Migration of organic compounds from PET/clay nanocomposites: influences of clay type, content and dispersion state

2012 ◽  
Vol 21 (10) ◽  
pp. 669-681 ◽  
Author(s):  
Siamak Motahari ◽  
Lida Dornajafi ◽  
Iman Fotovat Ahmadi
Keyword(s):  
Organic Compounds ◽  
Clay Nanocomposites ◽  
Dispersion State ◽  
Clay Type

Effect of clay type and polymer matrix on microstructure and tensile properties of PLA/LLDPE/clay nanocomposites

2013 ◽  
Vol 130 (2) ◽  
pp. 749-758 ◽  
Author(s):  
Ladan As'habi ◽  
Seyed Hassan Jafari ◽  
Hossein Ali Khonakdar ◽  
Bernd Kretzschmar ◽  
Udo Wagenknecht ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Polymer Matrix ◽  
Clay Nanocomposites ◽  
Clay Type

scholarly journals The Effect of Clay Type on the Physicochemical Properties of New Hydrogel Clay Nanocomposites

2018 ◽  
Author(s):  
Tatiana Munteanu ◽  
Claudia Mihaela Ninciuleanu ◽  
Ioana Catalina Gifu ◽  
Bogdan Trica ◽  
Elvira Alexandrescu ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Clay Nanocomposites ◽  
Clay Type

The effect of clay type and of clay-masterbatch product in the preparation of polypropylene/clay nanocomposites

2011 ◽  
Vol 122 (3) ◽  
pp. 2013-2025 ◽  
Author(s):  
Saddys Rodríguez-Llamazares ◽  
Bernabé L. Rivas ◽  
Mónica Pérez ◽  
Florence Perrin-Sarazin ◽  
Alvaro Maldonado ◽  
...  
Keyword(s):  
Clay Nanocomposites ◽  
Clay Type

Effect of Clay Type on Structure and Properties of Poly(methyl methacrylate)/Clay Nanocomposites

2006 ◽  
Vol 291 (6) ◽  
pp. 602-611 ◽  
Author(s):  
Mayu Si ◽  
Michael Goldman ◽  
Gregory Rudomen ◽  
Mikhail Y. Gelfer ◽  
Jonathan C. Sokolov ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Clay Nanocomposites ◽  
Structure And Properties ◽  
Poly Methyl Methacrylate ◽  
Clay Type

Surface Modification of Polymer-Clay Nanocomposites by Excimer Laser Ablation

2011 ◽  
Author(s):  
I-Ta Chang ◽  
Erol Sancaktar
Keyword(s):  
Structure Formation ◽  
Excimer Laser ◽  
Surface Structures ◽  
Clay Nanocomposites ◽  
Nano Structure ◽  
Clay Nanoparticles ◽  
Dispersion State ◽  
Molded Parts ◽  
Injection Molded ◽  
Krf Excimer Laser

This paper investigates the effects of nanoclay (Organically Modified Montmorillonite -OMMT) dispersion state and morphology of nanocomposites on laser induced surface micro/nano structure formation and modification of Polystyrene-Clay Nanocomposites at various OMMT concentrations. Injection molded sample surfaces were irradiated by a 248 nm KrF excimer laser in air. Scanning electron microscopy, atomic force microscopy and Fourier Transform Infrared (FTIR) spectroscopy with attenuated total reflectance accessory were utilized to analyze the ablated surface. Results show that, in general, better dispersion of OMMT leads to less continuous surface structures and more pronounced carbonyl regions on FTIR spectra. Clay nanoparticles are exposed on ablated surfaces and affect surface structure formation after irradiation by laser. A mechanism for the formation of excimer laser induced surface structures on injection molded parts is thus proposed.

Effect of the Compatibilizer on Clay Dispersion in Polypropylene/Clay Nanocomposites

2012 ◽  
Vol 622-623 ◽  
pp. 847-850
Author(s):  
Sedigheh Bagheri-Kazemabad ◽  
Alireza Khavandi ◽  
Daniel Fox ◽  
Yan Hui Chen ◽  
Hong Zhou Zhang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Clay Nanocomposites ◽  
X Ray Diffraction ◽  
Melt Mixing ◽  
Rheological Analysis ◽  
X Ray ◽  
Transmission Electron ◽  
Dispersion State ◽  
Clay Layers ◽  
Better Than

Polypropylene (PP)/clay nanocomposites were prepared via a melt mixing technique. Two types of compatibilizers, namely poly (ethyleneco-octene) (EOC-g-MA) and polypropylene grafted maleic anhydride (PP-g-MA), were selected to facilitate the nanocomposite formation. X-ray diffraction and transmission electron microscopy in conjunction with rheological analysis were used for studying the dispersion state of clay layers in these nanocomposites. The results showed with the introduction of EOC-g-MA to PP/clay, clay was dispersed better than the presence of PP-g-MA.

scholarly journals UPGRADATION OF UNSATURATED POLYESTER RESIN USING NANOCLAYS AND THE EFFECT OF PROCESS VARIABLES ON MECHANICAL PROPERTIES OF POLYESTER/CLAY NANOCOMPOSITES

2014 ◽  
pp. 117-122
Author(s):  
Nevil Johnson ◽  
Dr Deviprasad Varma P. R ◽  
Manoj George ◽  
Dr K.E George
Keyword(s):  
Mechanical Properties ◽  
In Situ Polymerization ◽  
Unsaturated Polyester ◽  
Clay Content ◽  
Clay Nanocomposites ◽  
Kaolinite Clay ◽  
Operating Variables ◽  
Vinyl Silane ◽  
Clay Aggregates ◽  
Clay Type

This paper addresses the effects of operating variables on mechanical properties of polyester/clay nanocomposites including tensile strength, percentage elongation etc. The variables were clay type, clay content, and prepolymer–clay mixing type. The experiments were carried out based on the design of experiments using statistical methods. The nanocomposites were synthesized via in situ polymerization of polyester and clay (dissolved using styrene monomer) with Methyl-ethyl ketone peroxide (MEKP) as catalyst in Cobalt base accelerator. Unmodified Kaolinite clay and Vinyl silane modified clay are the two types of clay examined. The parameters studied, clay type and mixing method are found to have significant effects on mechanical properties. Polyester nanocomposites showed larger improvements in mechanical properties compared to pristine polyester, especially when sonicator type of mixing is employed due to the favorable shear forces exerted by polymer matrix on clay aggregates during polymer–clay mixing. It is observed that the stress and elongation at break of the nanocomposite samples can be optimized with a particular percentage of clay loading. Characterizations of the nano composites were also made using techniques like SEM.

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