ISSN:
1435-1536
Keywords:
Poly(acrylamide-co-acrylates)
;
microemulsion polymerization
;
viscosity
;
13C NMR determination
;
potentiometry
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Two series of poly(acrylamide-co-acrylates) with compositions rangingfrom 10 to 55 mol % acrylate units were prepared by radical polymerization in inverse microemulsions. The compositional analyses of the samples were performed using elemental analysis, potentiometry and13C NMR. The comparison between the three methods indicates that13C NMR is the most reliable one, avoiding errors which often arise from associated water in hydrophilic polymers. The copolymer viscosity exhibits a maximum behavior around 40 mol % acrylate content, a lower value than that already observed for co-polymers prepared in homogeneous solution. The production of copolymers presenting high intrinsic viscosities (∼ 3700 cm3g−) is achieved using an inverse microemulsion as the polymerization medium operating at lower temperature.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01469528
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