Morphology of Rubber–Clay Nanocomposites

Galimberti, Maurizio; Cipolletti, V.; Giudice, Simona

doi:10.1002/9781118092866.ch7

Cited by 14 publications

(27 citation statements)

References 113 publications

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“…A satisfactory dispersion was achieved when the inorganic clays contained a lipophilic modifier [57]. With primary alkenylamines, exfoliated platelets and aggregates composed of different number of platelets were observed in the final composites, commenting that the C18 alkenyl group promoted a better dispersion with respect to the shorter ones.…”

Section: Melt Blending From Clays and Organoclaysmentioning

confidence: 76%

“…A rationalization is proposed in ref. [57]. To summarize, the mentioned even dispersion was achieved in NR, BR, SBR, NBR, BIMS and EPDM with a primary alkenyl amine as the clay modifier.…”

Section: Solution Blending From Clays and Organoclaysmentioning

confidence: 99%

“…The preparation of the organoclay in situ in the rubber matrix was reported by Galimberti [57,[64][65][66][67], by adopting the melt blending approach, with all the processing technologies mentioned in paragraph 5.2. An even clay dispersion was achieved in the rubber matrix and the organoclays revealed a lower number of stacked layers.…”

Section: Formation Of Organoclays In Situ In the Rubber Matrixmentioning

confidence: 99%

“…The overall picture of RCN, that is proposed for PCN is shown in Figure 5. The study of the interlayer distance is performed through XRD and TEM analysis [57]. In particular, as discussed in paragraph 3, the modification of the interlayer distance, determined from XRD patterns, is taken as the evidence of the occurring of modifications in the interlayer space.…”

Section: Structure Of Rcnmentioning

confidence: 99%

“…In SBR as the matrix, a hybrid sepiolite-silica filler system was adopted [116]. Hybrid OC/CB filler systems were used in the following matrices: SBR [117][118][119], brominated poly(isobutylene-co-paramethylstyrene) rubber [117], IR [50,57,120], NR [67,121] NR/SBR blend [122], chlorobutyl rubber [123], ENR [124], EPDM [125] (Malas and Das, 2012). In some of these works [50,57,[120][121][122], CB was used at a level typical of commercial applications (higher than 50 phr).…”

Section: Synergistics Effects Between Clays and Nanostructured Fillersmentioning

confidence: 99%

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Rubber‐Clay Nanocomposites

Galimberti¹

2011

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Section: Melt Blending From Clays and Organoclaysmentioning

confidence: 76%

“…A rationalization is proposed in ref. [57]. To summarize, the mentioned even dispersion was achieved in NR, BR, SBR, NBR, BIMS and EPDM with a primary alkenyl amine as the clay modifier.…”

Section: Solution Blending From Clays and Organoclaysmentioning

confidence: 99%

Section: Formation Of Organoclays In Situ In the Rubber Matrixmentioning

confidence: 99%

Section: Structure Of Rcnmentioning

confidence: 99%

Section: Synergistics Effects Between Clays and Nanostructured Fillersmentioning

confidence: 99%

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Rubber‐Clay Nanocomposites

Galimberti¹

2011

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The role of interlayer grafting on the mechanical properties of magadiite/styrene‐butadiene rubber composites

Mao

Ploehn

2017

J of Applied Polymer Sci

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This work examines the mechanisms by which magadiite (MGD), a synthetic layered silicate, acts as an active filler to provide high levels of mechanical reinforcement in styrene‐butadiene rubber (SBR) composites. Cetyltrimethylammonium (CTA+) expands the MGD layer spacing and promotes intercalation of SBR and silane coupling agent (Si69); the resulting CMGD/SBR composites have greater tensile moduli than comparable silica/SBR composites. CMGD was reacted in solution with Si69 (or MPTES) to prepare “pre‐grafted” MGD with varying levels of interlayer silane functionalization (SMGD). If the silane graft density is relatively low, the resulting SMGD/SBR composite has mechanical properties comparable to CMGD composites prepared with Si69 added during batch mixing. However, SMGD with high silane graft density does not permit SBR intercalation and produces composites with inferior mechanical properties, demonstrating the necessity of silane‐mediated interlayer grafting. Omitting Si69 from the formulation dramatically reduces the level of mechanical reinforcement as measured by DMA and tensile testing. Adding extra bulk sulfur (to replace sulfur omitted with Si69) does not produce composites with mechanical properties comparable to CMGD/SBR or SMGD/SBR prepared with Si69. This work demonstrates that silane‐mediated SBR‐MGD grafts within the MGD interlayer space are essential for achieving high levels of mechanical reinforcement in MGD/SBR composites. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45025.

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Development in Air Permeability of Natural Rubber Tire Tube Compound by Adding Variable Dosage of Nanoclay

Vasudeo

et al. 2016

Macromolecular Symposia

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Summary: Any material consisting of two or more components with different properties and distinct boundaries between their components can be referred to as a composite material. There are two groups of composites the first group comprises composites that are known as "filled materials", the main feature of these materials is the existence of some basic or matrix material whose properties are improved by filling it with some particles and second group composites involves so called "reinforced materials". The basic components of these materials are long and thin fibres possessing high strength and stiffness. Filler (particulate or thin fibers) is a solid material capable of changing the physical and chemical properties of materials by surface interaction or its lack thereof and by its own physical characteristics. High stiffness means that material exhibits low deformation under loading. Stiffness is an important property but it should be necessarily high. Ability of structure to have controlled deformation can be also important. Nano engineered polymeric materials are of great interest, rapidly growing new class of materials alternative to conventional filled polymers or polymer blends. Conventional clay plays the role of a loading agent or diluent without property enhancement or reinforcement and hence we have used nanoclay which imparts significant mechanical reinforcement and improved air permeability property for natural rubber based tube compound. Natural rubber/nanoclay along with other additives were mixed in a laboratory mixer for specified time and temperature, by determining rheological and curing properties rubber compounds were molded in to standard dimension sheets using a compression mold and molding machine thereafter specimens were prepared and characterized for hardness, modulus (100%, 200%), tensile strength, tension set, air permeability test and surface morphology.

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Morphology of Rubber–Clay Nanocomposites

Cited by 14 publications

References 113 publications

Rubber‐Clay Nanocomposites

Rubber‐Clay Nanocomposites

The role of interlayer grafting on the mechanical properties of magadiite/styrene‐butadiene rubber composites

Development in Air Permeability of Natural Rubber Tire Tube Compound by Adding Variable Dosage of Nanoclay

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