Polymer architecture via abstraction of a hydrogen, can create a mid-chain growth site. Branching can be quantified by the branching index. An effect related to branching is chemical crosslinking - the formation of covalent bonds between chains. Crosslinking tends to increase T and increase strength and toughness. Among other applications, this process is used to strengthen rubbers in a process known as vulcanization, which is based on crosslinking by sulfur. Car tires, for example, are highly crosslinked in order to reduce the leaking of air out of the tire and to toughen their durability. Eraser rubber, on the other hand, is not
Sulfur trioxide in situ from sulfuric acid or is used as a solution in the acid. Along with being a strong oxidizing agent, sulfur trioxide will cause serious burns on both inhalation and ingestion because it is highly corrosive and hygroscopic in nature. SO should be handled with extreme care as it reacts violently with water and produces highly corrosive sulfuric acid. It should also be kept away from organic material due to the strong dehydrating nature of sulfur trioxide and its ability to react violently with such materials. Sulfur trioxide Sulfur trioxide (alternative spelling sulphur trioxide) is the chemical compound with