Polymer Networks: Principles of Their Formation, Structure and Properties
Springer, 1998 - Science - 343 pages
Written by an international team of authors with a strong emphasis on the underlying chemistry, this book forms a timely, concise, and accessible evaluation of the fundamentals of polymer network formation, structure, and properties, and how these three aspects are interrelated.
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In the vitrification region properties vary continuously between two different states
. For example, if a material initially present as a gelled glass is heated, a
horizontal trajectory through the vitrification region will lead to a rubber.
The dashed trajectory shown in Figure 4.8 leads to vitrification at point 1 (i.e.
cooling to 1' and heating at a constant rate in the DMTA will give a maximum in
tan 6 located at Tg — T^^. Then, polymerization continues in the vitrification
When a sample is quenched at point 1 to get 1', and it is again heated to
determine Tg (mid-point), the resulting value, located inside the vitrification
region, will be lower than r,;^. This does not mean that vitrification was not
attained during the ...
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Nonlinear polymerization gelation and network formation
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