Copolymer , behavior

Amphiphilic Block Copolymer Behavior in Solution and Interfaces... 

An alternative hypothesis to account for deviations from simple copolymer behavior invokes reactions in which one or more of the propagation steps is significantly reversible under the reaction conditions. For example, if reaction (7-4) is not important, 22 and r2 will both be zero and Eq. (7-13) will reduce to... 

Many EPR and EPDM elastomers show a block copolymer behavior. When blended with PP, they form emulsion-like dispersions. For the ease of compounding a small amount of PE may also be added. Furthermore, if the elastomeric phase is hghtiy crosslinked the morphology is more stable. The PP/EPR blends can be processed by all methods used for PP. They are characterized by good processability, dimensional stability, low... 

Many different regular arrangements of two or more components within a molecule can be envisioned. In fact, the multiplicity is practically unlimited and a systematic study of all possible molecules is impossible. A goal for the material scientist is thus to understand copolymer behavior to such a degree that an optimized structure can be predicted before synthesis is attempted. 

In the tabulation, data are presented mainly for common homopolymers. When available, molecular weights are also given, but no major attempt has been made to present molecular weight dependencies. Additionally, a few illustrations of specific copolymers have been included as examples of copolymer behavior. 

While the knowledge of the composition drift provides important information on the copolymers compositional heterogeneity, it reveals nothing about their sequence distribution, important in determining different aspects of the copolymer behavior. 

An example of the way the incorporation of a charged monomer in a copolymer chain affects the copolymer behavior, in terms of polyelectrolyte behavior and chain stiffness, is presented in the following [47]. 

P(VC-VAc) PnBMA PiBMA P(VC-VAc) (10wt%VAc) miscible with PnBMA and PiBMA but not miscible with nBMA-iBMA copolymers behavior explained using mean field approach 863... 

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