Nylon 4,I: an amorphous polyamide

R.J. Gaymans, A.G.J. van der Ham

Research output: Contribution to journalArticleAcademic

15 Citations (Scopus)
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The melt polymerization of nylon 4, I was studied, starting with nylon-salt and nylon prepolymers (ηinh=0.25). With nylon-salt only low molecular polymers were obtained, while with prepolymers the inherent viscosity could be raised to 0.77 (3h, 270°, vac.). The cyclization of tetra methylene diamine to pyrrolidine seem to be the major disturbing factor. The polymer is glassy and could easily be melt pressed. The torsion modulus of the material at 20°C was high (1.8 109 Pa) and remained high to near its Tg (138°C).
Original languageEnglish
Pages (from-to)1755-1758
Issue number12
Publication statusPublished - 1984


  • Amorphous nylon
  • Nylon 4,I
  • Tetra methylene diamine
  • Isophthalic acid
  • Properties
  • Polyamide synthesis


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