Branching (polymer chemistry) Branching (polymer chemistry) In polymer chemistry, branching occurs by the replacement of a substituent, e.g., a hydrogen atom, on a monomer subunit, by another covalently bonded chain of that polymer; or, in the case of a graft copolymer, by a chain of another type. Branched polymers have more compact and symmetrical molecular conformations, and exhibit intra-heterogeneous dynamical behavior with respect to the unbranched polymers. In crosslinking rubber by vulcanization, short sulfur branches link polyisoprene chains (or a synthetic variant) into a multiply branched thermosetting elastomer. Rubber can also be so completely vulcanized that it becomes a rigid solid, so hard
The Sulphur Institute The Sulphur Institute The Sulphur Institute, or TSI, is an international non-profit organization which acts as a global advocate for sulfur and sulfur producers. The Sulphur institute was founded in 1960, initially working with companies involved in the mining of sulfur using the Frasch process. With the increase of the Claus process for extracting sulfur from natural gas and oil, TSI's members now include multinational energy companies. The Sulphur Institute connects these sulfur producers with sulfur's largest consumer markets (fertilzers and construction materials), transporters, traders, and service providers. Today, The Sulphur Institute's member companies include a host of companies from