Preparation, Chemical, and Thermal Characterization of Nylon 4/6 Copolymers by Anionic Ring Opening Polymerization of 2-Pyrrolidone and epsilon-Caprolactam
- Title
- Preparation, Chemical, and Thermal Characterization of Nylon 4/6 Copolymers by Anionic Ring Opening Polymerization of 2-Pyrrolidone and epsilon-Caprolactam
- Other Titles
- 6 Copolymers by Anionic Ring Opening Polymerization of 2-Pyrrolidone and epsilon-Caprolactam
- Author
- 조창기
- Keywords
- 2-pyrrolidone; Ring opening polymerization; Nylon 4 copolymer; Thermal stability; Nylon 4/6
- Issue Date
- 2014-05
- Publisher
- KOREAN FIBER SOC
- Citation
- FIBERS AND POLYMERS, 15(5), p.899-907
- Abstract
- Nylon 4/6 copolymers based on 2-pyrrolidone (C4) and epsilon-caprolactarn (C6) were synthesized and characterized as part of ongoing efforts to develop thermally stable, melt-processable 2-pyrrolidone (C4) based Nylons. Copolymers of various compositions were synthesized at between 50 and 100 degrees C via the anionic ring opening polymerization of C4 and C6 using a potassium tert-butoxide catalyst and a benzoyl chloride initiator. The polymers were characterized by NMR spectroscopy, DSC, TGA, GPC, intrinsic viscosity measurements, and X-ray scattering (SAXS and WAXS). Their chemical compositions and sequence distributions were obtained by H-1- and C-13-NMR spectroscopies, respectively. X-ray scattering was used to investigate the lamellar morphologies and the crystal structures of solvent cast films of the copolymers. WAXS revealed the presence of alpha-phase crystals in the copolymers. TGA data coupled with molecular weight and sequence distribution information indicated that the polymers' thermal stability depended on both their chemical composition and their sequence distribution.
- URI
- http://link.springer.com/article/10.1007/s12221-014-0899-zhttp://hdl.handle.net/20.500.11754/54662
- ISSN
- 1229-9197; 1875-0052
- DOI
- 10.1007/s12221-014-0899-z
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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