Results 51 to 60 of about 902,813 (269)

Advancing Single‐Walled Carbon Nanotubes toward Next‐Generation Electronic Materials: The Critical Roles of Purity and Processability

Small Methods, EarlyView.
Single‐walled carbon nanotubes (SWNTs) are promising for a wide range of applications. In particular, their exceptional electrical conductivity positions them as potential alternatives to traditional metal conductors. This review identifies the key mechanisms governing their conductivity within composites and proposes practical pathways for translating
Xiao Yu, Alex Adronov
wiley   +1 more source

Hybrid materials based on polyethylene and MCM-41 microparticles functionalized with silanes: catalytic aspects of in situ polymerization, crystalline features and mechanical properties [PDF]

, 2016
New nanocomposites based on polyethylene have been prepared by in situ polymerization of ethylene in presence of mesoporous MCM-41. The polymerization reactions were performed using a zirconocene catalyst either under homogenous conditions or supported
A. Bento, Alexander, Alonso-Moreno, Arranz-Andrés, Arranz-Andrés, Arranz-Andrés, Beck, Bento, Boyd, Bunn, Campos, Campos, Cerrada, Cerrada, Cerrada, Cerrada, Cerrada, Cerrada, Cerrada, Cerrada, Chen, Chen, Chenite, Darras, Diez-Pascual, dos Santos, E. Pérez, Finch, Fonseca, Fox, Gedde, Ha, Heijboer, Hiltner, J.P. Lourenço, Jafari, Jentys, Jezequel, Kageyama, Kageyama, Kubacka, Kubacka, Lin, Lourenco, Lu, López-Majada, M.L. Cerrada, M.R. Ribeiro, Marcilla, McCrum, Millot, Oliver, Palza, Palza, Popli, Popli, Prieto, Quinn, Schatzki, Shin, Shirayam, Sindorf, Sinfrônio, V. Lorenzo, Vincent, Ward, Wunderlich, Wunderlich, Ye, Zapata, Zhao   +70 more
core   +1 more source

Olefin Polymerizations Oriented by Rational Designs of Group‐13 Compounds

The Chemical Record, EarlyView.
In coordination olefin polymerization chemistry, boron and aluminum compounds play important roles in both catalyst components and monomers. This personal account introduces our recent progress on the development of catalyst systems featured by the design of group‐13 counteranions, as well as the application of boronic acid‐crosslinked polyolefins to ...
Ryo Tanaka, Yu Zou
wiley   +1 more source

The Influence of t-Butyl and Cyclododecyl Substitution on Ethylene/1-Hexene Copolymerization Using Ansa-Fluorenylamidodimethyltitanium Derivatives

Molecules, 2011
In the present study, copolymerization of ethylene and 1-hexene was conducted with a series of ansa-fluorenylamidodimethyltitanium complexes, including [t-BuNSiMe2Flu]TiMe2 (complex 1), [cyclododecylNSiMe2Flu]TiMe2 (complex 2) and [t-BuNSiMe2(2,7-t ...
Bunjerd Jongsomjit, Zhengguo Cai, Takeshi Shiono, Piyasan Praserthdam, Yuuichi Sogo, Patcharaporn Kaivalchatchawal   +5 more
doaj   +1 more source

The synergistic effect on the thermomechanical and electrical properties of carbonaceous hybrid polymer nanocomposites

Polymer Testing, 2021
In this work, nanocomposites, based on linear low‐density polyethylene (mLLDPE), produced by metallocene catalyst, were prepared and experimentally investigated by means of thermomechanical-electrical properties and Raman spectroscopy.
Ilias Charitos, Giorgos Georgousis, Panagiotis A. Klonos, Apostolos Kyritsis, Dionysios Mouzakis, Yiannis Raptis, Athanassios Kontos, Evagelia Kontou   +7 more
doaj   +1 more source

Stereospecific Olefin Polymerization with Chiral Metallocene Catalysts [PDF]

Angewandte Chemie International Edition in English, 1995
AbstractCurrent studies on novel, metallocenebased catalysts for the polymerization of α‐olefins have far‐reaching implications for the development of new materials as well as for the understanding of basic reaction mechanisms responsible for the growth of a polymer chain at a catalyst center and the control of its stereoregularity.
Brintzinger, Hans-Herbert, Fischer, David, Mülhaupt, Rolf, Rieger, Bernhard, Waymouth, Robert M.   +4 more
openaire   +2 more sources

Epoxidised Natural Rubber (ENR)/Wollastonite Composites for Tyre Inner Liners: A Practical Replacement for Butyl Rubber in Industrial Applications

Polymer Engineering &Science, Volume 66, Issue 2, Page 1153-1169, February 2026.
Replacing butyl rubber with ENR+Wollastonite in tyre inner‐liners. ABSTRACT This study aimed to develop epoxidised natural rubber (ENR)‐based rubber compound formulations as an alternative to butyl rubber for tyre inner liners. The effects of different vulcanization systems, designed to achieve similar curing behavior in NR‐based carcass compounds and ...
Tuba Ünügül Yavuz, Abdussalam Essa, Ronak Janani, Bağdagül Karaağaç, Christopher Sammon   +4 more
wiley   +1 more source

Synthesis, reactivity, and catalytic activity of triangular ZrM2 (M = Rh, Ir) early-late heterobimetallic complexes [PDF]

, 2016
Reactions of the zirconium−sulfide metallocene anion [Cptt2ZrS2]2- (Cptt = η5-1,3-di-tert-butylcyclopentadienyl) with [{M(μ-Cl)(diolefin)}2 gave the d0−d8 complexes [Cptt2Zr(μ3-S)2{M(diolefin)}2] (M = Rh, diolefin = 2,5-norbornadiene (nbd) (1), 1,5 ...
Ciriano, Miguel A., Dobrinovich, Isabel T., Hernandez-Gruel, Marc A. F., Lahoz, Fernando J., Oro, Luis A., Pérez-Torrente, Jesús J., Rivas, Angel B.   +6 more
core   +1 more source

Polyethylene Melt Rupture and Slip in Simple Shear: A Visual and Mechanistic Study

Journal of Applied Polymer Science, Volume 143, Issue 3, January 15, 2026.
Slip velocity transient curve (left) with images of the specimen at different times during a simple shear experiment. On the right, schematics illustrate the sample and its side view before and after simple shear. ABSTRACT Melt rupture of a bimodal molecular weight distribution polyethylene is studied under simple shear via flow visualization ...
Mohammadali Sattari, Y. W. Inn, Paula M. Wood‐Adams   +2 more
wiley   +1 more source

Polypropylene obtained through zeolite supported catalysts

Polímeros, 2004
Propylene polymerizations were carried out with f2C(Flu)(Cp)ZrCl2 and SiMe2(Ind)2ZrCl2 catalysts supported on silica, zeolite sodic mordenite (NaM) and acid mordenite (HM).
Queli C. Bastos, Maria de Fátima V. Marques   +1 more
doaj   +1 more source