Synthesis and characterization of polysiloxane–polyamide block and graft copolymers

N. Mougin, P. Rempp, Y. Gnanou*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


The synthesis of copolymers constituted of a central polydimethylsiloxane (PDMS) block flanked by two polyamide (PA) sequences is described. α, ω‐diacyllactam PDMS, when used as macroinitiator of lactam polymerization, gives rise to the expected triblock copolymer. Likewise, PDMS‐g‐PA graft copolymers are obtained from acyllactam containing polysiloxanes. NaAlH2(OCH2CH2OMe)2 turns out to be the best suited activating agent for the polymerization of ϵ‐caprolactam, in the experimental conditions required for the synthesis of polysiloxane–polyamide copolymers. The nucleophilic species formed by reaction of NaAlH2(OCH2CH2OMe)2 with ϵ‐caprolactam—2‐[bis(methoxyethoxy) aluminumoxy]‐1‐azacycloheptane sodium—is indeed nucleophilic enough to bring about the growth of PA chains and mild enough to stay inert towards PDMS. © 1993 John Wiley & Sons, Inc.

Original languageEnglish (US)
Pages (from-to)1253-1260
Number of pages8
JournalJournal of Polymer Science Part A: Polymer Chemistry
Issue number5
StatePublished - Apr 1993
Externally publishedYes


  • anionic polymerization of lactams
  • block copolymers
  • graft copolymers
  • polyamide copolymers
  • polysiloxane

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry


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