ISSN:
0173-2803
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Microphase separation of as-reacted polyester-polyurethane samples based on α-hydro-ω-hydroxypoly(oxyethyleneoxyadipoyl)/4,4′-methylenedi(phenyl isocyanate)/1,4-butanediol/2-ethyl-2-hydroxymethyl-1,3-propanediol (mole ratio 1:3,2:1,9:0,1) was studied using transmission electron microscopy. A new staining technique was applied which uses ruthenium tetroxide vapour for the treatment of the polymer. Ruthenium tetroxide reacts preferably with the hard-segment-rich microdomains of the polyester-polyurethane. Therefore, a well-contrasted pattern is formed by staining which reflects the microdomain structure of the polymer. The hard-segment-rich microdomains have irregular, mostly globular shape, and their sizes range from about 2 to 8 nm.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/marc.1988.030090901
Permalink
