Organic/inorganic support for immobilizing (n-BuCp)2ZrCl2/TiCl3 hybrid catalyst for use in the preparation of polymer blends

2010 ◽  
Vol 60 (4) ◽  
pp. 676-684 ◽  
Author(s):  
Wei Li ◽  
Binbo Jiang ◽  
Jingdai Wang ◽  
Yongrong Yang
Keyword(s):  
Polymer Blends ◽  
Hybrid Catalyst ◽  
Inorganic Support

Organic/Inorganic Support for Immobilizing Cp2ZrCl2/ TiCl4 Hybrid Catalyst to Prepare Bimodal Polyethylene

2013 ◽  
Vol 699 ◽  
pp. 46-50
Author(s):  
Wei Li
Keyword(s):  
Toxic Effect ◽  
Ethylene Polymerization ◽  
Barrier Property ◽  
Hybrid Catalyst ◽  
Acrylic Copolymer ◽  
Inorganic Support ◽  
Bimodal Polyethylene

Organic/inorganic support for immobilizing hybrid catalyst (Cp2ZrCl2/ TiCl4) was devised. Silica was the inorganic part using in the immobilization of Cp2ZrCl2. Subsequently, styrene and acrylic copolymer (PSA) was coated on the silica. TiCl4 was finally supported on the PSA. PSA layer played obvious barrier ability to triethylaluminium (TEA) in the support which was observed by ethylene polymerization. This outstanding barrier property dramatically restrained the toxic effect of TEA to Cp2ZrCl2. Thus, the property of Cp2ZrCl2 could be maintained using cocatalyst TEA. Bimodal polyethylene was achieved cocatalysted by TEA.

Integration of Core-Edge Spectroscopy Methods for the Study of Polymers

1996 ◽  
Vol 54 ◽  
pp. 154-155
Author(s):  
E. G. Rightor
Keyword(s):  
Excited State ◽  
Polymer Blends ◽  
Gas Phase ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Electronic States ◽  
Core Electron ◽  
Bulk Solids ◽  
Development Application

Core edge spectroscopy methods are versatile tools for investigating a wide variety of materials. They can be used to probe the electronic states of materials in bulk solids, on surfaces, or in the gas phase. This family of methods involves promoting an inner shell (core) electron to an excited state and recording either the primary excitation or secondary decay of the excited state. The techniques are complimentary and have different strengths and limitations for studying challenging aspects of materials. The need to identify components in polymers or polymer blends at high spatial resolution has driven development, application, and integration of results from several of these methods.

A quantitative image analysis method for the determination of cocontinuity in polymer blends

1993 ◽  
Vol 51 ◽  
pp. 894-895
Author(s):  
William A. Heeschen
Keyword(s):  
Image Analysis ◽  
Polymer Blends ◽  
Quantitative Measurement ◽  
Morphological Evolution ◽  
Phase Ratio ◽  
Irregular Shapes ◽  
Quantitative Image ◽  
Discrete Domains ◽  
A Domains

Two new morphological measurements based on digital image analysis, CoContinuity and CoContinuity Balance, have been developed and implemented for quantitative measurement of morphology in polymer blends. The morphology of polymer blends varies with phase ratio, composition and processing. A typical morphological evolution for increasing phase ratio of polymer A to polymer B starts with discrete domains of A in a matrix of B (A/B < 1), moves through a cocontinuous distribution of A and B (A/B ≈ 1) and finishes with discrete domains of B in a matrix of A (A/B > 1). For low phase ratios, A is often seen as solid convex particles embedded in the continuous B phase. As the ratio increases, A domains begin to evolve into irregular shapes, though still recognizable as separate domains. Further increase in the phase ratio leads to A domains which extend into and surround the B phase while the B phase simultaneously extends into and surrounds the A phase.

Short Communication: Synthesis of Polymer-Embedded Metal Clusters by Thermolysis of Mercaptides—Polymer Blends

Polymer News ◽  
2005 ◽  
Vol 30 (9) ◽  
pp. 296-300
Author(s):  
F. Esposito ◽  
V. Casuscelli ◽  
M. V. Volpe ◽  
G. Carotenuto ◽  
L. Nicolais
Keyword(s):  
Polymer Blends ◽  
Short Communication ◽  
Metal Clusters ◽  
Communication Synthesis

Equilibrium emulsification of polymer blends by diblock copolymers

1990 ◽  
Vol 51 (2) ◽  
pp. 185-200 ◽  
Author(s):  
Zhen-Gang Wang ◽  
S.A. Safran
Keyword(s):  
Polymer Blends ◽  
Diblock Copolymers

Screening of interactions in polymer blends

1989 ◽  
Vol 50 (3) ◽  
pp. 245-253 ◽  
Author(s):  
M.G. Brereton ◽  
T.A. Vilgis
Keyword(s):  
Polymer Blends

CRYSTALLIZATION STUDIES OF POLYMER BLENDS BY FOURIER TRANSFORM IR PHOTOACOUSTIC SPECTROSCOPY

1983 ◽  
Vol 44 (C6) ◽  
pp. C6-131-C6-136
Author(s):  
E. Balizer ◽  
H. Talaat
Keyword(s):  
Fourier Transform ◽  
Polymer Blends ◽  
Photoacoustic Spectroscopy ◽  
Fourier Transform Ir

Electret-thermal Analysis of Polymer Blends

2003 ◽  
Vol 18 (2) ◽  
pp. 151-155 ◽  
Author(s):  
L. S. Pinchuk ◽  
V. A. Goldade ◽  
A. G. Kravtsov ◽  
S. V. Zotov ◽  
B. Jurkowski ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Polymer Blends

Interfacial Tension of Immiscible Polymer Blends: Temperature and Molecular Weight Dependence.

1988 ◽  
Author(s):  
S. H. Anastasiadis ◽  
I. Gancarz ◽  
J. T. Koberstein
Keyword(s):  
Molecular Weight ◽  
Interfacial Tension ◽  
Polymer Blends ◽  
Immiscible Polymer Blends ◽  
Molecular Weight Dependence ◽  
Immiscible Polymer
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