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High Performance Polymers
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Caprolactam-Laurolactam (Nylon 6/12) Copolymers: Synthesis and Characterization

Gheorghe Rusu

'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania grusu{at}icmpp.ro

Elena Rusu

'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania

The paper present the synthesis of a series of nylons as constituent polymers of parts obtained by rotational molding via activated anionic copolymerization of caprolactam with laurolactam. The initial mold temperature (initial polymerization temperature) was kept constant at 160° for all experiments. The initial laurolactamn content influence was investigated in terms of nylon yield, viscosity, density, melting temperature, degree of crystallinity, water absorption, impact strength and flexural modulus. The characteristics of copolymers were compared with those of the polyamide 6. From X-ray diffraction patterns and FT JR spectra it was found that the obtained polyamides are predominantly in the {alpha}-form.

Key Words: {epsilon}-caprolactam • laurolactam • anionic copolymerization • polyamides 6/12 • rotational molding

High Performance Polymers, Vol. 16, No. 4, 569-584 (2004)
DOI: 10.1177/0954008304041720
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