Polyolefin-Based Composites by Polymerization-Filling Technique

Dubois, Philippe; Alexandre, Michaël; Hindryckx, François; Jérôme, Robert

doi:10.1080/15583729808546031

Cited by 39 publications

(16 citation statements)

References 85 publications

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“…Use of the polymerization filling technique has also been reported for the synthesis of polyolefin nanocomposites by in-situ polymerization [74]. In this technique, a Zieler-Natta or any other co-ordination catalyst is anchored to the surface of the layered silicates.…”

Section: Nanocomposite Preparationmentioning

confidence: 99%

“…In one such instance, when the polymerization of ethylene was carried out in the absence of any chain transfer agent, ultra high molecular weight polyethylene-silicate nanocomposite was achieved, which could not be processed further. However, by adding hydrogen to the system, the molecular weight of the polymer matrix could be reduced and the processability also improved [74]. Similarly, the use of palladium based complex and synthetic fluorohectorite as polymerization catalyst and inorganic component for the generation of polyethylene nanocomposites have been reported [75].…”

Section: Nanocomposite Preparationmentioning

confidence: 99%

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Polymer Layered Silicate Nanocomposites: A Review

2009

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This review aims to present recent advances in the synthesis and structure characterization as well as the properties of polymer layered silicate nanocomposites. The advent of polymer layered silicate nanocomposites has revolutionized research into polymer composite materials. Nanocomposites are organic-inorganic hybrid materials in which at least one dimension of the filler is less than 100 nm. A number of synthesis routes have been developed in the recent years to prepare these materials, which include intercalation of polymers or pre-polymers from solution, in-situ polymerization, melt intercalation etc. The nanocomposites where the filler platelets can be dispersed in the polymer at the nanometer scale owing to the specific filler surface modifications, exhibit significant improvement in the composite properties, which include enhanced mechanical strength, gas barrier, thermal stability, flame retardancy etc. Only a small amount of filler is generally required for the enhancement in the properties, which helps the composite materials retain transparency and low density.

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Section: Nanocomposite Preparationmentioning

confidence: 99%

Section: Nanocomposite Preparationmentioning

confidence: 99%

Polymer Layered Silicate Nanocomposites: A Review

2009

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“…Such disadvantages can be solved by in situ polymerization techniques, where the polymer is generated in a medium with the dispersed filler . An advanced type of the latter is the polymerization filling technique . The target here is to progress polymerization at the surface of the filler, thereby encapsulating each particle and physically separating it from others.…”

Section: Introductionmentioning

confidence: 99%

Isotactic polypropylene metal oxide and silica nanocomposites by a two‐step process comprising in situ olefin polymerization and melt compounding

Käselau

Scheel

Petersson

et al. 2019

Polymer International

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Nanocomposites of isotactic polypropylene (iPP) with 0.5 wt% filler of MgO@Mg(OH)2 (35 nm) or silicon dioxide (20–60 nm) or barium titanate (50 nm) nanoparticles were obtained from melt compounding of filler masterbatches with commercial iPP. The masterbatches with 5 wt% nanofiller were prepared in an in situ polymerization procedure using a metallocene/methylaluminoxane (MAO) catalyst system that was supported on the respective oxides. The original agglomerates of the nanoparticles were broken up by treatment with dibutylmagnesium for MgO@Mg(OH)2, and with ultrasound in the presence of MAO for SiO2 and BaTiO3. The tacticity (98% mmmm) of the in situ formed PP was not influenced by the presence of the nanofillers. Scanning electron microscopy and energy‐dispersive X‐ray spectroscopy mapping show a fine dispersion of single particles and small clouds or clusters. The primary nanoparticles appear to be surrounded by polymer. The elongation at break was decreased to 50, 17 and 9% for MgO@Mg(OH)2), SiO2 and BaTiO3, respectively. After melt compounding with iPP, a homogeneous single‐particle distribution of the oxidic nanoparticles was found in the resulting composites with 0.5 wt% filler content. © 2019 Society of Chemical Industry

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“…Most of the recently developed new approaches and nanotechnological methods in polymer synthesis and processing are related to various synthetic pathways and mechanisms for the formation of nanostructures in polymer/nanofiller hybrids and nanocomposites, predominantly containing anhydride/carboxyl functionalized copolymers such as alternating, random and graft copolymers of maleic anhydride and its isostructural analogues . The results of these studies, in particular, on polymer layered silicate nanocomposites have already been summarized by several excellent reviews . Smectic clays, particularly montmorillonite (MMT) minerals and their organic derivatives, serve as good nanoclay fillers owing to their ease of dispersion in the organic matrix.…”

Section: Introductionmentioning

confidence: 99%

Functional copolymer/organo-MMT nanoarchitectures. XIX. Nanofabrication and characterization of poly(MA-alt -1-octadecene)-g -PLA layered silicate nanocomposites with nanoporous core-shell morphology

Rzayev

Salimi

Eğri

et al. 2014

Polym. Adv. Technol.

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Novel bioengineering functional copolymer‐g‐biopolymer‐based layered silicate nanocomposites were fabricated by catalytic interlamellar bulk graft copolymerization of L‐lactic acid (LA) monomer onto alternating copolymer of maleic anhydride (MA) with 1‐octadecene as a reactive matrix polymer in the presence of preintercalated LA…organo‐MMT clay (reactive ODA‐MMT and non‐reactive DMDA‐MMT) complexes as nanofillers and tin(oct)2 as a catalyst under vacuum at 80°C. To characterize the functional copolymer layered silicate nanocomposites and understand the mechanism of in situ processing, interfacial interactions and nanostructure formation in these nanosystems, we have utilized a combination of variuous methods such as FT‐IR spectroscopy, X‐ray diffraction (XRD), dynamic mechanical (DMA), thermal (DSC and TGA‐DTG), SEM and TEM morphology. It was found that in situ graft copolymerization occurred through the following steps: (i) esterification of anhydride units of copolymer with LA; (ii) intercalation of LA between silicate galleries; (iii) intercalation of matrix copolymer into silicate layers through in situ amidization of anhydride units with octadecyl amine intercalant; and (iv) interlamellar graft copolymerization via in situ intercalating/exfoliating processing. The main properties and observed micro‐ and nanoporous surface and internal core–shell morphology of the nanocomposites significantly depend on the origin of MMT clays and type of in situ processing (ion exchanging, amidization reaction, strong H‐bonding and self‐organized hydrophobic/hydrophilic interfacial interactions). This developed approach can be applied to a wide range of anhydride‐containing copolymers such as random, alternating and graft copolymers of MA to synthesize new generation of polymer‐g‐biopolymer silicate layered nanocomposites and nanofibers for nanoengineering and nanomedicine applications. Copyright © 2014 John Wiley & Sons, Ltd.

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Polyolefin-Based Composites by Polymerization-Filling Technique

Cited by 39 publications

References 85 publications

Polymer Layered Silicate Nanocomposites: A Review

Polymer Layered Silicate Nanocomposites: A Review

Isotactic polypropylene metal oxide and silica nanocomposites by a two‐step process comprising in situ olefin polymerization and melt compounding

Functional copolymer/organo-MMT nanoarchitectures. XIX. Nanofabrication and characterization of poly(MA-alt -1-octadecene)-g -PLA layered silicate nanocomposites with nanoporous core-shell morphology

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