Structural characterization and transport properties of organically modified montmorillonite/polyurethane nanocomposites

Tortora, Mariarosaria; Gorrasi, Giuliana; Vittoria, Vittoria; Galli, Giancarlo; Ritrovati, Stefano; Chiellini, Emo

doi:10.1016/s0032-3861(02)00556-6

Cited by 176 publications

(118 citation statements)

References 28 publications

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“…Several examples of such modifiers are: primary PET ( Utraki ), glass fiber (Unnikrishnan & Sabu, 1998;longzhen et al, 2006;Aghlan, 2003;Gersappe, 2002), maleic anhydride grafted styrene -ethylene/butylene -styrene triblock copolymer (SEBS -g-MA) (Javaid, 2006), poly (ε -caprolactone) ( Guo, 2002), copolymer having at least one block comprising a vinyl aromatic polymer and at least one block comprising a conjugated diene polymer ( Kiatkamjornwong et al, 2002;Shanti, 2002;), polyolefins, recycled polyolefins with proper compatibilization agents (Tortora, 2002;Chen et al, 2002;Chabert et al, 2004;Leszezynsksa et al,2007;Glasel et al, 1999;Chrissopouloe et al, 2005;Qing-ming et al, 2006;Hadal et al, 2004;Conde et al,2003;Place et al, 2003;Fujimoti et al, 2003;). Clear blends must be tailored based on branched slow crystallizing PET and faster crystallizing PET ( Shriroth et al, 2006;Swoboda et al, 2008;Aghlara,2003).…”

Section: Compounds Composites and Nanocomposites Realised By Physicamentioning

confidence: 99%

“…Nanocomposites can be also obtained with CaCO3 (Di Lorenzo, 2007). Experimental models were conceived for understanding the interaction between the polymer and the ranforsant lingaiah, 2005;Tortora et al, 2002). Also, researches are known about the possibility to increase the exfoliation degree of the multilayered silicate, the order degree of the resulted lamellae (Gilmer, 2004;Ren et al, 2003;Rossi, 2002;), the influence of the ranforsant, possible compatibilizer (Giselle, 2005;Hambir, 2002;Pegoretti et al, 2004;Schimidt et al, 1999;;) The parameters of the reactive processing have a critical role on the obtained results (Hong Jun, 2007).…”

Section: Compounds Composites and Nanocomposites Realised By Physicamentioning

confidence: 99%

See 1 more Smart Citation

Overview on Mechanical Recycling by Chain Extension of POSTC-PET Bottles

Dimonie¹,

Socoteanu²,

Pop³

et al. 2012

Material Recycling - Trends and Perspectives

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Section: Compounds Composites and Nanocomposites Realised By Physicamentioning

confidence: 99%

Section: Compounds Composites and Nanocomposites Realised By Physicamentioning

confidence: 99%

Overview on Mechanical Recycling by Chain Extension of POSTC-PET Bottles

Dimonie¹,

Socoteanu²,

Pop³

et al. 2012

Material Recycling - Trends and Perspectives

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“…In the area of nanomaterials, nanoclays attracted great attention, as they are abundant in nature and readily available [1] [2] [3] [4] [5]. Moreover, Turkey has a great potential having good resources of clays [1].…”

Section: Introductionmentioning

confidence: 99%

Modification of Clay Crystal Structure with Different Alcohols

Seydibeyoğlu¹,

Demiroglu²,

Atagür³

et al. 2017

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Clays attract attention as a nano size material to reinforce the polymers and resins. In this study, montmorillonite clay was modified using industrial solvents that are used in the paint industry. It was shown that the water contact angle could be varied from 20˚ to 140˚ which is a real influence for the clay mineral. X-ray diffraction analysis shows that planar basal space could be altered significantly from 12.57 to 15.40 nm showing 22.5% increase in the interlayer spacing and that is really critical for many polymers and coating applications. This study will highlight many new clay nanocomposites and the formation of various clay nanocomposites.

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“…Therefore, the presence of impermeable particles within a diffusive medium lowers the overall rate of transport. For instance, a decrease in the coefficient of permeability has been many times reported [11,32,71,[77][78][79][80][81][82][83][84][85]. This enhancement of the barrier properties has been explained through this tortuous effect because the layered silicates present a very high aspect ratio [66, 70, 74-76, 86, 87].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Polymer Layered Silicate Nanocomposites by Rheology and Permeability Methods: Impact of the Interface Quality

Waché

Klopffer

Gonzalez

2014

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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> Development of Reactive Barrier Polymers against Corrosion for the Oil and Gas Industry: From Formulation to Qualification through the Development of Predictive Multiphysics ModelingDéveloppement de matériaux barrières réactifs contre la corrosion pour l'industrie pétrolière : de la formulation à la qualification industrielle en passant par le développement de modèles multiphysiques prédictifs Abstract -Polymer clay nanocomposites are mostly described as materials with improved properties. However, many studies are not concluding about the possible benefits. This work reports permeability measurements on different polyolefins nanocomposites. Clay exfoliation has been proved by various techniques. Unfortunately, the nanocomposite does not exhibit good barrier properties. Hence, permeability coefficients were found to increase. A poor quality of the interface between filler and medium is likely to be responsible for this degradation. Insufficient interactions between silicate layers and the surrounding polymer lead to preferential pathways for diffusion. Organoclay exfoliation does not necessarily lead to better barrier properties. A good quality of the interface between polymer and filler is required to reach a high performance level. The standard techniques used to characterize exfoliation degree do not permit to highlight this kind of phenomena.Re´sume´-Caracte´risation de nanocomposites polyme`re silicate par des me´thodes de rhe´ologie et de perme´abilite´: roˆle de la qualite´de l'interface -Les nanocomposites polyme`re argile sont ge´ne´ralement de´crits comme des mate´riaux aux proprie´te´s ame´liore´es. Cependant de nombreuses e´tudes ne sont pas force´ment concluantes quant aux be´ne´fices attendus. Le pre´sent travail rapporte des mesures de perme´abilite´sur diffe´rents nanocomposites a`matrice polyole´fine. L'exfoliation de l'argile a e´te´e´tablie graˆce a`diverses techniques. Malheureusement les nanocomposites ne pre´sentent pas de meilleures proprie´te´s barrie`re. Plus spe´cifiquement une augmentation des coefficients de perme´abilite´a e´te´constate´e. Une mauvaise qualite´de l'interface entre l'argile et la matrice est probablement responsable de cette de´gradation. Une interaction insuffisante entre les feuillets de silicate et le polyme`re les entourant entraıˆne la formation de chemins pre´fe´rentiels de diffusion. L'exfoliation d'argile organophile n'est donc pas suffisante pour conduire a`l'obtention de meilleures proprie´te´s barrie`re. Une bonne qualited e l'interface entre le polyme`re et la charge est ne´cessaire pour atteindre de bonnes performances. Les techniques classiques qui caracte´risent l'exfoliation ne permettent pas de mettre en avant ce type de phe´nome`ne.

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Structural characterization and transport properties of organically modified montmorillonite/polyurethane nanocomposites

Cited by 176 publications

References 28 publications

Overview on Mechanical Recycling by Chain Extension of POSTC-PET Bottles

Overview on Mechanical Recycling by Chain Extension of POSTC-PET Bottles

Modification of Clay Crystal Structure with Different Alcohols

Characterization of Polymer Layered Silicate Nanocomposites by Rheology and Permeability Methods: Impact of the Interface Quality

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