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Table 1 Polymer composition variations based upon the amount of 3 added during synthesis, the ratio of 3 to 4, and the molecular weight based on 1H NMR relative peak integrations

From: Biorenewable triblock copolymers consisting of l-lactide and ε-caprolactone for removing organic pollutants from water: a lifecycle neutral solution

Polymer Mole ratio 3:4 Average % yielda Average E factora Average 1H NMR Mn (Da)a Standard deviationb % RSDb Polydispersity (PDI)
1a 0.056 77 35 1.1 × 104 4.0 × 101 0.40 1.03
1b 0.11 71 36 1.1 × 104 1.5 × 103 14 1.03
1c 0.17 83 28 1.2 × 104 1.1 × 103 9.3 1.04
1d 0.23 76 30 1.2 × 104 4.2 × 102 3.6 1.03
1e 0.28 79 27 1.3 × 104 4.0 × 101 0.30 1.03
1f 0.34 81 25 1.3 × 104 3.7 × 102 2.7 1.04
1g 0.45 77 24 1.8 × 104 1.6 × 103 9.2 1.04
1h 0.56 73 22 1.9 × 104 6.1 × 102 3.3 1.04
1i 0.68 79 20 2.0 × 104 8.5 × 102 4.2 1.05
1j 0.79 77 19 2.3 × 104 1.9 × 103 8.3 1.05
1k 0.90 76 18 2.4 × 104 8.6 × 102 3.6 1.04
1l 0.96 68 22 2.5 × 104 1.6 × 103 6.1 1.05
2 0.00 N.D. N.D. 9.7 × 103 1.3 × 103 13 1.05
  1. % RSD is the percent relative standard deviation
  2. aAveraged over duplicate or triplicate synthesis trials
  3. bWith respect to average 1H NMR Mn