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Citation: Xue Mingqiang, Mao Lisheng, Shen Qi, Ma Jiale. Catalytic Ring-Opening Polymerization of ε-Caprolactone by Lanthanocene Amides[J]. Chinese Journal of Applied Chemistry, ;1999, 16(2): 106-108. shu

Catalytic Ring-Opening Polymerization of ε-Caprolactone by Lanthanocene Amides

1.
School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006

Received Date: 13 July 1998
Available Online: 14 December 1998
Fund Project: 国家自然科学基金(29672026) (29672026)

The catalytic activities of lanthanocene amides in ring-opening polymerization of ε-caprolactone have been investigated. Both the central metals and the ligands in amides showed effects on the catalytic activity. For the central metal, the activity increased with increase of ionic radii of the metal elements; for the amido groups, NC₅H₁₀ showed greater effect than N(i-Pr)₂; for substituted cyclopentadienyl ligands, effect of t-BuC₅H₄ was greater than that of MeC₅H₄. The mechanism of the ring-opening polymerization has been briefly discussed.
- ε-caprolactone,
- ring-opening polymerization,
- lanthanocene amide
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