ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary A new class of segmented poly(urethane-urea-amide) (PUUA) block copolymers contained poly(oxytetramethylene) (POTM) were prepared by direct condensation of diacid chloride with amine-terminated poly(urethane-urea) (ATPUU) oligomers. The ATPUUs were prepared from the reaction of NCO-terminated polyurethane prepolymer with different diamines. The PUUAs having reduced viscosities ranged from 0.87 to 1.82 dL/g. These polymers were soluble in various polar solvents and gave transparent, tough, and flexible films by casting from m-cresol The copolymers were studied by utilizing differential scanning calorimetry (DSC), thermogravimetry (TG), and tensile testing.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00297522
