Synthesis, structure and properties of copolymers of syndiotactic polypropylene with 1-hexene and 1-octene

2021 ◽  
Author(s):  
Miriam Scoti ◽  
Rocco Di Girolamo ◽  
Fabio De Stefano ◽  
Angelo Giordano ◽  
Anna Malafronte ◽  
...  
Keyword(s):  
Elastic Properties ◽  
Crystallization Behavior ◽  
Structure And Properties ◽  
Syndiotactic Polypropylene ◽  
Elastomeric Materials

Incorporation of long branches, such as 1-hexene or 1-octene, in syndiotactic polypropylene gives novel elastomeric materials, whose crystallization behavior and elastic properties can be easily tailored through tuning of the branches concentration.

Modeling of the Structure and Properties of Poly(Urethane-Isocyanurate) Elastomeric Materials

1998 ◽  
Vol 282-283 ◽  
pp. 295-302 ◽  
Author(s):  
J. Budinski-Simendić ◽  
M. Ilavsky ◽  
M. Špírková ◽  
Jan Šomvarsky ◽  
K. Dušek
Keyword(s):  
Structure And Properties ◽  
Elastomeric Materials

New, Highly Structured Carbon Black of the OMCARB Series for Reducing the Hysteresis in Rubber. Part 1. Features of the Structure and Properties of Carbon Black

2016 ◽  
Vol 43 (12) ◽  
pp. 17-22
Author(s):  
G.V. Moiseevskaya ◽  
G.I. Razd'yakonova ◽  
A.A. Petin ◽  
E.A. Strizhak
Keyword(s):  
Carbon Black ◽  
Chemical Properties ◽  
Morphological Characteristics ◽  
Structural Data ◽  
Structure And Properties ◽  
Elastomeric Materials ◽  
Rubber Part ◽  
Average Size ◽  
Branched Structure ◽  
And Chemical Properties

The aim of this work was to study the properties of carbon black CH85 of the OMCARB series and to compare them with the properties of standard carbon blacks N339 and N234. The morphological characteristics, the size distribution of the globules and aggregates, the surface area, the proportion of micropore area, the degree of branching of aggregates, and also the mechanical and chemical properties were measured and calculated. The average size of the aggregates of CH85 is greater than that of N339 and N234, and the aggregates have a more open and branched structure. The iodine adsorption by CH85 is practically the same as that by N339 and lower than that by N234. The low-hysteresis index calculated on the basis of structural data is much better for CH85. This opens up the possibility of using this type of carbon black for the development of elastomeric materials with low hysteresis.

Elastic Properties and Polymorphic Behavior of Fibers of Syndiotactic Polypropylene at Different Temperatures

2002 ◽  
Vol 35 (24) ◽  
pp. 9083-9095 ◽  
Author(s):  
Claudio De Rosa ◽  
Maria Carla Gargiulo ◽  
Finizia Auriemma ◽  
Odda Ruiz de Ballesteros ◽  
Abbas Razavi
Keyword(s):  
Elastic Properties ◽  
Polymorphic Behavior ◽  
Syndiotactic Polypropylene ◽  
Different Temperatures

Multiscale Modeling Techniques Based on Molecular Structure and Elastic Properties

2013 ◽  
Vol 312 ◽  
pp. 438-441
Author(s):  
Jiu Li
Keyword(s):  
Molecular Structure ◽  
Force Field ◽  
Elastic Properties ◽  
Polymer Structure ◽  
Structure And Properties ◽  
Basic Principles ◽  
Multi Scale ◽  
Scale Modeling ◽  
Modeling Techniques ◽  
Nonlinear Continuum

Based on the principle of using atomistic force field, and the use of ultra-flexible multi-scale modeling techniques to predict the polycarbonate and polyimide polymer molecular structure and the elastic properties of the system. The model combines molecular modeling and nonlinear continuum mechanics basic principles, to simulate and predict the behavior of the material properties of the polymer molecular structure. For the polymer structure and properties, using a plurality of force field simulation to predict the contrast, and binding experiments measured polymer performance value, using static and dynamic molecular simulation technology for molecular mechanics energy minimization to solve.

Investigation of Structure and Properties of the Al–Y–Ni–Co–Cu Metallic Glasses

2002 ◽  
Vol 17 (5) ◽  
pp. 1014-1018 ◽  
Author(s):  
Dmitri V. Louzguine ◽  
Akihisa Inoue
Keyword(s):  
Electron Microscopy ◽  
Metallic Glasses ◽  
Crystallization Behavior ◽  
Supercooled Liquid ◽  
Partial Replacement ◽  
Structure And Properties ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Transmission Electron

The present paper reports the effect of partial replacement of Ni by Cu in the Al85Y8Ni5Co2 alloy. The studied alloys were produced by rapid solidification. Glass-formation, crystallization behavior, and stability of the supercooled liquid were studied by x-ray diffraction, transmission electron microscopy, and differential scanning calorimetry. Partial replacement of Ni by Cu in the Al85Y8Ni5Co2 metallic glass caused formation of the nanoscale α–Al particles and resulted in a decrease in the crystallization temperature and disappearance of the supercooled liquid.

On the crystallization behavior of cold-drawn syndiotactic polypropylene

1996 ◽  
Vol 274 (10) ◽  
pp. 1006-1011 ◽  
Author(s):  
J. Loos ◽  
A. H�ckert ◽  
J. Petermann
Keyword(s):  
Crystallization Behavior ◽  
Syndiotactic Polypropylene
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