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Novel Poly(butylene succinate)‐Based Ionomers with Sulfonated Succinate Units: Synthesis, Morphology, and the Unique Nucleation Effect on Crystallization
Author(s) -
Ishida Kazuki,
Han SangIl,
Inoue Yoshio,
Im SeungSoon
Publication year - 2005
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200400474
Subject(s) - crystallization , ionomer , nucleation , ionic bonding , lamellar structure , materials science , polymer chemistry , chemical engineering , optical microscope , morphology (biology) , polybutylene succinate , chemistry , copolymer , scanning electron microscope , polymer , composite material , organic chemistry , ion , biology , engineering , genetics
Summary: Poly(butylene succinate) (PBS) and PBS‐based ionomers (PBSi's) with 0.3 and 1.2 mol‐% of sodium sulfonated succinate unit were synthesized. The existence of ionic aggregates in the ionomer matrices was indicated by melt viscosity and glass transition data. It seems that the ionic aggregates have two opposing roles in crystallization: one is the induction of nucleation and the other is the interference with lamellar growth. Because of these two contrary effects, the crystallization behavior of the ionomers exhibited measurably different cooling rate‐dependencies than that of the parent PBS. The rate varied distinctly with ionic content.Spherulitic morphologies of PBS and PBSi's measured with polarizing optical microscopy.