Propriedades mecânicas de nanocompósitos de polipropileno e montmorilonita organofílica
Reads0
Chats0
TLDR
In this article, a mixture of polypropylene and commercial montmorillonite organophilic Cloisite 20A is used to construct a twoswrew extruder for melting.Abstract:
Nanocomposites of polypropylene and commercial montmorillonite organophilic Cloisite 20A containing 2.5%, 5%, 7.5% and 10% of clay with polypropylene-graft-maleic anhydride as coupling agent were prepared through the melt intercalation by twin-screw extruder. The materials were characterized by x-ray diffraction, tensile and impact properties according to ASTM D638 and D256 test methods, respectively. The x-ray diffraction results showed exfoliated or intercalated structures for different concentrations of the clay. The tensile modulus improved with the increase of the amount of the clay while the impact strength showed unsatisfactory results.read more
Citations
More filters
Journal ArticleDOI
Influence of Additives on Hybrids Membranes Morphology for Water Treatment
E.A. dos Santos Filho,A. Florindo Salviano,B. Aline Araújo,Keila Machado de Medeiros,Vanessa da Nóbrega Medeiros,Edcleide Maria Araújo,Hélio de Lucena Lira +6 more
TL;DR: In this paper, polyamide 6 membranes (PA6) and hybrids with 1, 3 and 5% of montmorillonite clay (MMT) were obtained, adding potassium chloride (KCl) and calcium chloride (CaCl2).
Biofilmes nanocompósitos obtidos de isolado proteico de corvina (Micropogonias furnieri) e Montmorilonita: Avaliação das propriedades físicas, mecânicas e de barreira Nanocomposite biofilms obtained from Whitemouth croaker (Micropogonias furnieri) protein isolate and Monmorilonite: Evaluation of the physical, mechanical and barrier properties
William Renzo Cortez-Vega,Daniela Cardozo Bagatini,Juliana Tais,Engenharia de Alimentos,Escola de Química +4 more
TL;DR: In this article, the authors evaluated the properties of nanocomposite biofilms based on Whitemouth croaker (Micropogonias furnieri) protein isolate with organophilic clays.
Journal ArticleDOI
Influência das condições de mistura e dos teores de Acetato de Vinila e de argila nas propriedades de nanocompósitos de EVA/montmorilonita organofílica
Daiane Dias de Queiroz,Patrícia Moraes Sinohara Souza,Júlia Eulálio de Souza Bertucci,Amanda F. M. Vieira,Ana Rita Morales,Claire Isabel Grígoli de Luca Sarantópoulos +5 more
TL;DR: In this paper, a factorial design was applied to assess the degree of clay exfoliation in a torque rheometer with rotors roller type, at 150°C for 10 minutes, monitoring the torque versus time, in order to investigate their influence on the characteristics of the nanocomposites.
References
More filters
Journal ArticleDOI
Polymer-layered silicate nanocomposites: preparation, properties and uses of a new class of materials
TL;DR: In this article, a review of polymer-layered silicate nanocomposites is presented, where the polymer chains are sandwiched in between silicate layers and exfoliated layers are more or less uniformly dispersed in the polymer matrix.
Journal ArticleDOI
Polymer-layered silicate nanocomposites: an overview
TL;DR: An overview of polymer-clay hybrid nanocomposites is provided with emphasis placed on the use of alkylammonium exchanged smectite clays as the reinforcement phase in selected polymer matrices as discussed by the authors.
Journal ArticleDOI
An assessment of high voltage electron microscopy (HVEM). An invited review
M.H. Loretto,R.E. Smallman +1 more
TL;DR: High voltage electron microscopy (HVEM) has been extensively applied in the field of materials science as discussed by the authors, covering the study of heavy metals, ceramics and minerals, large-scale structures, dynamic processes and radiation damage.
Journal ArticleDOI
PP/clay nanocomposites prepared by grafting-melt intercalation
Xiaohui Liu,Xiaohui Liu,Qiuju Wu +2 more
TL;DR: In this article, a polypropylene (PP)/clay nanocomposites (PPCN) were prepared via grafting-melt compounding by using a new kind of co-intercalation organophilic clay which had a larger interlayer spacing than the ordinarily organophilous clay only modified by alkyl ammonium.
Journal ArticleDOI
Rheology of polymer layered silicate nanocomposites
TL;DR: In this paper, the mesoscale structure and the strength of polymer-nanoparticle interactions have been investigated using viscoelastic measurements of layered silicate-based polymer nanocomposites.