Mechanically Strong and Fast‐Curing Kraft Lignin‐Based Polyurethane Foam DOI Open Access

Naurotul Husna,

Maya Ismayati, Wasrin Syafii

et al.

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: 142(11)

Published: Dec. 16, 2024

ABSTRACT The creation of biobased rigid polyurethane from nonfood resources such as lignin has garnered significant interest, especially concerning the biorefinery concept. However, few studies have investigated virgin a polyol source for foam and effects single factors, solvent, concentration, lignin:isocyanate ratio, on properties polyurethane. High‐density (~500 kg/m 3 ) was successfully formed by all solvents except sodium hydroxide, which confirmed via Fourier transform infrared (FTIR) spectroscopy pyrolysis‐gas chromatography–mass spectrometry (Py‐GCMS). highest to lowest modulus elasticity (MOE) rupture (MOR) values different were follows: tetrahydrofuran (THF) (402.25 13.24 N/mm 2 > dimethyl formamide (DMF) (46 1.69 sulfoxide (DMSO) (29 1.39 ). DMSO selected optimal solvent because considerable curing time (26.67 s) needed produce foam. A higher concentration resulted in better physical, mechanical, thermal some extent. Moreover, opposite occurred with increasing isocyanate ratio system. These findings can serve basis optimizing utilization bioresource manufacture more specific uses.

Language: Английский

Mussel-inspired adhesive and tough hydrogel for drug release based on lignin-containing cellulose nanofiber DOI

Gege Cheng,

Fajian Zeng,

Xiuyu Liu

et al.

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 141458 - 141458

Published: Feb. 1, 2025

Language: Английский

Citations

1
Green and sustainable fabrication of UV-resistance and antioxidant cotton via self-crosslinking bamboo ethanol lignin DOI Creative Commons

Xu Dong,

Longxue Gao,

Tianyuan Xiao

et al.

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 230, P. 121118 - 121118

Published: May 1, 2025

Language: Английский

Citations

0
Mechanically Strong and Fast‐Curing Kraft Lignin‐Based Polyurethane Foam DOI Open Access

Naurotul Husna,

Maya Ismayati, Wasrin Syafii

et al.

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: 142(11)

Published: Dec. 16, 2024

ABSTRACT The creation of biobased rigid polyurethane from nonfood resources such as lignin has garnered significant interest, especially concerning the biorefinery concept. However, few studies have investigated virgin a polyol source for foam and effects single factors, solvent, concentration, lignin:isocyanate ratio, on properties polyurethane. High‐density (~500 kg/m 3 ) was successfully formed by all solvents except sodium hydroxide, which confirmed via Fourier transform infrared (FTIR) spectroscopy pyrolysis‐gas chromatography–mass spectrometry (Py‐GCMS). highest to lowest modulus elasticity (MOE) rupture (MOR) values different were follows: tetrahydrofuran (THF) (402.25 13.24 N/mm 2 > dimethyl formamide (DMF) (46 1.69 sulfoxide (DMSO) (29 1.39 ). DMSO selected optimal solvent because considerable curing time (26.67 s) needed produce foam. A higher concentration resulted in better physical, mechanical, thermal some extent. Moreover, opposite occurred with increasing isocyanate ratio system. These findings can serve basis optimizing utilization bioresource manufacture more specific uses.

Language: Английский

Citations

0