The results show that under microwave irradiation, the intrinsic viscosity and the conversion of the polycondensate are raised.
结果表明,微波辐射能提高缩聚物的特性粘数和转化率。
The changes of intrinsic viscosity and end carboxyl group content with temperature and time were studied for poly(trimethylene terephthalate)(PTT), PET and CDP.
Intrinsic viscosity is a measure of a solute's contribution to the viscosity of a solution. It should not be confused with inherent viscosity, which is the ratio of the natural logarithm of the relative viscosity to the mass concentration of the polymer.