Polylactide fibers with enhanced hydrolytic and thermal stability via complete stereo-complexation of poly(l-lactide) with high molecular weight of 600000 and lower-molecular-weight poly(d-lactide)

Gangwei Pan, Helan Xu, Bomou Ma, Jakpa Wizi, Yiqi Yang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

One-hundred percent stereo-complexation in poly(l-lactide) (PLLA)/poly(d-lactide) (PDLA) fibers with non-equivalent molecular weights could be achieved via thermal treatment. Stereo-complexed polylactide (sc-PLA) fibers exhibited excellent hydrolysis resistance and thermal resistance. Till now, preparation of sc-PLA fibers with satisfactory qualities required both PLLA and PDLA with equivalently high molecular weights. Moreover, the high-molecular-weight PDLAs are expensive, restricting industrial-scale production and applications of sc-PLA products. In this study, equal-weight mixtures of low-molecular-weight PDLA (L-PDLA) and high-molecular-weight PLLA (H-PLLA) were melt spun into sc-PLA fibers and then completely stereo-complexed via thermal treatment. The hydrolysis resistance of L3/D1 fibers [PLLA (Mv = 3.0 × 105)/PDLA (Mv = 1.0 × 105)] was similar to that of L3/D3 fibers [PLLA (Mv = 3.0 × 105)/PDLA (Mv = 3.2 × 105)], but much higher than that of L3 fibers [PLLA (Mv = 3.0 × 105)]. Melting temperature and softening temperature of L3/D1 fibers (223 and 126 °C) were also similar to those of L3/D3 fibers (224 and 131 °C), but higher than that of L3 fibers (172 and 72 °C). Utilizing H-PLLA and L-PDLA to prepare sc-PLA fibers with excellent performance is conducive to the wide industrial application of sc-PLA.

Original languageEnglish (US)
Pages (from-to)5490-5500
Number of pages11
JournalJournal of Materials Science
Volume53
Issue number7
DOIs
StatePublished - Apr 1 2018

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Complexation
Thermodynamic stability
Molecular weight
Fibers
Hydrolysis
poly(lactide)
dilactide
Heat treatment
Heat resistance
Industrial applications
Melting point

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "Polylactide fibers with enhanced hydrolytic and thermal stability via complete stereo-complexation of poly(l-lactide) with high molecular weight of 600000 and lower-molecular-weight poly(d-lactide)",
abstract = "One-hundred percent stereo-complexation in poly(l-lactide) (PLLA)/poly(d-lactide) (PDLA) fibers with non-equivalent molecular weights could be achieved via thermal treatment. Stereo-complexed polylactide (sc-PLA) fibers exhibited excellent hydrolysis resistance and thermal resistance. Till now, preparation of sc-PLA fibers with satisfactory qualities required both PLLA and PDLA with equivalently high molecular weights. Moreover, the high-molecular-weight PDLAs are expensive, restricting industrial-scale production and applications of sc-PLA products. In this study, equal-weight mixtures of low-molecular-weight PDLA (L-PDLA) and high-molecular-weight PLLA (H-PLLA) were melt spun into sc-PLA fibers and then completely stereo-complexed via thermal treatment. The hydrolysis resistance of L3/D1 fibers [PLLA (Mv = 3.0 × 105)/PDLA (Mv = 1.0 × 105)] was similar to that of L3/D3 fibers [PLLA (Mv = 3.0 × 105)/PDLA (Mv = 3.2 × 105)], but much higher than that of L3 fibers [PLLA (Mv = 3.0 × 105)]. Melting temperature and softening temperature of L3/D1 fibers (223 and 126 °C) were also similar to those of L3/D3 fibers (224 and 131 °C), but higher than that of L3 fibers (172 and 72 °C). Utilizing H-PLLA and L-PDLA to prepare sc-PLA fibers with excellent performance is conducive to the wide industrial application of sc-PLA.",
author = "Gangwei Pan and Helan Xu and Bomou Ma and Jakpa Wizi and Yiqi Yang",
year = "2018",
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language = "English (US)",
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TY - JOUR

T1 - Polylactide fibers with enhanced hydrolytic and thermal stability via complete stereo-complexation of poly(l-lactide) with high molecular weight of 600000 and lower-molecular-weight poly(d-lactide)

AU - Pan, Gangwei

AU - Xu, Helan

AU - Ma, Bomou

AU - Wizi, Jakpa

AU - Yang, Yiqi

PY - 2018/4/1

Y1 - 2018/4/1

N2 - One-hundred percent stereo-complexation in poly(l-lactide) (PLLA)/poly(d-lactide) (PDLA) fibers with non-equivalent molecular weights could be achieved via thermal treatment. Stereo-complexed polylactide (sc-PLA) fibers exhibited excellent hydrolysis resistance and thermal resistance. Till now, preparation of sc-PLA fibers with satisfactory qualities required both PLLA and PDLA with equivalently high molecular weights. Moreover, the high-molecular-weight PDLAs are expensive, restricting industrial-scale production and applications of sc-PLA products. In this study, equal-weight mixtures of low-molecular-weight PDLA (L-PDLA) and high-molecular-weight PLLA (H-PLLA) were melt spun into sc-PLA fibers and then completely stereo-complexed via thermal treatment. The hydrolysis resistance of L3/D1 fibers [PLLA (Mv = 3.0 × 105)/PDLA (Mv = 1.0 × 105)] was similar to that of L3/D3 fibers [PLLA (Mv = 3.0 × 105)/PDLA (Mv = 3.2 × 105)], but much higher than that of L3 fibers [PLLA (Mv = 3.0 × 105)]. Melting temperature and softening temperature of L3/D1 fibers (223 and 126 °C) were also similar to those of L3/D3 fibers (224 and 131 °C), but higher than that of L3 fibers (172 and 72 °C). Utilizing H-PLLA and L-PDLA to prepare sc-PLA fibers with excellent performance is conducive to the wide industrial application of sc-PLA.

AB - One-hundred percent stereo-complexation in poly(l-lactide) (PLLA)/poly(d-lactide) (PDLA) fibers with non-equivalent molecular weights could be achieved via thermal treatment. Stereo-complexed polylactide (sc-PLA) fibers exhibited excellent hydrolysis resistance and thermal resistance. Till now, preparation of sc-PLA fibers with satisfactory qualities required both PLLA and PDLA with equivalently high molecular weights. Moreover, the high-molecular-weight PDLAs are expensive, restricting industrial-scale production and applications of sc-PLA products. In this study, equal-weight mixtures of low-molecular-weight PDLA (L-PDLA) and high-molecular-weight PLLA (H-PLLA) were melt spun into sc-PLA fibers and then completely stereo-complexed via thermal treatment. The hydrolysis resistance of L3/D1 fibers [PLLA (Mv = 3.0 × 105)/PDLA (Mv = 1.0 × 105)] was similar to that of L3/D3 fibers [PLLA (Mv = 3.0 × 105)/PDLA (Mv = 3.2 × 105)], but much higher than that of L3 fibers [PLLA (Mv = 3.0 × 105)]. Melting temperature and softening temperature of L3/D1 fibers (223 and 126 °C) were also similar to those of L3/D3 fibers (224 and 131 °C), but higher than that of L3 fibers (172 and 72 °C). Utilizing H-PLLA and L-PDLA to prepare sc-PLA fibers with excellent performance is conducive to the wide industrial application of sc-PLA.

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U2 - 10.1007/s10853-017-1944-2

DO - 10.1007/s10853-017-1944-2

M3 - Article

VL - 53

SP - 5490

EP - 5500

JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

IS - 7

ER -