What is polybutadiene made of?
Polybutadiene is a synthetic rubber formed from the polymerization of the monomer 1,3-butadiene. It is the second largest volume synthetic rubber produced, next to styrene-butadiene rubber (SBR), with about a quarter global consumption of synthetic rubber.
How is polybutadiene rubber made?
Polybutadiene [butadiene rubber BR] is a synthetic rubber. Polybutadiene rubber is a polymer formed from the polymerization of the monomer 1,3-butadiene. Polybutadiene has a high resistance to wear and is used especially in the manufacture of tires, which consumes about 70% of the production.
Is polybutadiene crystalline or amorphous?
With the aid of anionic polymerization catalysts, 1,2-polybutadiene of high molecular weight has been synthesized. It is a crystalline material with a melting point above 150°C.
What is polybutadiene rubber?
Polybutadiene rubber is a polymer formed from the polymerization of the monomer 1,3-butadiene. Polybutadiene has a high resistance to wear and is used especially in the manufacture of tires, which consumes about 70% of the production.
How to mix polybutadiene rubber with styrene butadiene rubber (SBR)?
Then, after proper mastication of natural rubber, the polybutadiene rubber may be added to the two roll mixing mill. A similar practice may be adopted, for example, if polybutadiene is to be mixed with Styrene Butadiene Rubber (SBR). *Polybutadiene rubber may be added with Styrene as an impact modifier. High dosages may affect clarity of Styrene.
How does polybutadiene polymerize?
Polybutadiene forms by linking many 1,3-butadiene monomers to make a much longer polymer chain molecule. In terms of the connectivity of the polymer chain, butadiene can polymerize in three different ways, called cis, trans and vinyl. The cis and trans forms arise by connecting the butadiene molecules end-to-end, so-called 1,4-polymerisation.
What are the properties of polybutadiene?
Polybutadiene has excellent abrasion resistance (good tread wear), low hysteresis loss, high elasticity, and low rolling resistance due to its low glass transition temperature (T g), typically <−90 °C.