Gelation of a-PS and Conformational Order

Let the mole fraction of the monomer units in each component be and Xb, the corresponding extinction coefficient of the band be and b, 

When the molecular conformation order follows Bernoulli statistics, W(ni) can be expressed by using flie probability z of a monomer unit existing in the ordered conformation as 

Q = 4nJ I(q) q dq, is proportional to the extent of gelation. If the time-dependent change and the degree of conformational order x 512) are compared (see Fig. 10), it can be found that both are increasing. 

The rate of gel formation and the conformational order depend strongly on the polymer concentration. This indicates that the conformational order proceeds with the aggregation of molecular segments. In order to elucidate its mechanism, the dynamic mechanical behavior of conformational order is analyzed. As a model, we will consider the process of 

the initial slope with respect to time t is 

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