Polymers bearing a single succinic anhydride at the chain end were syn
thesized using anionic polymerization techniques. Specifically, the li
ving anions of poly(methyl methacrylate) (PMMA), polystyrene (PS), pol
yisoprene (PI), and poly(vinylpyridine) (PVP) were found to exclusivel
y undergo a 1,4-conjugate addition reaction with di-tert-butyl maleate
. Only a single maleate adds. The gel permeation chromatograms for the
synthesized polymers were found to have very narrow molecular weight
distributions (M-w/M-n < 1.15) after the end-capping reaction. Pyrolys
is (235 degrees C, 2-12 h) of the resulting substituted di-tert-butyl
succinate ester efficiently produced the related succinic anhydride fu
nctional polymers in the case of PMMA and PS. The functionality of the
se polymers (f greater than or equal to 0.81) was determined following
derivatization reactions with various amines. Nuclear magnetic resona
nce (NMR) spectroscopy and gel permeation chromatography (GPC) of the
resulting amides permits quantification of the extent of functionaliza
tion. Upon melt blending (200 degrees C) an anhydride terminal PMMA (2
9 kg/mol) with an amino terminal PS (18.5 kg/mol) all of the monofunct
ional homopolymers were converted to PS-PMMA diblock within 20 min (GP
C and transmission electron microscopy, TEM). A lamellar morphology (T
EM) was obtained after further annealing of this sample (72 h).