl dichloride and two different amines. The oligomers have been characterized using Fourier transform infrared spectroscopy and wide angle X‐ray diffraction analysis. Diglycidyl ether of bisphenol A (DGEBA) is cured with a diamine (4,4′‐oxydianiline) by using different weight ratio of oligomers. The FTIR of cured epoxy shows ring opening by the disappearance of oxirane ring peak at 913 cm−1, whereas X‐ray diffraction shows its amorphous phase in the cured state. The thermogravimetric analysis of the resultant composites shows that the thermal stability slightly decreases (467–454 °C) with increasing the oligomer content from 5 to 25 wt %, whereas the mechanical parameters (Young's modulus, tensile strength, impact strength, and elongation at break) increase with increase in the oligomer content. DMA shows lower tanδ values for aliphatic amine‐terminated oligomers for cured epoxy. Two‐phase surface morphology is observed through scanning electron microscopy. Owing to their high mechanical and thermal properties, aromatic amides have observed to greatly influence the mechanical properties of cured epoxy, particularly its brittleness. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48404.

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Section: Introductionmentioning

confidence: 99%

Influence of amine‐terminated additives on thermal and mechanical properties of diglycidyl ether of bisphenol A (DGEBA) cured epoxy

Baig

Akram

Zia

et al. 2019

J of Applied Polymer Sci

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“…Engineering plastics are chosen on the bases of their plentiful properties, including low dielectric constant, long storage periods, and high stiffness, strength, toughness, non‐flammability, conductivity, chemical and solvent resistance, thermo‐oxidative and thermal stability, as well as recyclability as matrices in nanocomposites . The fully aromatic polyamides are kind of super engineering plastics which have most previously mentioned characteristics . Due to their high softening or melting temperatures and their insoluble nature in most organic solvents, their applications are limited .…”

Section: Introductionmentioning

confidence: 99%

Investigating properties of poly (ether‐amide)/MWCNT nanocomposite films containing 2,7‐bis(4‐aminophenoxy)naphthalene and isophthalic segments

Mirsamiei

Faghihi

2018

Polymers for Advanced Techs

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Three nanocomposite films based on aramid (poly (ether‐amide), PEA) and multiwall carbon nanotubes (MWCNT) were prepared via solution casting method using 2,7‐bis(4‐aminophenoxy)naphthalene (4) and isophthalic acid (5) containing various amounts of MWCNT (2, 3, 5 wt.%). To comprehensively analyze the properties of the cast films as well as the monomers, different techniques were employed, namely FT‐IR, 1H NMR, X‐ray diffraction, and field emission scanning electron microscopy. Also, thermal and tensile properties of PEA (6) and nanocomposite films were investigated using thermogravimetric analysis and mechanical analysis, respectively. The morphology, thermal, and mechanical properties of nanocomposite films approved that MWCNT had well dispersion in the PEA matrix and showed a synergistic effect on improving all of the investigated properties. Based on the thermogravimetric analysis results, employing MWCNT caused to increase in the char yields from 61 (in the neat PEA) to 66 (in the PEA /MWCNT nanocomposite 5 wt.%) under the nitrogen atmosphere. In comparison to the pristine PEA (426°C), the temperature at 10 losses mass % (T10) was increased from 530°C to 576°C, with 2 to 5 wt.% of MWCNT. Mechanical analysis revealed that the tensile strength and initial modulus were improved by incorporating MWCNT into PEA (81.70–93.40 MPa and 2.10–2.22 GPa, respectively). Electrical conductivity of the PEA/MWCNT nanocomposites was displayed maximum value in the 5 wt.%, showing satisfactory value in many application areas. The X‐ray diffraction technique was employed to study the crystalline structure of the prepared nanocomposite films as well as PEA. In addition, the electrochemical impedance spectroscopy study demonstrated that the prepared nanocomposites had significant impedance improvement in the presence of MWCNTs.

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“…Recently many basic and applied investigations have focused on improving their processability and solubility, while retaining their prominent thermal and mechanical properties, to widen the range of the technological applications of aromatic polyamides . Several approaches have been taken to prepare processable polyamides, for example by incorporating flexible ether linkages and sulfone groups in the polymer backbone .…”

Section: Introductionmentioning

confidence: 99%

Amide-acid functional SiO₂nanocomposites based on new semi-crystalline poly(ether-sulfone-amide): thermal, combustion and mechanical studies

2016

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New amide–acid functional SiO2 nanoparticle (FSNP)‐reinforced semi‐crystalline aliphatic–aromatic poly(ether‐sulfone‐amide) (PESA) was synthesized using a solution method in dimethylformamide. The surfaces of SiO2 nanoparticles were functionalized with phthalic anhydride, and subsequently PESA was synthesized using direct polymerization with good yield and desired molar mass. PESA/SiO2 nanocomposites (PSNCs) were prepared with three different contents of FSNP and the morphology and mechanical, thermal and combustion properties of the PSNCs were studied. The results of X‐ray diffraction, field‐emission scanning electron microscopy and transmission electron microscopy showed a uniform dispersion for FSNP in the PESA matrix. According to the results of mechanical tests, the tensile strength and the Young's modulus of PESA were enhanced by FSNP loading. Thermogravimetric analysis and derivative thermogravimetry results showed a substantial improvement in thermal properties of PESA. The temperature at 5% mass loss was increased from 371.7 to 395.8 °C for the PSNC containing 8 mass% of FSNP, as well as the char yield being enhanced greatly, which was about 30% higher than that of neat PESA. Significant improvements in combustion properties were observed for PSNCs from microscale combustion calorimetry. The peak heat release rate showed an obvious improvement and decreased by about 57% compared to that of neat PESA on 8 mass% loading of FSNP. © 2016 Society of Chemical Industry

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New photosensitive semi aramid/organoclay nanocomposite containing cinnamoyl groups: Synthesis and characterization

Cited by 31 publications

References 35 publications

Influence of amine‐terminated additives on thermal and mechanical properties of diglycidyl ether of bisphenol A (DGEBA) cured epoxy

Influence of amine‐terminated additives on thermal and mechanical properties of diglycidyl ether of bisphenol A (DGEBA) cured epoxy

Investigating properties of poly (ether‐amide)/MWCNT nanocomposite films containing 2,7‐bis(4‐aminophenoxy)naphthalene and isophthalic segments

Amide-acid functional SiO₂nanocomposites based on new semi-crystalline poly(ether-sulfone-amide): thermal, combustion and mechanical studies

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New photosensitive semi aramid/organoclay nanocomposite containing cinnamoyl groups: Synthesis and characterization

Cited by 31 publications

References 35 publications

Influence of amine‐terminated additives on thermal and mechanical properties of diglycidyl ether of bisphenol A (DGEBA) cured epoxy

Influence of amine‐terminated additives on thermal and mechanical properties of diglycidyl ether of bisphenol A (DGEBA) cured epoxy

Investigating properties of poly (ether‐amide)/MWCNT nanocomposite films containing 2,7‐bis(4‐aminophenoxy)naphthalene and isophthalic segments

Amide-acid functional SiO2nanocomposites based on new semi-crystalline poly(ether-sulfone-amide): thermal, combustion and mechanical studies

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Amide-acid functional SiO₂nanocomposites based on new semi-crystalline poly(ether-sulfone-amide): thermal, combustion and mechanical studies