Structure and Properties of Poly(vinyl chloride)/Halloysite Nanotubes Nanocomposites

Liu, Cong; Luo, Yuanfang; Jia, Zhixin; Li, Shuangquan; Guo, Baochun; Jia, Demin

doi:10.1080/00222348.2011.564106

Cited by 21 publications

(19 citation statements)

References 37 publications

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“…The plasticization time of PVC/HNTs nanocomposites is found to be longer than that of the neat PVC. This result is contrary to a previous finding in PVC/HNTs nanocomposites prepared by the direct melt blending . In this study, PVC/HNTs nanocomposites are synthesized via in situ polymerization and the CPA of the resin particles decrease, therefore the required time for PVC particles to fuse together is lengthened.…”

Section: Resultscontrasting

confidence: 75%

“…Halloysite nanotubes (HNTs) are a type of natural aluminoslicate nanotube and have received much attention as a new kind of nanofiller for polymers in recently. It is found that HNTs could increase the strength, modulus, toughness, and thermal properties of PVC . Comparing with synthesized nanotubes, the naturally occurring HNTs are much cheaper and easily available.…”

Section: Introductionmentioning

confidence: 99%

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Particle configuration and properties of poly(vinyl chloride)/halloysite nanotubes nanocomposites via in situ suspension polymerization

et al. 2013

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Poly(vinyl chloride) (PVC)/halloysite nanotubes (HNTs) nanocomposites were synthesized by in situ suspension polymerization of vinyl chloride (VC) in the presence of HNTs. The microstructure, mean particle size, and cold plasticizer absorption (CPA) of these resins and the rheological property, mechanical properties and thermal properties of PVC/HNTs nanocomposites were investigated. The results show that the mean particle size, the degree of porosity, and the CPA of PVC resins decrease with the addition of HNTs. The plasticization time and the equilibrium torque of PVC/HNTs nanocomposites are found to be longer and higher than that for the neat PVC. HNTs are uniformly distributed in the PVC matrix and effective in toughening and stiffening PVC nanocomposites when the addition of HNTs is 4.0 wt% or less. The glass transition temperatures of the PVC/HNTs nanocomposites were nearly identical to that of pure PVC. POLYM. COMPOS.,

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Section: Resultscontrasting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Particle configuration and properties of poly(vinyl chloride)/halloysite nanotubes nanocomposites via in situ suspension polymerization

et al. 2013

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“…HNTs do not require exfoliation because of their unique tubular structure and contain a few hydroxyl groups on the outer surface. Various polymer nanocomposites reinforced with HNTs have been investigated in thermoplastics [18,[21][22][23][24][25], thermosets [26][27][28][29], and elastomers [30,31]. As a result, Young's modulus, tensile strength, thermal stability, and fire-retardant properties are often improved.…”

Section: Introductionmentioning

confidence: 99%

Tribological and mechanical properties of polyamide-11/halloysite nanotube nanocomposites

Sahnoune

Kaci

Taguet

et al. 2018

Journal of Polymer Engineering

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AbstractThis article reports some morphological, tribological, and mechanical data on polyamide-11(PA11)/halloysite nanotube (HNT) nanocomposites prepared by melt-compounding. HNTs extracted from the Djebel Debbagh deposit in Algeria were incorporated into the polymer at 1, 3, and 5 wt%. For comparison, commercial HNTs were also used under the same processing conditions. Scanning electron microscopy showed that both HNTs were homogeneously dispersed in the PA11 matrix, despite the presence of few aggregates, in particular at higher filler contents. The tribological properties were significantly improved, resulting in a decrease in the friction coefficient and the wear rate characteristics due to the lubricating effect of HNTs. This is consistent with optical profilometry data, which evidenced the impact of both types of HNTs on the surface topography of the nanocomposite samples, in which the main wear process was plastic deformation. Furthermore, Young’s modulus and tensile strength were observed to increase with the filler content, but to the detriment of elongation at break and impact strength. Regarding the whole data, the raw Algerian halloysite led to interesting results in PA11 nanocomposites, thus revealing its potential in polymer engineering nanotechnology.

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“…A further difference between the layered silicatelike montmorillonite (MMT) and halloysite is the significantly lower cation exchange capacity (CEC) of HNT for modification via ionic exchange. However, in halloysite, nanocomposites with highly polar polymer contents [9][10][11][12], such as PVC [9,10], PA [11,12], or epoxy [13], require no modification/ treatment of the halloysite for the preparation of melt-mixed polymer nanocomposites with well distributed HNT. With non-polar polyolefins such as PP, due to the highly hydrophobic nature of PP, it is necessary to modify not only the halloysite [14][15][16][17], but also the polymer matrix to increase the polarity of PP [18][19][20][21].…”

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confidence: 99%

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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Structure and Properties of Poly(vinyl chloride)/Halloysite Nanotubes Nanocomposites

Cited by 21 publications

References 37 publications

Particle configuration and properties of poly(vinyl chloride)/halloysite nanotubes nanocomposites via in situ suspension polymerization

Particle configuration and properties of poly(vinyl chloride)/halloysite nanotubes nanocomposites via in situ suspension polymerization

Tribological and mechanical properties of polyamide-11/halloysite nanotube nanocomposites

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

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