The effect of halloysite modification combined with in situ matrix modifications on the structure and properties of polypropylene/halloysite nanocomposites
TL;DR: In this paper, 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.
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Abstract: 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 fur- ther 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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Citations
Recent advance in research on halloysite nanotubes-polymer nanocomposite
TL;DR: Halloysite nanotubes (HNTs) have been used extensively in polymer nanocomposites as mentioned in this paper, where they have shown high tensile and flexural strength, elastic moduli, and improved toughness.
881
Facile hydroxylation of halloysite nanotubes for epoxy nanocomposite applications
TL;DR: In this article, a facile approach to achieve a high level of dispersion of halloysite nanotubes (HNTs) in epoxy by treating HNTs with a low concentration of sodium hydroxide (NaOH) was reported.
135
The Impact of Halloysite on the Thermo-Mechanical Properties of Polymer Composites
Tayser Sumer Gaaz,Abu Bakar Sulong,Abdul Amir H. Kadhum,Ahmed A. Al-Amiery,Mohamed H. Nassir,Ahed Hameed Jaaz +5 more
TL;DR: Both the mechanical and thermal properties of polymers were remarkably improved when mixed with HNTs, such as ultimate strength, elastic modulus, impact strength and thermal stability.
109
Effect of halloysite nanotube structure on physical, chemical, structural and biological properties of elastic polycaprolactone/gelatin nanofibers for wound healing applications
Veronika Pavliňáková,Veronika Pavliňáková,Zdenka Fohlerova,David Pavliňák,Viera Khunová,Lucy Vojtová,Lucy Vojtová +6 more
TL;DR: All HNT modified nanofibers have been confirmed as non-cytotoxic based on the interaction with mouse fibroblasts NIH-3T3 cells and therefore suitable for biomedical applications, e.g. as wound healing coverings with controlled drug delivery.
74
Preparation and characterization of vulcanized silicone rubber/halloysite nanotube nanocomposites: Effect of matrix hardness and HNT content
TL;DR: In this paper, the effects of silicone rubber hardness and HNT loading on the cure characteristics, swelling behavior, dynamic mechanical, thermal and mechanical properties of the resulting rubber compounds were systematically studied by rheometry, DMTA, TGA and tensile testing, respectively.
70
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Thermal stability and flame retardant effects of halloysite nanotubes on poly(propylene)
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