Polymers from fatty acids: Poly(co-hydroxyl tetradecanoic acid) synthesis and physico-mechanical studies

Chen Liu, Fei Liu, Jiali Cai, U. Wenchun Xie, Timothy Edward Long, S. Richard Turner, Alan Lyons, Richard A. Gross

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This chapter describes the synthesis and physicomechanical properties of bioplastics prepared from methyl-hydroxytetradecanoic acid (Me-ω-OHC14), a new monomer available by a fermentation process using an engineered Candida tropicalis strain. Melt-condensation experiments were conducted using titanium tetraisopropoxide (Ti[OiPr]4) as a catalyst in a two stage polymerization (2h at 200 °C under N2,4h at 220 °C under 0.1 mmHg). Poly(ω-hydroxytetradecanoate), P(ω-OHC14), M W, determined by SEC-MALLS, increased from 53K to 110K as the Ti(OiPr)4 concentration increased from 50 to 300 ppm. By varying the polymerization conditions (catalyst concentration, reaction time, second-stage reaction temperature) a series of P(ω-OHC14) samples were prepared with Mw values from 53K to 140K. The synthesized polyesters with M w ranging from 53K to 140K were subjected to characterization by DSC, TGA, DMTA and tensile testing. Influences of P(ω-OHC14) molecular weight, melting point, and enthalpies of melting/crystallization on material tensile properties were explored. Cold-drawing tensile tests at room temperature for P(ω-OHC14) with MW 53K to 78K showed a brittle-to-ductile transition. In contrast, P(ω-OHC14) with Mw 53K undergoes brittle fracture. Increasing P(ω-OHC14) MW above 78K resulted in strain-hardening phenomenon and tough properties with elongation at break about 700% and true tensile strength about 50 MPa. Comparisons between HDPE and P(ω-OHC14) mechanical and thermal properties as a function of their respective molecular weights are discussed.

Original languageEnglish
Title of host publicationBiobased Monomers, Polymers, and Materials
PublisherAmerican Chemical Society
Pages131-150
Number of pages20
ISBN (Print)9780841227675
DOIs
Publication statusPublished - 2012 Jan 1
Externally publishedYes

Publication series

NameACS Symposium Series
Volume1105
ISSN (Print)0097-6156
ISSN (Electronic)1947-5918

Fingerprint

Myristic Acid
Fatty acids
Hydroxyl Radical
Polymers
Fatty Acids
Molecular weight
Polymerization
Catalysts
Acids
Candida
Tensile testing
Brittle fracture
High density polyethylenes
Tensile properties
Strain hardening
Fermentation
Melting point
Polyesters
Elongation
Condensation

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Liu, C., Liu, F., Cai, J., Xie, U. W., Long, T. E., Turner, S. R., ... Gross, R. A. (2012). Polymers from fatty acids: Poly(co-hydroxyl tetradecanoic acid) synthesis and physico-mechanical studies. In Biobased Monomers, Polymers, and Materials (pp. 131-150). (ACS Symposium Series; Vol. 1105). American Chemical Society. https://doi.org/10.1021/bk-2012-1105.ch009

Polymers from fatty acids : Poly(co-hydroxyl tetradecanoic acid) synthesis and physico-mechanical studies. / Liu, Chen; Liu, Fei; Cai, Jiali; Xie, U. Wenchun; Long, Timothy Edward; Turner, S. Richard; Lyons, Alan; Gross, Richard A.

Biobased Monomers, Polymers, and Materials. American Chemical Society, 2012. p. 131-150 (ACS Symposium Series; Vol. 1105).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liu, C, Liu, F, Cai, J, Xie, UW, Long, TE, Turner, SR, Lyons, A & Gross, RA 2012, Polymers from fatty acids: Poly(co-hydroxyl tetradecanoic acid) synthesis and physico-mechanical studies. in Biobased Monomers, Polymers, and Materials. ACS Symposium Series, vol. 1105, American Chemical Society, pp. 131-150. https://doi.org/10.1021/bk-2012-1105.ch009
Liu C, Liu F, Cai J, Xie UW, Long TE, Turner SR et al. Polymers from fatty acids: Poly(co-hydroxyl tetradecanoic acid) synthesis and physico-mechanical studies. In Biobased Monomers, Polymers, and Materials. American Chemical Society. 2012. p. 131-150. (ACS Symposium Series). https://doi.org/10.1021/bk-2012-1105.ch009
Liu, Chen ; Liu, Fei ; Cai, Jiali ; Xie, U. Wenchun ; Long, Timothy Edward ; Turner, S. Richard ; Lyons, Alan ; Gross, Richard A. / Polymers from fatty acids : Poly(co-hydroxyl tetradecanoic acid) synthesis and physico-mechanical studies. Biobased Monomers, Polymers, and Materials. American Chemical Society, 2012. pp. 131-150 (ACS Symposium Series).
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abstract = "This chapter describes the synthesis and physicomechanical properties of bioplastics prepared from methyl-hydroxytetradecanoic acid (Me-ω-OHC14), a new monomer available by a fermentation process using an engineered Candida tropicalis strain. Melt-condensation experiments were conducted using titanium tetraisopropoxide (Ti[OiPr]4) as a catalyst in a two stage polymerization (2h at 200 °C under N2,4h at 220 °C under 0.1 mmHg). Poly(ω-hydroxytetradecanoate), P(ω-OHC14), M W, determined by SEC-MALLS, increased from 53K to 110K as the Ti(OiPr)4 concentration increased from 50 to 300 ppm. By varying the polymerization conditions (catalyst concentration, reaction time, second-stage reaction temperature) a series of P(ω-OHC14) samples were prepared with Mw values from 53K to 140K. The synthesized polyesters with M w ranging from 53K to 140K were subjected to characterization by DSC, TGA, DMTA and tensile testing. Influences of P(ω-OHC14) molecular weight, melting point, and enthalpies of melting/crystallization on material tensile properties were explored. Cold-drawing tensile tests at room temperature for P(ω-OHC14) with MW 53K to 78K showed a brittle-to-ductile transition. In contrast, P(ω-OHC14) with Mw 53K undergoes brittle fracture. Increasing P(ω-OHC14) MW above 78K resulted in strain-hardening phenomenon and tough properties with elongation at break about 700{\%} and true tensile strength about 50 MPa. Comparisons between HDPE and P(ω-OHC14) mechanical and thermal properties as a function of their respective molecular weights are discussed.",
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