Novel, fully biobased semicrystalline polyamides

Lidia Jasinska, Maurizio Villani, Jing Wu, Daan Van Es, Enno Klop, Sanjay Rastogi, Cor E. Koning

Research output: Contribution to journalArticlepeer-review

101 Scopus citations

Abstract

Novel, semicrystalline polyamides and co(polyamides) were synthesized from biobased sebacic acid (SA), 2,5-diamino-2,5-dideoxy-1,4;3,6-dianhydroiditol (diaminoisoidide, DAII) as well as from 1,4-diaminobutane (DAB), also known as putrescine in nature. Low molecular weight polyamides were obtained by melt polycondensation of the salts based on these monomers or by interfacial polycondensation. In order to increase their molecular weights the polyamide prepolymers were submitted to a solid state polymerization (SSP) process. The chemical structure of the polymers was confirmed by 2D NMR correlation spectra (COSY), heteronuclear multiple-bond correlation spectra (HMBC) and by FT-IR spectroscopy. In the present work, FT-IR and X-ray techniques were used as a tool for the investigation of the crystal structure of the polymers after SSP. The X-ray diffractograms of the polyamides point to crystals containing both 4.10- and DAII.10-based repeat units. Because of the presence of diaminoisoidide residues the synthesized fully renewable products exhibit tunable polarities and melting points. Since most commercial polyamides have a much higher melting point than their end application requires, especially for fiber applications, this simple adaption can result in a significant reduction of energy consumption during processing. © 2011 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)3458-3466
Number of pages9
JournalMacromolecules
Volume44
Issue number9
DOIs
StatePublished - May 10 2011
Externally publishedYes

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