Catenated Poly(∈-caprolactone) and Poly(l -lactide) via Ring-Expansion Strategy

Peng Fei Cao, Joey Dacula Mangadlao, Al De Leon, Zhe Su, Rigoberto C. Advincula*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


Catenated poly(∈-caprolatone) (PCL) and poly(l-lactide) (PLA) were synthesized by a ring-expansion strategy based on a catenated tin initiator. Catenated PCLs with different degrees of polymerization (DPn) were obtained by modifying the feed ratios of monomer to initiator, and subsequent decomplexation rendered the copper-free catenated PCL. Both the Cu(I)-templated catenated PCL and Cu(I)-free catenated PCL were characterized by UV-vis, 1H NMR, FT-IR, and GPC analyses. The comparative GPC analyses of catenated polymers and their linear analogues were also performed, which revealed a reduced hydrodynamic diameter for the catenated polymers. The crystallinity of the catenated PCL compared to that of linear PCL was also studied by DSC and WAXS, and the Cu(I)-free catenated PCL exhibited a lower degree of crystallinity but larger crystallite size.

Original languageEnglish
Pages (from-to)3825-3833
Number of pages9
Issue number12
Publication statusPublished - 2015 Jun 23
Externally publishedYes

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry


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