Block copolymers and uses thereof

A styrenic block copolymer having one or more polymer blocks A and one or more polymer blocks B and having a formula selected from:

• A-B-A, A-B-B-A, (A-B-A)nX, (A- B)nX, or mixtures thereof, wherein
• n is from 2 to 30, X is residue of a coupling agent;
• the block copolymers containing at least two blocks A connected by at least one block B representing more than 50 wt. % of the styrenic block copolymer;
• each one or more A block independently is a polystyrene block having:
• a 1,1-diphenylethylene content from about 10 wt. % to about 63 wt. %, relative to the weight of the A block,
• a molecular weight from about 5 kg/mol to about 40 kg/mol, and
• a weight content relative to the weight of the styrenic block copolymer, of about 13 wt. % to about 25 wt. %;
• each one or more B block independently is a poly(1,3-diene-styrene) block derived from 1,3-diene units and styrene units, the poly(1,3-diene-styrene) block comprises an isoprene-rich block, a butadiene-rich block, or combinations of both blocks, wherein
• the polymerized 1,3-diene units having pendant 1,2- and/or 3,4-vinyl groups correspond to a wt.% content “V” as relative to the total weight of the polymerized 1,3- diene in the one or more B blocks,
• the styrene unit having wt.% content “S” as relative to total weight of the one or more B blocks,
• the isoprene-rich block if present comprises more than 90 wt. % of polymerized isoprene units relative to the weight of the polymerized 1,3-diene, with S having a value of 0 to about 25, and (S+V) having a value of about 25 to about 65, and
• the butadiene-rich block if present comprises more than 90 wt. % of polymerized butadiene units relative to the weight of the polymerized 1,3-diene, with S having a value of 10 to about 30, and (1.2*S+V) having a value of about 60 to about 100;
• wherein the styrenic block copolymer exhibits a DMA tangent delta maximum at a temperature between -40° C. and +10° C., at 10 rad/s angular frequency, as measured in accordance with ASTM D4065.