SOLUTIONS

Radius of Gyration Below 10 nm

Radius of Gyration below 10 nm

System & Columns
EcoSEC GPC System with RI detector
LenS3 Multi-Angle Light Scattering detector
1 × TSKgel GMHHR-H (7.8 mm ID × 30 cm)

LALS (red), RALS (blue) and HALS (green) signals with baselines and integration limits for PS 40K standard

LenS_PD_fig1A-rev.png

Measured values of radius of gyration, Rg,z, of PS standards
Sample Mw Rg,z Literature values*
PS 100K 100,400 12.0 13.2
PS 40K  40,800  7.6  8.1
PS 30K  30,100  6.6  6.8
PS 20K  18,600  5.5  5.3
PS 10K  10,700  4.6  3.9
* Literature values calculated using the correlation   Rg = 0.0245•MW0.546

System & Conditions
Polystyrene (PS) standards below 100K
THF at 1.0 mL/min; T = 35 °C (pumps, column and RI)
Concentration = 1 - 3 mg/mL; injection volume = 50 µL

Angular dissymetry plot for PS 30K

LenS_PD_fig1B-a.png
LenS_PD_fig1b-b.png