Table 2.
Levels and dependent variables for the control factors in the Taguchi orthogonal array (OA) design (L9).
| Expt. No. | Control Factors and Their Levels | Dependent Variables | ||||||
|---|---|---|---|---|---|---|---|---|
| 1-CPRLS | 5-CPELS | |||||||
| Temp. (°C) | ClCBAi */LS (mol·mol−1) | Time (h) | H2O/IPA (vol.%) | CD (meq·g−1) |
Mw (g·mol−1) |
CD (meq·g−1) |
Mw (g·mol−1) |
|
| 1 | 60 | 1.0 | 1.0 | 10 | 3.04 | 33,159 | 2.69 | 34,124 |
| 2 | 70 | 2.0 | 1.0 | 15 | 3.25 | 56,234 | 2.81 | 36,413 |
| 3 | 80 | 1.5 | 1.0 | 20 | 2.47 | 48,437 | 2.82 | 24,302 |
| 4 | 60 | 1.5 | 1.5 | 15 | 3.14 | 52,455 | 2.75 | 39,009 |
| 5 | 70 | 1.0 | 1.5 | 20 | 3.30 | 32,490 | 2.93 | 32,070 |
| 6 | 80 | 2.0 | 1.5 | 10 | 3.37 | 81,175 | 3.12 | 38,681 |
| 7 | 60 | 2.0 | 2.0 | 20 | 3.17 | 30,496 | 2.86 | 33,787 |
| 8 | 70 | 1.5 | 2.0 | 10 | 3.35 | 61,665 | 2.08 | 41,958 |
| 9 | 80 | 1.0 | 2.0 | 15 | 3.45 | 87,938 | 2.94 | 42,364 |
* ClCBAi = Chloro carboxylic acid including ClCBA1 (2-chlorobutanoic acid for 1-CPRLS production) and ClCBA2 (6-chlorohexanoic acid for 5-CPELS production). In all reactions, NaOH was 30 wt.%.