On-line polymerisation monitoring in scCO2: a reliable and inexpensive sampling method in high pressure applications

Influence of structure and solubility of chain transfer agents on the RAFT control of dispersion polymerisation in scCO2

“…With this CTA, the second regime starts at 6 hours and presents a 7.25-fold increase in the rate of polymerisation. 42 However, different from the reaction in presence of CPAB, the final molecular weight was in agreement with the theoretical value. Furthermore, different from CPAB, the kinetics study did not show a deviation of M n from M n,th trend line (Fig.…”

“…S8 † ). 42 In addition, investigation on the early stage of MMA polymerisation with CPDT, shows that turbidity and hence nucleation begins just 19 minutes into the reaction (Fig. S9 † ), and we also see a bimodal molecular weight distribution (Fig.…”

“… d Results extracted from Kortsen et al . 42 See Experimental section for reaction conditions used for toluene solution polymerisation and scCO 2 dispersion polymerisation. …”

“…In order to further investigate this point, we made use of a recently developed sampling system 42 to try to combine kinetic information with colloidal features of the system during the polymerisation. Previous sampling devices did not allow accurate conversion measurements due to loss of the volatile monomer.…”

“…1 ). 42 This trithiocarbonate CTA is well-suited for MMA polymerisation in homogeneous medium, e.g. toluene (E3.1, Table 1 ).…”