A numerical prediction of peak area in loss factor for polymers

We tried to correlate the polymer constitutes with the peak areas under tan δ–temperature curves, which are abbreviated as TA (loss tangent area) hereafter. TAs for homopolymers were obtained as the summation of ratio of contributions for functional groups in addition to the constant. TAs for semicrystalline polymers decreased with increase of the degree of crystallinity. Therefore, TAs for semicrystalline polymers were estimated from the ratio of the contribution of functional groups and crystallinity. TAs for copolymers were obtained by adopting the idea of mole ratio. Thus, the predicted values were fairly good in agreement with the measured ones for almost all kinds of linear polymers adapted in this study. © 1994 John Wiley & Sons, Inc.