Because the elastic thermoplastic material, the nature of SBCs depends heavily on temperature, at r

Styrenic block copolymers (SBCs) is one of the thermoplastic elastomeric materials commonly used. They are molecules that have a simple structure ABA, where A is polystyrene (hard) and B is the elastic. egg crate Clips are Elastic most common polydiene, as polybutadiene egg crate or polyisoprene. The name is used for convenience and are widely SBCs are SBS and SIS, S is styrene, B is butadiene, isoprene, and I was.
This material forming two separate phases, so different from the corresponding random copolymer. Two phase maintains egg crate the nature of each homopolymer and copolymer shows two glass transition temperatures (Tg) is not the same as random copolymer, they exhibit a Tg values in between. As a result of SBCs at room temperature, mixed rigid polystyrene, durable elastic phase while retaining elasticity, help stretch the material easily.
Because the elastic thermoplastic material, the nature of SBCs depends heavily on temperature, at room temperature, they have the same elasticity of vulcanized rubber, high temperature they can flow like plastic. This is explained as follows. Polystyrene phase, accounting for a smaller portion of the structure material, including separate spherical regions (clusters) are formed from polystyrene blocks. These clusters are attached to the ends of the elastic string, egg crate this way the multi-dimensional connections (polystyrene phase), egg crate the same network links in vulcanized elastomeric materials traditionally conceived. The difference is that the network link has a physical nature as opposed to the chemical nature of network links in vulcanized compounds, so they are much less stable. At ambient temperature, the block copolymer is almost like vulcanized rubber. When heated, the polystyrene cluster software, networks become weaker resulting material capable of flowing; and again when cooled, becomes hard over polystyrene clusters and the initial elastic properties of it is retained.
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