Syntheses and properties of PI/clay hybrids

Gu, Aiqin; Kuo, Shiao‐Wei; Chang, Feng‐Chih

doi:10.1002/1097-4628(20010307)79:10<1902::aid-app190>3.3.co;2-j

Cited by 25 publications

(36 citation statements)

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“…The use of organo-clay nanoplatelets in polymers to create nanocomposites having properties greater than the parent constituents has been well reported over the past decade [1]. Although nylon 6 has been the primary matrix material investigated [2], other polymer-based clay nanocomposites have been developed with various polymers, such as polypropylene [3], polystyrene [4], and polyimide [5,6]. Since epoxy has a wide range of possible applications in different engineering fields, this article focuses on epoxy/ clay nanocomposites, whose glass transition temperature (T g) is higher than room temperature (RT).…”

Section: Introductionmentioning

confidence: 99%

Intercalation and exfoliation of clay nanoplatelets in epoxy‐based nanocomposites: TEM and XRD observations

Miyagawa

Drzal

Carsello

2006

Polymer Engineering & Sci

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Diglycidyl ether of bisphenol A (DGEBA) and diglycidyl ether of bisphenol F (DGEBF) reinforced with organomontmorillonite clay nanoplatelets were investigated using anhydride-and amine-curing agents. The sonication technique was used to process epoxy/clay nanocomposites. The basal spacing of clay nanoplatelets was observed by wide-angle X-ray scattering (WAXS), small-angle X-ray scattering (SAXS) techniques, and transmission electron microscopy. It was found that the basal spacing of clay nanoplatelets in epoxy matrix was expanded after mixing with either DGEBA/DGEBF or methyltetrahydrophthalic-anhydride (MTHPA) curing agent. The sonication technique provided larger d-spacing of clay nanoplatelets. Because of the different curing temperatures, MTHPA-cured epoxy/clay nanocomposites produced more expanded d-spacing of clay nanoplatelets modified with methyl, tallow, bis(2-hydroxyethyl) quaternary ammonium (MT2EtOH) than triethylenetetraminecured nanocomposites. Depending on the selection of curing agent and organic modification for clay nanoplatelets, the d-spacing was expanded to be up to 8.72 nm. POLYM. ENG. SCI., 46:452-463, 2006. 453 FIG. 2. FTIR spectra of neat epoxy and its clay nanocomposites at different clay compositions. (a) MTHPAcured epoxy nanocomposites and (b) TETA-cured epoxy nanocomposites. 455 FIG. 11. XRD (Rigaku DMAX-A WAXS) diffraction pattern, at small diffraction angle, of organo-montmorillonite clay nanoplatelets (Cloisite 30B), TETA-cured neat epoxy, and their nanocomposites, prepared by the sonication technique at different organo-clay compositions.

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Section: Introductionmentioning

confidence: 99%

Intercalation and exfoliation of clay nanoplatelets in epoxy‐based nanocomposites: TEM and XRD observations

Miyagawa

Drzal

Carsello

2006

Polymer Engineering & Sci

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“…The T 10 also shifts to higher temperature by about 36°C in PhPAN 4 as compared to the neat PhPA. The increase in thermal stability of the nanocomposites with an increasing clay loading can be due to two factors : (1) the significant effect of the organoclay layers on the free volume of the PhPA and (2) restrict the segmental motions of the polymer chains with the confinement of intercalated polymer chains within the clay galleries. The final residual weights in the nanocomposite samples are higher as compared to the neat PhPA.…”

Section: Resultsmentioning

confidence: 99%

Novel nanocomposite based on reactive organoclay and photosensitive aliphatic–aromatic polyamide: Synthesis and characterization

et al. 2014

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Novel polyamide/organoclay nanocomposites were prepared through solution intercalation technique. Reactive organoclay was prepared using Cloisite‐Na+ and protonated form of 4,4′‐diaminodiphenylmethane via ion‐exchange reaction. New photosensitive aliphatic‐aromatic polyamide containing dibenzal acetone moiety was successfully synthesized through direct polycondensation. Flammability and thermal properties of the polyamide and corresponding nanocomposites were studied. Thermogravimetric analysis results indicated improved thermal stability of the nanocomposites compared to the neat polyamide. According to the microscale combustion calorimeter results, the peak heat release rate value has been decreased from 113 to 72 W/g by introducing 2 wt% of the organoclay in the polyamide matrix. POLYM. COMPOS., 36:1502–1509, 2015. © 2014 Society of Plastics Engineers

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“…When the content of OREC is higher, much more aggregated OREC exists in the composites, and the dielectric constant may increase. Figure 15b shows that the addition of OREC may slightly increase the dielectric loss in frequency range of 10 2 −10 6 Hz, the reasons are the extra free volume at the OREC/resin interface, the introduction of impurity and structural heterogeneity [39].…”

Section: Resultsmentioning

confidence: 99%

Properties and structures of novel cyanate ester/organic rectorite nanocomposites

Yuan

Liang

et al. 2012

Polymer Engineering & Sci

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Organic rectorite (OREC) was applied to bisphenol A dicyanate ester (BADCy) resin to develop a novel BADCy/OREC system. The influence of OREC on the reactivity of BADCy was discussed. The morphologies of cured BADCy/OREC systems were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The static and dynamic mechanical properties as well as the hot water resistance of cured BADCy/OREC systems were evaluated. Results indicate that the addition of OREC can catalyze the reaction of BDACy resin. The intercalated structure and exfoliated structure of silicate platelets may be formed in the cured BADCy/ OREC composites. The suitable amount of OREC can improve the flexural strength, the impact resistance and the hot water resistance of cured BADCy. OREC can maintain the glass transition temperature (T g ) and have slight influence on the dielectric property of cured BADCy.

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Syntheses and properties of PI/clay hybrids

Cited by 25 publications

References 0 publications

Intercalation and exfoliation of clay nanoplatelets in epoxy‐based nanocomposites: TEM and XRD observations

Intercalation and exfoliation of clay nanoplatelets in epoxy‐based nanocomposites: TEM and XRD observations

Novel nanocomposite based on reactive organoclay and photosensitive aliphatic–aromatic polyamide: Synthesis and characterization

Properties and structures of novel cyanate ester/organic rectorite nanocomposites

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