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

Naurotul Husna,

Maya Ismayati, Wasrin Syafii

и другие.

Journal of Applied Polymer Science, Год журнала: 2024, Номер 142(11)

Опубликована: Дек. 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.

Язык: Английский

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

Gege Cheng,

Fajian Zeng,

Xiuyu Liu

и другие.

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 141458 - 141458

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

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

и другие.

Industrial Crops and Products, Год журнала: 2025, Номер 230, С. 121118 - 121118

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

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

Naurotul Husna,

Maya Ismayati, Wasrin Syafii

и другие.

Journal of Applied Polymer Science, Год журнала: 2024, Номер 142(11)

Опубликована: Дек. 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.

Язык: Английский

Процитировано

0