Table 1.
Polymer series[a] |
Side chain | fHB [b] | DP range[c] |
Mnrange [g mol−1][d] |
Average Mn/103 [g mol−1] |
---|---|---|---|---|---|
C1-3.3 | methyl | 0.16–0.74 | 14–31 | 3000–3200 | 3.3 |
C1-2.0 | 0.13–0.70 | 8–20 | 1700–2100 | 2.0 | |
C1-1.6 | 0.12–0.64 | 7–11 | 1300–1900 | 1.6 | |
C2-5.0 | ethyl | 0.10–0.55 | 20–32 | 3600–6100 | 5.0 |
C2-2.9(1) | 0.11–0.70 | 11–22 | 2300–3500 | 2.9 | |
C2-2.9(2) | 0–0.68 | 11–16 | 2300–3600 | 2.9 | |
C2-1.8 | 0–0.50 | 7–9 | 1600–2200 | 1.8 | |
C4-8.7[e] | butyl | 0–0.57 | 32–46 | 7900–10100 | 8.7 |
C4-5.0[e] | 0–0.53 | 19–31 | 4500–6000 | 5.0 | |
C4-1.6[e] | 0–0.47 | 5–9 | 1300–1900 | 1.6 | |
C6-4.8 | hexyl | 0.09–0.51 | 20–24 | 4400–5600 | 4.8 |
C6-3.3 | 0–0.36 | 11–19 | 2700–4100 | 3.3 | |
C6-2.0 | 0–0.30 | 8–10 | 1900–2300 | 2.0 | |
Bz-3.5 | benzyl | 0.09–0.80 | 13–17 | 2700–4100 | 3.5 |
Bz-2.2 | 0.08–0.51 | 8–10 | 2000–2400 | 2.2 | |
Bz-1.8 | 0.08–0.40 | 6–9 | 1600–2000 | 1.8 |
The series of polymers having alkyl groups were denoted by Cn-molecular weight averaged over the series, in which n is the number of carbons in the alkyl side chains.
fHB=mole fraction of monomers with hydrophobic groups in a polymer chain.
DP=degree of polymerization (number of monomers in a polymer chain).
The number-average molecular weight of polymers (Mn) was calculated from fHB, DP, and the molecular weights of monomers and methyl 3-mercaptopropionate.
Data reported previously.[40]