Would we expect that the co-polymer produced by anionic polymerization of butadiene and styrene to be...

Would we expect that the co-polymer produced by anionic polymerization of butadiene and styrene to be easily cross-linked? Yes or No and please explain why

Expert Solution

Styrene–butadiene (SB) copolymers are the largest volume, and hence industrially most significant, copolymers currently in use. They can be easily cross linked. They are typically divided into three classes. Styrene–butadiene rubbers (SBRs) are mostly used for tire applications.

SBRs are manufactured both by emulsion process and by solution process, utilizing anionic polymerization. High impact polystyrene (HIPS), the largest by volume of the three, is a thermoplastic resin and is used in food packaging, consumer electronics, and appliances. HIPS is manufactured by grafting of the polybutadiene rubber in solution during the production of polystyrene. SB block copolymers are utilized in the manufacture of transparent, impact‐resistant polystyrene as well as impact modification in other areas. SB block copolymers are exclusively manufactured by anionic polymerization of styrene and butadiene.

queen_honey_blossom answered 11 months ago

Assume that the co-polymer is a 1:1 mixture of styrene and maleic anhyride and draw the...

Assume that the co-polymer is a 1:1 mixture of styrene and maleic anhyride and draw the structure of the repeating monomer unit. Calculate the percent yield based upon the amount of maleic anhydride used. Use the molecular weight of one repeating monomer unit for the weight of the product. - 2.5 mL of styrene used - 1.581 g of maleic anhydride used - actual yield for nylon= 0.805 g - molecular weight of one repeating monomer unit= 226.32 g/mol

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Answer about anionic ‘living’ polymerization: (a) What number-average molecular weight (Mn) polystyrene would be formed by...

Answer about anionic ‘living’ polymerization: (a) What number-average molecular weight (Mn) polystyrene would be formed by polymerization of 10 g styrene with 0.1 g of butyl lithium, under complete living polymer system? (b) Suggest three different ways to synthesize polystyrene-b-polybutadiene-b-polystyrene (SBS) tri-block copolymer with controlled block length.

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