The Effect of Interfacial Modification on the Properties of Reactively Processed Polypropylene/Clay Nanocomposites

Khünová, Viera; Kelnar, Ivan; Liauw, Christopher M.; Lukáč, P.

doi:10.1163/092764411x584496

Cited by 5 publications

(7 citation statements)

References 18 publications

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“…Table 5, it is apparent that modification with DBMI caused an increase in the strength and the modulus in all nanocomposites studied. This finding is in agreement with the highly effective nature of this reactive interfacial modifier, which also has been found for other composite systems [27][28][29][30]. From Table 4, it is evident that DBMI does not affect the crystallinity of the PP matrix.…”

Section: Effect Of Hnt Modification On the Properties Of The Pp Nanocsupporting

confidence: 89%

“…In the case of in situ matrix modification to increase PP polarity, 1% DBMI was added [27]. The mixing temperature was 200°C, and the rotor speed was 200 rpm.…”

Section: Composite Preparationmentioning

confidence: 99%

“…These results indicate that, to achieve more favorable mechanical behavior, simultaneous modification of the PP matrix is necessary. Based on our earlier work, for this purpose, we used a reactive modifier, 4,4!-diphenyl methylene-dimaleinimide (DBMI) [27][28][29][30]. Table 5, it is apparent that modification with DBMI caused an increase in the strength and the modulus in all nanocomposites studied.…”

Section: Effect Of Hnt Modification On the Properties Of The Pp Nanocmentioning

confidence: 99%

“…In our earlier works, we documented [27][28][29][30] an effective alternative for increasing the PP polarity by the addition of pre-fabricated maleated polypropylene for in situ modification, using bifunctional compounds such as 4,4!-diphenylmethylene dimaleinimide (DBMI) and 1,3-phenylene dimaleimide (BMI). This work highlights the effects of halloysite modification by hexa-decyl-tri-methyl-ammonium-bromide, 3-aminopropyltrimethoxysilane and urea individually as well as in combination using in situ modification of the PP matrix by 4,4!-diphenylmethylene dimaleinimide (DBMI).…”

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confidence: 99%

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The effect of halloysite modification combined with in situ matrix modifications on the structure and properties of polypropylene/halloysite nanocomposites

Khünová¹,

Kristóf²,

Kelnar³

et al. 2013

Express Polym. Lett.

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The effect of various modifications/intercalations of halloysite and the combination of these modifications with in situ PP matrix modification was investigated with respect to the structure and properties of the polypropylene/halloysite nanocomposites. Hexadecyl-tri-methyl-ammonium-bromide (HEDA), 3-aminopropyltrimethoxysilane and urea were used as the intercalators/modifiers. The best intercalation was found for urea, although an unexpected insignificant impact on the mechanical properties also resulted as a consequence of the urea polarity and the significant decrease in PP crystallinity. However, the simultaneous application of 4,4!-diphenylmethylene dimaleinimide (DBMI) brought about an increase in the mechanical behavior by increasing the halloysite/PP affinity as a result of in situ matrix modification. This effect was further supported by coupling between the PP and halloysite (HNT) in the system containing urea-intercalated HNT. This can be explained by the occurrence of a urea-supported reaction between the imide ring of DBMI and the OH groups of the HNT, which resulted in the best mechanical behaviors achieved in this study

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Section: Effect Of Hnt Modification On the Properties Of The Pp Nanocsupporting

confidence: 89%

“…In the case of in situ matrix modification to increase PP polarity, 1% DBMI was added [27]. The mixing temperature was 200°C, and the rotor speed was 200 rpm.…”

Section: Composite Preparationmentioning

confidence: 99%

Section: Effect Of Hnt Modification On the Properties Of The Pp Nanocmentioning

confidence: 99%

mentioning

confidence: 99%

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The effect of halloysite modification combined with in situ matrix modifications on the structure and properties of polypropylene/halloysite nanocomposites

Khünová¹,

Kristóf²,

Kelnar³

et al. 2013

Express Polym. Lett.

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“…[20][21][22] It is important to notice that the rise in elongation was not detrimental for the Young's modulus response. These results are very important because in most of the composites filled with clays, the polymer elongation at break was dramatically reduced even at low concentrations of filler.…”

Section: Tensile Testssupporting

confidence: 53%

Mechanical and rheological properties of polypropylene/bentonite composites with stearic acid as an interface modifier

Angel

Morales

Navarro‐Pardo

et al. 2015

J of Applied Polymer Sci

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In this study, we present a study of polypropylene/bentonite composites where stearic acid was used as both a surface and interface modifier during the compounding of composites. The concentration of bentonite was 1.5, 2.5, 5.0, and 10 parts per hundred. The composites were characterized by impact resistance and tensile tests, rheological analysis, the dispersion state of the filler observed by optical microscopy, and interaction between bentonite and stearic acid, as analyzed by Fourier transform infrared spectroscopy. No chemical interaction was found between bentonite and stearic acid. Composites with modified bentonite and stearic acid used as interface modifiers increased the elongation at break; these samples also showed better dispersion of the filler in comparison with the other compounds. In addition, stearic acid acted as a lubricant, favoring the interaction of the polymer with the filler and decreasing the viscosity of the compounds.

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Structural evolution of palygorskite for reinforcing the performance of polypropylene

Zhang

Wang

et al. 2022

Composite Interfaces

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The Effect of Interfacial Modification on the Properties of Reactively Processed Polypropylene/Clay Nanocomposites

Cited by 5 publications

References 18 publications

The effect of halloysite modification combined with in situ matrix modifications on the structure and properties of polypropylene/halloysite nanocomposites

The effect of halloysite modification combined with in situ matrix modifications on the structure and properties of polypropylene/halloysite nanocomposites

Mechanical and rheological properties of polypropylene/bentonite composites with stearic acid as an interface modifier

Structural evolution of palygorskite for reinforcing the performance of polypropylene

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