A saturation effect for H-PET processed with PMDA is observed at higher chain extender concentrations due to the comparatively low concentration of hydroxyl end groups of HPET, which results in a defined and reproducible comb-like structure.
Nonlinear parameter [f.sup.2.sub.max] (a) and [beta] (b) of the MSF model for HPET, L-PET, and 1-PET as a function of PMDA addition.
It has already been shown that after HPET treatment the cITP of shorter duration responds better in comparison to the long standing ones [1, 21].
 reported a recovery in platelet counts after HPET treatment at 6-12-month follow-up which is consistent with the current study.
TABLE 3: Evaluation of platelet counts in response to HPET in HpSA positive patients (N = 34).
Logarithmic plots of dynamic storage modulus, G'([omega]), and dynamic loss modulus, G"([omega]), at 270[degrees]C for HPET and HPET modified with HBP-G2 during frequency sweeps are shown in Fig.
A series of HPET and HBP/HPET reactive blends were produced with specific SSP durations to achieve a constant I.V.
shear rate of the selected SSP-treated HPET and HBP/HPET reactive blends, all of comparable intrinsic viscosity.
Figure 12 shows that the elongational viscosity of the extruded HPET is comparable to that of the HBP/HPET blends, although the elongational viscosity of the blends with the lowest amount of HBP is reduced in the high strain rate regime, with a melt strength diminished to approximately half that of HPET.
The linear-chain extension achieved during SSP considerably increases the elongational viscosity of HPET, as shown in Fig.
The elongational viscosity of the blends is essentially controlled by the high molecular masses of HPET chains, whereas the elongational thickening appears to be mostly controlled by the branched HPET chains, in agreement with previous studies on branched polymers [e.g., ref.