Styrene Copolymers
II. Styrene-Propylene Copolymer
1964 Volume 21 Issue 229 Pages 319-322
Details
1964 Volume 21 Issue 229 Pages 319-322
In order to confirm whether the sample (S-15) produced by a copolymerization reaction between styrene and propylene with Natta catalyst is a copolymer or not, solubility test and IR measurement were performed.
From the solubility test, it was found that most parts of the S-15 showed a different behaviour from that of a mixture of polypropylene and atactic polystyrene.
Furthermore, it was also found from IR measurement that two absorption bands at 1068cm-1 and 543cm-1 shifted to higher wave number side, except for the fraction extracted with ether. This shift did not occur in the case of blended polymers. Since these two bands are due to an intramolecular interaction between deformation vibration owing to a phenol group and skeletal vibration, the shift is considered to be due to a short sequence length of styrene in the copolymer.
From the results mentioned above, the S-15 was confirmed to be a copolymer.
