Poly copolymers, synthesis

Kim KT, Vandermeulen GWM, Winnik MA, Manners I (2005) Organometallic-polypeptide block copolymers synthesis and properties of poly(ferrocenyldimethylsilane)-b-poly (gamma-benzyl-L-glutamate). Macromolecules 38 4958 961... 

While all previous examples employ enzymatic ROP, there are two reports on block copolymer synthesis employing enzymatic poly condensation. The first one was published by Sharma et al. and describes the synthesis and solid-state properties of polyesteramides with poly(dimethylsiloxane) (PDMS) blocks [21]. The polycondensation was carried out with various ratios of dimethyl adipate. 

Moyer ES (1989) Ph.D. thesis, Chemistry, Photo-crosslinkable polyimide and poly(im-ide siloxane) homo- and copolymers synthesis and characterization, Virginia Polytechnic Institute and State University, Blacksburg... 

Block copolymer synthesis using GTP synthesis of poly(methyl methacrylate-fa-n-butyl methacrylate) (Scheme 3)... 

Fig. 5 Schematic representation of the block copolymer synthesis using the example of poly(2-(2-(4-(4-(4-cyano-phenylazo)-phenoxy)-butyric acid)ethyl es ter)et h y I cnc)-block- pol y st y re n e.

PoIypropylene- r / -poly(methyl methacrylate) Graft Copolymers Synthesis and Compatibilization of Polypropylene/Polylactide... 

Chen C, Cal GQ et al (2011) Chitosan-poly(epsllon-caprolactone)-poly(ethylene glycol) graft copolymers synthesis, self-assembly, and drug release behavior. J Biomed Mater Res A 96A 116-124... 

HAL Kalacheva, S., Rangelov, S., and Tsvetanov, C., Poly(glycidol)-based analogues to pluronic block copolymers. Synthesis and aqueous solution properties, Macromolecules, 39, 6845, 2006. 

Dubrovina, L. V Ponomareva, M. A. Shirokova, L. V. Storozhuk, I. R Valetskii, R. M. The study of poly(arylatearylenesulfonoxide) block-copolymers synthesis mode influence on their some properties. High-Molecular Compounds. A, 1981, 23(5), 384-388. 

Potentially, there are greater numbers of monomers that are suitable for cationic polymerization than for anionic, but the cationic method is less successful in block copolymer synthesis because, in many systems, the existence of a living carbocationic species is doubtful. Consequently, the involvement of carbocations in block copolymer synthesis tends to be limited to mixed reactions, e.g., the couphng of poly(tetrahydro-furan) cations with polystyryl anions to give an (A - B) diblock (Equation 5.19). 

Roncali, J. [1992], Conjugated poly[thiophenes) Synthesis, functionalization, and appiications, Chem. Rev., 92, pp. 711-738. Gadgii, B., Damlin, R, Aaritaio, T, Kankare, ]., and Kvarnstrdm, C. (2013). Electrosynthesis and characterization of viologen cross linked thiophene copolymer, Electrochim. Acta, 97, pp. 378-385. Nalwa, H. S. (2001). Advanced Functional Molecules and Polymers Electronic and Photonic Properties, 3 (Gordon and Breach Science Publishers, Amsterdam, The Netherlands]. 

B. Li, G. Sauve, M. C. lovu, M. Jeffries-EL, R. Zhang, J. Cooper, S. Santhanam, L. Schultz, J. C. Revelli, A. G. Kusne, et al. Volatile Organic Compound Detection Using Nanostructured Copolymers. Nano Lett. 2006,6,1598-1602. Q. Zhang, A. Cirpan, T. P. Russell, T. Emrick, Donor-Acceptor Poly(Thiophene-B/ock-Perylene Diimide) Copolymers Synthesis and Solar Cell Fabrication. Macromolecules 2009,42,1079-1082. 

Slater S, Houmiel KL, Tran M, Mitsky TA, Taylor NB, Padgette SR, Gruys KJ (1998) Multiple beta-ketothiolases mediate poly(beta-hydroxyalkanoate) copolymer synthesis in Ralstonia eutropha. J Bacteriol 180 1979-1987... 

Hilberer, A., et al. 1997. Poly(phenylenevinylene)-type conjugated alternating copolymers Synthesis and optical properties in solution. Macromol Chem Phys 198 2211. 

In the case of AB diblock copolymers prepared by the RAFT technique, the order of monomer addition must be taken into account. A characteristic example of such a block copolymer synthesis is demonstrated in Scheme 19. Initially, a poly(N, N-dimethylacrylamide) (PDMA) macro-CTA was prepared, followed by the use of PDMA-CTA as an initiator to polymerize successfully the second monomer N,N-dimethyl vinyl benzy-lamide (DMVBA). The final diblock copolymer is not contaminated with homopolymer. It has been discovered that the reverse approach is impossible, probably due to the slow fragmentation of the intermediate radical or due to the slow initiation efficiency of the intermediate radical (styrenic macroradical). 

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