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. 2024 Jan 4;4(2):98–108. doi: 10.1021/acspolymersau.3c00021

Table 1. Molecular Parameters of LAL Triblock Copolymersa.

sample middle block
triblock
G (kPa) tensile fracture strain SAXS
  nHA nAAPA ntot λ nBnMA fBnMA (%)     q* (nm–1) d (nm)
TR1 251 0 251 0 1.26 30 10.4 1.28 2.52 1.22 ± 0.02 0.172 36.5
TR2 239 23 262 0.09 1.19 36 11.5 1.23 4.07 1.39 ± 0.05 0.171 36.7
TR3 180 60 240 0.25 1.22 32 10.8 1.26 10.55 1.57 ± 0.05 0.194 32.4
TV1 180 60 240 0.25 1.22 40 13.2 1.28 12.14 1.60 ± 0.17 0.218 28.8
TV2 188 62 250 0.25 1.22 102 27.3 1.35 67.25 0.95 ± 0.15 0.160 39.2
TV3 188 62 250 0.25 1.22 132 32.7 1.33 2730.00 0.82 ± 0.06 0.168 37.4
a

nHA, number of HA repeating units per middle block; nAAPA, number of AAPA repeating units per middle block; ntot, total number of repeating units per middle block; nBnMA, number of BnMA repeating units for each end linear PBnMA blocks; λ, fraction of AAPA repeating units per middle block; fBnMA, volume fraction of PBnMA end blocks; , polydispersity index (PDI); G, shear storage modulus G′ at 0.1 rad/s; q*, wavenumber of the primary scattering peak; d = 2π/q*, average center-to-center distance between two neighboring glassy domains; TR: triblock copolymers with different fractions of reversible bonds; TV: triblock copolymers with various volume fractions of end blocks. Error: standard deviation for n ≥ 3.