Olaru R.N.,Science Oltchim S.A |
Vuluga D.M.,Romanian Academy of Sciences |
Georgescu F.,Science Oltchim Research Center |
Marinescu D.,Science Oltchim Research Center |
Dimonie M.,Polytechnic University of Bucharest
UPB Scientific Bulletin, Series B: Chemistry and Materials Science | Year: 2010
The paper presents a comparative investigation on the microstructure of different partially hydrolysed polyvinyl alcohols used in PVC-S technology. Average acetate-containing sequence length and their distribution in partially hydrolyzed polyvinyl alcohols as well as their "blockiness" have been investigated via 1H-NMR of polyvinyl alcohols and UV spectra of polyvinyl alcohol-iodine complexes. For alkaline partially hydrolysed polyvinyl alcohols a linear correlation of blockiness (UV) with blockiness index (NMR) was found.