Fracture of ultrafine calcium carbonate/polypropylene composites

Levita, G.; Marchetti, A.; Lazzeri, Andrea

doi:10.1002/pc.750100106

Cited by 109 publications

(72 citation statements)

References 23 publications

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“…8,9 This, together with the effect of heterogeneous nucleation at the silicate-matrix interface, leads to the fine semicrystalline structure and relatively high tie-molecule density. 10 On the other hand, with a high silicate content crazing is dominant, which is constrained by the nanofillers due to the difficulty in initiation and growth. 11,12 Increase in cooling rate also tends to promote ␥ crystal form, while the contribution of the ␣ crystal form can still be significant.…”

Section: Introductionmentioning

confidence: 99%

Essential fracture work of nylon 6‐silicate nanocomposites

Qiao

Avlar

Chakravarthula

2004

J of Applied Polymer Sci

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ABSTRACT:In a fracture experiment of polymers, the total fracture work usually consists of an essential part associated with the plastic deformation at the crack tip and a nonessential part related to the viscous relaxation in the background. In this article, the essential fracture work in nylon 6-silicate nanocomposites is measured through a series of double-notched-sample (DNS) tests. The samples are of different silicate contents and crystallization conditions.As the cooling rate rises, the essential work is nearly constant while the total fracture work increases considerably, which should be attributed to the change in effective viscosity. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 95: 815-819, 2005

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Section: Introductionmentioning

confidence: 99%

Essential fracture work of nylon 6‐silicate nanocomposites

Qiao

Avlar

Chakravarthula

2004

J of Applied Polymer Sci

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“…Further propagation of the crack, needed higher tension. It was mentioned that the size of the filler was important to be able to interact with the crack [168].…”

Section: Toughnessmentioning

confidence: 99%

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

Kashfipour

Mehra

Zhu

2018

Adv Compos Hybrid Mater

157

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Composite materials and especially polymer composites are widely used in daily life and different industries due to their vastly different properties and design flexibility. It is known that the properties of the composites are strongly related to the properties of its constituents. However, it has been reported in many studies, experimentally and by simulations, that the characteristics of the composites do not follow the rule of mixing. It means that in addition to properties of the constituents, there are other parameters affecting the final physicochemical properties of composites. The interfacial interactions between fillers and host is one of the factors which can strongly affect the properties of the composite. In this review, we summarized the type of interactions between the constituents, their improvement techniques, interaction measurement methods, and the effects of interfacial interactions on thermal, mechanical, and electrical properties of composites.

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“…2,3 Calcite can grow or dissolve rapidly depending on its environment 4 , and plays a fundamental role in preserving the biosphere through its ability to regulate ocean acidification. 5 The dynamics of the physico-chemical transformations occurring at its surface is also key to countless industrial processes, for example in the polymer industry, 6 cement manufacturing, 7 nuclear waste storage, 8,9 waste water treatment 10 , and in the petroleum industry, given its natural abundance in oil reservoirs 11 .…”

Section: Introductionmentioning

confidence: 99%

Growth and Dissolution of Calcite in the Presence of Adsorbed Stearic Acid

Ricci¹,

Segura²,

Erickson³

et al. 2015

Langmuir

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The interaction of organic molecules with the surface of calcite plays a central role in many geochemical, petrochemical and industrial processes and in biomineralization. Adsorbed organics, typically fatty acids, can interfere with the evolution of calcite when immersed in aqueous solutions. Here we use atomic force microscopy in liquid to explore in real-time the evolution of the (101 ത 4) surface of calcite covered with various densities of stearic acid and exposed to different saline solutions. Our results show that the stearic acid molecules tend to act as 'pinning points' on the calcite's surface and slow down the crystal's restructuring kinetics. Depending on the amount of material adsorbed, the organic molecules can form monolayers or bilayer islands that become embedded into the growing crystal. The growth process can also displaces the organic molecules and actively concentrate them into stacked multilayers. Our results provide molecular-level insights into the interplay between the adsorbed fatty acid molecules and the evolving calcite crystal, highlighting mechanisms that could have important implications for several biochemical and geochemical processes and for the oil industry.

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Fracture of ultrafine calcium carbonate/polypropylene composites

Cited by 109 publications

References 23 publications

Essential fracture work of nylon 6‐silicate nanocomposites

Essential fracture work of nylon 6‐silicate nanocomposites

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

Growth and Dissolution of Calcite in the Presence of Adsorbed Stearic Acid

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