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

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15 Citations (Scopus)

Abstract

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
JournalMacromolecules
Volume48
Issue number12
DOIs
Publication statusPublished - 2015 Jun 23
Externally publishedYes

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ASJC Scopus subject areas

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

Cite this

Cao, P. F., Mangadlao, J. D., De Leon, A., Su, Z., & Advincula, R. C. (2015). Catenated Poly(∈-caprolactone) and Poly(l -lactide) via Ring-Expansion Strategy. Macromolecules, 48(12), 3825-3833. https://doi.org/10.1021/acs.macromol.5b00470