Abstract
AbstractThe complex formation between poly(acrylic acid) (PAA) or poly(methacrylic acid) (PMA) with poly(ether‐ester)s such as poly[oxymaloyloxypoly(oxyethylene)]s (PMEGs) and poly[oxytartaroyloxypoly(oxyethylene)]s (PTEGs) as well as with their derivatives with the synthetic plant‐growth regulator 1‐naphthylacetic acid (NNA) was studied. Complex formation with PAA occurs below a critical polyether chain length for polymer‐polymer complexation. This peculiarity is discussed in view of the stabilizing effect of hydrophobization resulting from intramolecular hydrogen bonding. The hydrophobic 1‐naphthylacetyl groups of PMEG and PTEG esters are found to stabilize the polycomplexes even more. Derivatives with NAA as well as their complexes with PAA and PMA exhibit auxin activity.
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