Living radical polymerization of methylstyrenes by a stable nitroxyl radical, and stability of the aminoxy chain end

Stereospecific reversible deactivation radical polymerization of biomass‐based acrylates for precise control of tacticity and molecular weight

“…That is, with respect to the stereocontrol of polymerization, the RTCP of MiPDO is identical to nonliving polymerization insofar as the ee value of charged monomer is not changed. Such a comparable tendency has been reported in NMP of 2‐methylstyrene, RAFT polymerization of MMA, and living cationic polymerization of iso ‐butyl vinyl ether, in which the stereoregularity of resulting polymers is little changed by living or nonliving polymerization. As shown in Table and Figure , Đ is all less than 1.3 and the M n is close to M n,theo .…”

“…In the case of MiPDO in Figure , lower R p in the isospecific polymerization will be ascribed to the stability of the dormant. It has been reported that the steric hindrance of monomers and capping agents significantly affects the stability of the dormant and large steric hindrance around the propagating chain end enhances the polymerization rate. Furthermore, the ceiling temperature ( T c ) has been known to be higher in an isospecific polymerization rather than an atactic polymerization because of a smaller steric hindrance of the isospecific propagation of acrylates .…”

Grafting of polystyrene branches to polyethylene and polypropylene

“…Yoshida and Fujii13 performed radical polymerization of methyl styrene by using BPO in the presence of 4‐methoxy‐2,2′, 6, 6′‐tetramethyl‐1‐piperidinyl‐1‐oxy (MTEMPO). The tetramethyl protons from MTEMO on the polymer exhibited their 1 H‐NMR peaks at 0.30, 0.45, 1.00, and 1.15 ppm.…”

Unsymmetrically Substituted Stilbene–Maleic‐Anhydride Copolymers: Improving Synthesis and Measuring Substituent Effects on Conversion

“…[Lit. 50–51 °C] [ 18 ] ; 1 H NMR (CDCl 3 , 400 MHz) δ ppm: 7.51 (dd, 2H), 7.33 (m, 4H), 7.25 (m, 2H), 7.08 (d, 3H, overlapping signals), 2.37 (s, 3H); 13 C NMR (CDCl 3 , 100 MHz) δ ppm: 138.2, 137.4, 137.2, 128.8, 128.64, 128.55, 128.44, 128.43, 127.5, 127.2, 126.4, 123.7, 21.4.…”

“…58−59 °C]. [ 18 ] ; 1 H NMR (CDCl 3 , 400 MHz) δ ppm: 7.61 (d, 1H), 7.53 (m, 3H), 7.37 (m, 2H), 7.26 (m, 2H), 7.14 (d, 1H, J app = 16.5 Hz), 6.98 (t, 1H), 6.91 (d, 1H), 3.89 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ ppm: 156.9, 138.0, 129.1, 128.7, 128.6, 127.4, 126.6, 126.5, 126.4, 123.5, 120.8, 111.0, 55.5.…”