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The back-bone is an alternating copolymer of methyl vinyl ether and maleic anhydride.
Choi, 2,5-Bis(2-octyldodecyl)pyrrolo[3,4-c]pyrrole-1,4-( 2H,5H)-dione-Based Donor-Acceptor Alternating Copolymer Bearing 5,5'-Di(thiophen-2-yl)-2,2'-biselenophene Exhibiting 1.5 cm2*V-1*s-1 Hole Mobility in Thin-Film Transistors, J.
The results showed that these alternating copolymer brushes could form spherical aggregates in water.
When i [not equal to] j then [T.sub.g, ij] has a physical meaning of the glass transition temperature of an alternating copolymer. Molar proportion of individual dyads, [n.sub.ij], as well as the probability of their occurrence, [P.sub.ij], which are required to describe the glass transition temperature of copolymers can be calculated by applying a statistical model on copolymerization reaction.
To our knowledge, maleic anhydride and styrene can form the alternating copolymers under lower temperature and there are many literatures about synthesizing alternating copolymer with maleic anhydride and styrene with reversible addition-fragmentation chain transfer (RAFT) process and the probable CTC propagation mechanism (Scheme 1) for RAFT copolymerization of styrene and maleic anhydride clarified with ESR spectroscopy (Electron Spin Resonance) by Du et al.
Poly (styrene-maleic anhydride) alternating copolymer (SMA) was synthesized through solution polymerization, as described elsewhere (10).
The first two commercial products in this category are an ethylene-CO perfectly alternating copolymer and an ethylene-propylene-CO terpolymer called Carilon from Shell.
In recent years, owing to the development of zinc glutarate as a catalyst (5), high yield production of the alternating copolymer from carbon dioxide and propylene oxide can be achieved (6).

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