Synthesis and micellar behavior of poly(vinyl alcohol-b-styrene) copolymers containing PVA blocks with different syndiotacticity

Kinetic study of atom transfer radical homo- and copolymerization of styrene and methyl methacrylate initiated with trichloromethyl-terminated poly(vinyl acetate) macroinitiator

“…CCl 3 -terminated PVAc telomer has been used as a macroinitiator in the homopolymerization of various monomers such as St [29,32,36], MMA [30,31,34] and methyl acrylate (MA) [30,31] as well as in the copolymerization of MMA and MA [14,33,35] to synthesize PVAc-based block copolymers. In the present study, atom transfer radical homo-and copolymerization of St and MMA was performed in the presence of CCl 3 -terminated PVAc telomer as a macroinitiator at 90 C (Table 1).…”

“…On the other hand, conventional free-radical polymerization techniques producing mono-or di-functional polymers can also be suitably associated with some CLRP systems to give novel block copolymers. For example, PVAc-based block copolymers have been synthesized by consecutive radical telomerization of VAc with chloroform or carbon tetrachloride and ATRP of various monomers in the presence of trichloromethyl (CCl 3 )-terminated PVAc telomer [29][30][31][32][33][34][35][36]. It has been found that PVAc telomer can be used as an effective macroinitiator in the ATRP.…”

CMC and dynamic properties of poly(VA-b-St) copolymer micelles for drug delivery

“…Poly(VA-b-St) block copolymers containing PVA with different tacticity were prepared as described in our previous papers [20,21]. The molecular characteristics of block copolymer are shown in Table 1.…”

“…Therefore, poly(VA-b-St) copolymers are expected to show higher kinetic stability and slower drug release. Our previous paper reported that poly(VA-b-St) copolymers form micelles in an aqueous phase [20].…”

Synthesis of poly(vinyl pivalate) by atom transfer radical polymerization in supercritical carbon dioxide

“…Later, these copolymers were employed as stabilizers in the dispersion polymerization of N-vinyl pyrrolidone, which yielded polymers with high conversion and molecular weight [15,28]. In addition, Li et al [25,47] reported the synthesis of poly(VPi-b-St) by ATRP using VPi telomer as a macroinitiator, where the telomer was prepared by radical telomerization of VPi using carbon tetrachloride. The structure of PVPi-b-PVAc synthesized in scCO 2 was confirmed by 1 H NMR (Fig.…”