Self-assembling of Random Crystalline-Amorphous Copolymers PEB

Self-assembling of Random Crystalline-Amorphous Copolymers (PEB-n) 

The aggregation features of the PEB- copolymers were examined as a function of Mw and polymer concentration by investigating fully protonated copolymers in d-decane over the temperature range between the single coil 

From the examination of the scattering patterns of PEB-11, the tendency toward a asymptote with the Flory exponent v = 0.6 observed at high Q appears to have only a very minor temperature dependence. Thus, though the polymers are aggregating, on a local scale the diffuse scattering from the monomer correlations within a swollen chain prevails, indicating very open rod structures with single chain structures on a local scale. The devi- 

If one plots ln QdU/d 2) vs.Q, then such a one-dimensional Guinier representation directly reveals the rod radius (Fig. 38) pronounced linear regimes allowing an evaluation of the lateral rod size and forward scattering are observed. The resulting values for the rod radii and the forward scattering (di7/dQ (Q = 0)) are listed in Table 5 for two volume fractions of PEB-11 in d-decane. 

38 Scattering patterns from 1% solution of PEB-11 in d-decane in a one-dimensional Guinier presentation 

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