Publication detail

Study of the Thermomechanical Properties of Photocured Resins Based on Curable Monomers from PLA and PHB for SLA 3D Printing

JAŠEK, V. MELČOVÁ, V. FIGALLA, S. FUČÍK, J. MENČÍK, P. PŘIKRYL, R.

Original Title

Type

journal article in Web of Science

Language

English

Original Abstract

Biobased curable structures were synthesized from polymers poly(lactic acid) (PLA) and poly(3-hydroxybutyrate) (PHB). The curability of synthesized products and their thermomechanical properties were studied using numerous methods: FT-IR, DSC, DMA, or TGA. The reactivity of all methacrylated esters of lactic and 3-hydroxybutanoic acid was studied via DSC, and the results confirmed that all structures could be cured. The highest activation energy (E-a) was calculated for methacrylated methyl lactate, reaching 134.3 kJmol(-1). It was also found that all calculated activation energies had very similar values. Infrared spectroscopy was used for the study of the degrees of cure. Curable alkyl lactates exhibited significantly higher degrees of cure (approximately 95% or more) than curable 3-hydroxybutarytes (around 70%). DMA analysis confirmed that methacrylated lactates showed higher glass transition temperatures (67.1 and 49.4 degrees C) and storage modulus values at 40 degrees C (1840 and 1110 MPa) compared to methacrylated 3-hydroxybutyrates (T-g of 44.4 degrees C and lower, and storage modules E ' around 600 MPa). The heat-resistant index calculated for all products proved the same trend: curable lactates exhibited higher heat resistivity (T-S of 148.0 and 146.3) than curable 3-hydroxybutyrates (T-S of 129.9 and 125.1). Synthesized and studied precursors can serve their particular purposes in fields of curable systems, and the application potential was performed via SLA 3D printing.

Keywords

depolymerization; up-cycling; curablemonomers; lactates; 3-hydroxybutyrates; thermal properties; mechanical properties

Authors

JAŠEK, V.; MELČOVÁ, V.; FIGALLA, S.; FUČÍK, J.; MENČÍK, P.; PŘIKRYL, R.

Released

3. 11. 2023

Publisher

AMER CHEMICAL SOC

Location

WASHINGTON

ISBN

2637-6105

Periodical

ACS APPLIED POLYMER MATERIALS

Year of study

Number

State

United States of America

Pages from

9909

Pages to

9917

Pages count

URL

https://pubs.acs.org/doi/10.1021/acsapm.3c01730

Full text in the Digital Library

http://hdl.handle.net/11012/245112

BibTex

@article{BUT186824,
  author="Vojtěch {Jašek} and Veronika {Melčová} and Silvestr {Figalla} and Jan {Fučík} and Přemysl {Menčík} and Radek {Přikryl}",
  title="Study of the Thermomechanical Properties of Photocured Resins Based on Curable Monomers from PLA and PHB for SLA 3D Printing",
  journal="ACS APPLIED POLYMER MATERIALS",
  year="2023",
  volume="5",
  number="12",
  pages="9909--9917",
  doi="10.1021/acsapm.3c01730",
  issn="2637-6105",
  url="https://pubs.acs.org/doi/10.1021/acsapm.3c01730"
}