Table 1. Structural Parameters Obtained from Data Fitting to SAXS Patterns Recorded for 1.0% w/w PLMA16–PBzMA37 Diblock Copolymer Particles in n-Dodecane at Various Temperatures: Mean Worm Core Cross-Section (2Rsw), Total Worm Cross-Section [2(Rsw + Rg)], Worm Contour Length (Lw), Aspect Ratio [Lw/2(Rsw + Rg)], Worm Kuhn Length (bw), and Solvent Fraction in the Core of the Particle (xsol).
temp/°C | mean worm core cross-section (2Rsw)/nm | total worm cross-sectiona [2(Rsw + Rg)]/nm | worm contour length (Lw)/nm | aspect ratio [Lw/2(Rsw + Rg)] | worm Kuhn length (bw)/nm | solvent fraction in particle corec (xsol) |
---|---|---|---|---|---|---|
20 | 12.8 ± 1.7 | 15.4 ± 1.8 | >600b | >39.0 | 160 ± 20 | ∼0 |
90 | 12.0 ± 1.9 | 14.7 ± 2.0 | 350 ± 48 | 23.8 ± 6.5 | 143 ± 7 | 0.29 |
160 | 12.5 ± 2.8 | 15.1 ± 2.9 | 17.3 ± 0.5 | 1.15 ± 0.25 | 16.8 ± 1.7 | 0.48 |
The radius of gyration of the PLMA corona block (Rg) was found to be 1.3 nm in all cases.
The q range available for worm contour length analysis means that a reliable upper limit value cannot be calculated.
Uncertainties are smaller than the number of significant figures quoted.