Yttrium-catalyzed Heteroatom-assisted Terpolymerization of ortho-Alkoxystyrene, Isoprene and Butadiene with High Regio- and Stereoselectivity

2021 ◽  
Author(s):  
Yuanhao Zhong ◽  
Baoli Wang ◽  
Dongmei Cui
Keyword(s):  
Butadiene Rubber ◽  
Polymer Science ◽  
Coordination Polymerization ◽  
Functional Monomers

Synthesis of functional styrene-isoprene-butadiene rubber (SIBR) through coordination polymerization is a theoretical challenge of polymer science, since functional monomers are usually poisonous to the employed catalysts. Herein, we report the...

scholarly journals Syndio-and cis-1,4 dually selective copolymerization of polar fluorostyrene and butadiene using rare-earth metal catalysts

2020 ◽  
Vol 7 (20) ◽  
pp. 3961-3968
Author(s):  
Yuanhao Zhong ◽  
Chunji Wu ◽  
Dongmei Cui
Keyword(s):  
Rare Earth ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Metal Catalysts ◽  
Polymer Science ◽  
Coordination Polymerization ◽  
Functional Monomers ◽  
Butadiene Styrene

Synthesizing functional butadiene–styrene rubber through coordination polymerization is a theoretical challenge for polymer science, since functional monomers usually deactivate to the applied catalysts.

Reflections on the Past and Future of Polyether Elastomers and on Redox Emulsion Polymerization

1991 ◽  
Vol 64 (3) ◽  
pp. 56-64 ◽  
Author(s):  
E. J. Vandenberg
Keyword(s):  
Emulsion Polymerization ◽  
American Chemical Society ◽  
Chemical Society ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Polymer Science ◽  
The Past ◽  
Synthetic Rubber ◽  
Styrene Butadiene ◽  
To Receive

Abstract I am greatly honored to have been selected to receive the prestigious Charles Goodyear Medal of the Rubber Division of the American Chemical Society. My work in the rubber field falls into two general areas: (1) early discoveries on the redox emulsion polymerization of styrene-butadiene rubber (SBR) and (2) polyether elastomers. I am perhaps best known for my work on polyether elastomers since I discovered, patented, and helped develop several families of polyether elastomers which were commercialized and are still important speciality elastomers. Most of my talk will be in that area. However, my SBR studies included my first important polymer-science discovery and preceded those who independently discovered the same systems and who were able to develop them commercially to the considerable advantage of our largest volume synthetic rubber, SBR. After briefly reviewing these past areas, I will give you my reflections on what important future developments for the rubber field could arise in the polyether area.

Digital imaging and quantitative image analysis of polymer blends

1996 ◽  
Vol 54 ◽  
pp. 170-171
Author(s):  
Xiao Zhang
Keyword(s):  
Digital Imaging ◽  
Imaging Techniques ◽  
Imaging Systems ◽  
Polymer Science ◽  
Key Factors ◽  
Multiple Imaging ◽  
Quantitative Image ◽  
Digital Imaging Systems ◽  
Multi Phase ◽  
Network Technologies

Polymer microscopy involves multiple imaging techniques. Speed, simplicity, and productivity are key factors in running an industrial polymer microscopy lab. In polymer science, the morphology of a multi-phase blend is often the link between process and properties. The extent to which the researcher can quantify the morphology determines the strength of the link. To aid the polymer microscopist in these tasks, digital imaging systems are becoming more prevalent. Advances in computers, digital imaging hardware and software, and network technologies have made it possible to implement digital imaging systems in industrial microscopy labs.

Effects of White Rot Fungus Physisporinus sp., Isolated in Japan, on Styrene-butadiene Rubber

2020 ◽  
Vol 93 (9) ◽  
pp. 289-292
Author(s):  
Yumi SHIMIZU ◽  
Shuma SATHO ◽  
Taro NAKAJIMA ◽  
Hiroaki KOUZAI ◽  
Kiminori SHIMIZU
Keyword(s):  
White Rot ◽  
White Rot Fungus ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Styrene Butadiene

Factors Affecting Molecular Self-Assembly and Its Mechanism

2012 ◽  
Vol 9 (1) ◽  
pp. 43 ◽  
Author(s):  
Hueyling Tan
Keyword(s):  
Self Assembly ◽  
Building Blocks ◽  
Molecular Engineering ◽  
Molecular Structures ◽  
Polymer Science ◽  
New Approach ◽  
Factors Affecting ◽  
Dna Structures ◽  
Self Assembling ◽  
Wide Range

Molecular self-assembly is ubiquitous in nature and has emerged as a new approach to produce new materials in chemistry, engineering, nanotechnology, polymer science and materials. Molecular self-assembly has been attracting increasing interest from the scientific community in recent years due to its importance in understanding biology and a variety of diseases at the molecular level. In the last few years, considerable advances have been made in the use ofpeptides as building blocks to produce biological materials for wide range of applications, including fabricating novel supra-molecular structures and scaffolding for tissue repair. The study ofbiological self-assembly systems represents a significant advancement in molecular engineering and is a rapidly growing scientific and engineering field that crosses the boundaries ofexisting disciplines. Many self-assembling systems are rangefrom bi- andtri-block copolymers to DNA structures as well as simple and complex proteins andpeptides. The ultimate goal is to harness molecular self-assembly such that design andcontrol ofbottom-up processes is achieved thereby enabling exploitation of structures developed at the meso- and macro-scopic scale for the purposes oflife and non-life science applications. Such aspirations can be achievedthrough understanding thefundamental principles behind the selforganisation and self-synthesis processes exhibited by biological systems.

Progress in Pacific Polymer Science

1991 ◽  
Keyword(s):  
Polymer Science

EFFECT OF METALLIC FUEL NATURE ON COMBUSTION CHARACTERISTICS OF AMMONIUM PERCHLORATE / BINDER / METAL COMPOSITE SOLID PROPELLANTS

2020 ◽  
Author(s):  
V. A. Poryazov ◽  
◽  
O. G. Glotov ◽  
V. A. Arkhipov ◽  
G. S. Surodin ◽  
...  
Keyword(s):  
Ammonium Perchlorate ◽  
Combustion Process ◽  
Experimental Information ◽  
Combustion Characteristics ◽  
Transformer Oil ◽  
Metal Composite ◽  
Butadiene Rubber ◽  
Solid Propellants ◽  
Metallic Fuel ◽  
Composite Solid Propellants

The goal of this research is to obtain experimental information about combustion characteristics of the composite propellant containing various metallic fuels. The propellant formulations contained two fractions of ammonium perchlorate (64.6%), inert binder (19.7%) - butadiene rubber SKD plastized with transformer oil, and metal fuel (15.7% of aluminum ASD-4, ASD-6, Alex; boron; aluminum diboride; aluminum dodecaboride; some mixtures of above listed ingredients). Experimental information will be used further as a background to develop the physical and mathematical model of combustion process.

In-situ Modification of Graphene Oxide by Insoluble Sulfur and Application for Nitrile Butadiene Rubber

2020 ◽  
Vol 35 (2) ◽  
pp. 221-228
Author(s):  
S.-B. Chen ◽  
T.-X. Li ◽  
S.-H. Wan ◽  
X. Huang ◽  
S.-W. Cai ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Butadiene Rubber ◽  
Nitrile Butadiene Rubber ◽  
In Situ Modification
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