Rubber products
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Synthetic rubber is made by synthetic method. Different kinds of rubber can be synthesized by using different raw materials (monomers). From 1900 to 1910, chemist C.D. Harris determined that the structure of natural rubber was isoprene polymer, which opened up a way for synthetic rubber. In 1910, the Russian chemist SV Lebedev (1874-1934) polymerized 1,3-butadiene with sodium metal as initiator to form sodium butadiene rubber. After that, many new kinds of synthetic rubber appeared, such as cis-1,3-butadiene rubber, chloroprene rubber, styrene butadiene rubber and so on. The output of synthetic rubber is much higher than that of natural rubber, among which styrene butadiene rubber is the largest.
