Tian Nan, Zhang Guang-li, Li Li-sheng, FENG Xin-de. STUDIES ON THE MORPHOLOGY AND STRUCTURE OF SEGMENTED POLYETHER URETHANE[J]. Acta Polymerica Sinica, 1983,(3):161-166.
Tian Nan, Zhang Guang-li, Li Li-sheng, FENG Xin-de. STUDIES ON THE MORPHOLOGY AND STRUCTURE OF SEGMENTED POLYETHER URETHANE[J]. Acta Polymerica Sinica, 1983,(3):161-166.DOI:
The influenee of two different feeding ways of a two-step method of segmented polyether urethane (SPEU) solution polymerization on morphology of SPEU was inve-stigated in electron microscope.SPEU prepared by [PTMEG—MDT]-Extender reac-tion feeding way consists of two phases and the dispersion domains which are mainly made up of hard segments are small stick·shaped in morphology;electron diffraction pattern indicates that the domain is crystalline.SPEU prepared by [PTMEG—MDI]—Extender reaction feeding way also showed two-phase structure:The domains are-spherical in shape,and they are amorphous.