Block Copolymers: Synthetic Strategies, Physical Properties, by Nikos Hadjichristidis

By Nikos Hadjichristidis

Polymers can be categorised as both homopolymers, including one unmarried repeating unit, or copolymers, together with or extra specific repeating devices. Block copolymers include lengthy contiguous blocks of 2 or extra repeating devices within the related polymer chain. protecting one of many most well liked issues in polymer chemistry, Block Copolymers offers a coherent evaluate of the bogus routes, actual homes, and functions of block copolymers. This pioneering textual content presents not just a suggestion for constructing man made techniques for growing block copolymers with outlined features, but in addition a key to the connection among the actual homes of block copolymers and the constitution and dynamics of fabrics. protecting gains of the chemistry and physics of block copolymers that aren't present in similar texts, Block Copolymers illustrates the structure-activity courting of block copolymers and gives feedback for the layout of particular purposes. Divided into 5 sections–Block Copolymers comprises chapters on:

  • Block Copolymers by way of Chemical amendment of Precursor Polymers
  • Nonlinear Block Copolymers
  • Adsorption of Block Copolymers at Solid-Liquid Interfaces
  • Theory of Block Copolymer Segregation
  • Phase Transformation Kinetics
  • Block Copolymer Morphology
  • Block Copolymer Dynamics

Polymer chemists, physicists, chemical engineers, and fabrics scientists, in addition to graduate scholars in polymer technology, will locate Block Copolymers to be a useful textual content.

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Additional resources for Block Copolymers: Synthetic Strategies, Physical Properties, and Applications

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21). The reaction is terminated with methanol (Kennedy 1991). It has been observed that, in the case of amethylstyrene as the second monomer, the reaction temperature must be increased TiCl 4, DtBP MeO OMe + PIB MeCl/MeCH −80°C 1. Et3N, −60 °C CH3OH PαMeS-PIB-PαMeS 2. 21 42 BLOCK COPOLYMERS BY CATIONIC POLYMERIZATION slightly (to À60 C) in order to accelerate the crossover reaction and to minimize the PIB homopolymer impurities in the final triblock (Tsunogae 1994). Addition of Et3N in the polymerization mixture prior to a-MeSt addition also proved beneficial to the properties of the final triblock.

Je´roˆme R. (1996a) Macromolecules 29, 6090. Yu J. , Je´roˆme R. (1997b) Polymer 38, 3091. Yu Y. , Teyssie´ P. (1996) J. Polym. Sci. Part A: Polym. Chem. 34, 2221. Zilliox J. , Roovers J. E. , Bywater S. (1975) Macromolecules 8, 573. Block Copolymers: Synthetic Strategies, Physical Properties, and Applications. Nikos Hadjichristidis, Stergios Pispas and George Floudas Copyright  2003 John Wiley & Sons, Inc. ISBN: 0-471-39436-X CHAPTER 2 BLOCK COPOLYMERS BY CATIONIC POLYMERIZATION Advances in cationic polymerization methodology, starting in the middle 80s with the discovery of the true living cationic polymerization of vinyl ethers by Higashimura et al.

Faust 2000, Hadjikyriacou 2000) can also be used in the synthesis of ABA block copolymers when crossover from B to A is not straightforward due to reactivity differences. PaMeS-PIB-PaMeS and PpMeS-PIBPpMeS triblock copolymers were synthesized in this way (Li 1995, Fodor 1995). 20). Other triblock copolymers having PIB as the central block have been synthesized by Kennedy et al. The reaction scheme involves the production of a difunctional PIB chain using the difunctional initiating system p-dicumyl methyl ether(DCE)/TiCl4.

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