Staff View: Modification of Rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin

Modification of Rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin

The purpose of this study was to prepare low-viscosity lignin-based polyurethane (LPU) resins for the modification of ramie (Boehmeria nivea (L.) Gaudich) fiber via impregnation to improve the fiber’s thermal and mechanical properties. Low-viscosity LPU resins were prepared by dissolving lignin in 2...

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Main Authors:	Lubis, Muhammad Adly Rahandi, Handika, Sucia Okta, Rita Kartika Sari, Iswanto, Apri Heri, Antov, Petar, Kristak, Lubos, Lee, Seng Hua, Pizzi, Antonio
Format:	Article
Published:	Multidisciplinary Digital Publishing Institute 2022
Online Access:	http://psasir.upm.edu.my/id/eprint/102220/ https://www.mdpi.com/2073-4360/14/11/2165
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spelling	my.upm.eprints.1022202023-06-16T20:21:02Z http://psasir.upm.edu.my/id/eprint/102220/ Modification of Rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin Lubis, Muhammad Adly Rahandi Handika, Sucia Okta Rita Kartika Sari Iswanto, Apri Heri Antov, Petar Kristak, Lubos Lee, Seng Hua Pizzi, Antonio The purpose of this study was to prepare low-viscosity lignin-based polyurethane (LPU) resins for the modification of ramie (Boehmeria nivea (L.) Gaudich) fiber via impregnation to improve the fiber’s thermal and mechanical properties. Low-viscosity LPU resins were prepared by dissolving lignin in 20% NaOH and then adding polymeric 4,4-methane diphenyl diisocyanate (pMDI, 31% NCO) with a mole ratio of 0.3 NCO/OH. Ramie fiber was impregnated with LPU in a vacuum chamber equipped with a two-stage vacuum pump. Several techniques such as Fourier-transform infrared (FTIR) spectroscopy, differential scanning calorimetry, thermogravimetric analysis, pyrolysis-gas chromatography–mass spectroscopy, field emission-scanning electron microscopy coupled with energy dispersive X-ray (EDX), and a universal testing machine were used to characterize lignin, LPU, and ramie fiber. The LPU resins had low viscosity ranging from 77 to 317 mPa·s−1. According to FTIR and EDX analysis, urethane bonds were formed during the synthesis of LPU resins and after impregnation into ramie fibers. After impregnation, the reaction between the LPU’s urethane group and the hydroxy group of ramie fiber increased thermal stability by an average of 6% and mechanical properties by an average of 100% compared to the untreated ramie fiber. The highest thermal stability and tensile strength were obtained at ramie impregnated with LPU-ethyl acetate for 30 min, with a residual weight of 22% and tensile strength of 648.7 MPa. This study showed that impregnation with LPU resins can enhance the thermal and mechanical properties of fibers and increase their wider industrial utilization in value-added applications. Multidisciplinary Digital Publishing Institute 2022-05-26 Article PeerReviewed Lubis, Muhammad Adly Rahandi and Handika, Sucia Okta and Rita Kartika Sari and Iswanto, Apri Heri and Antov, Petar and Kristak, Lubos and Lee, Seng Hua and Pizzi, Antonio (2022) Modification of Rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin. Polymers, 14 (11). art. no. 2165. pp. 1-22. ISSN 2073-4360 https://www.mdpi.com/2073-4360/14/11/2165 10.3390/polym14112165
institution	Universiti Putra Malaysia
building	UPM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Putra Malaysia
content_source	UPM Institutional Repository
url_provider	http://psasir.upm.edu.my/
description	The purpose of this study was to prepare low-viscosity lignin-based polyurethane (LPU) resins for the modification of ramie (Boehmeria nivea (L.) Gaudich) fiber via impregnation to improve the fiber’s thermal and mechanical properties. Low-viscosity LPU resins were prepared by dissolving lignin in 20% NaOH and then adding polymeric 4,4-methane diphenyl diisocyanate (pMDI, 31% NCO) with a mole ratio of 0.3 NCO/OH. Ramie fiber was impregnated with LPU in a vacuum chamber equipped with a two-stage vacuum pump. Several techniques such as Fourier-transform infrared (FTIR) spectroscopy, differential scanning calorimetry, thermogravimetric analysis, pyrolysis-gas chromatography–mass spectroscopy, field emission-scanning electron microscopy coupled with energy dispersive X-ray (EDX), and a universal testing machine were used to characterize lignin, LPU, and ramie fiber. The LPU resins had low viscosity ranging from 77 to 317 mPa·s−1. According to FTIR and EDX analysis, urethane bonds were formed during the synthesis of LPU resins and after impregnation into ramie fibers. After impregnation, the reaction between the LPU’s urethane group and the hydroxy group of ramie fiber increased thermal stability by an average of 6% and mechanical properties by an average of 100% compared to the untreated ramie fiber. The highest thermal stability and tensile strength were obtained at ramie impregnated with LPU-ethyl acetate for 30 min, with a residual weight of 22% and tensile strength of 648.7 MPa. This study showed that impregnation with LPU resins can enhance the thermal and mechanical properties of fibers and increase their wider industrial utilization in value-added applications.
format	Article
author	Lubis, Muhammad Adly Rahandi Handika, Sucia Okta Rita Kartika Sari Iswanto, Apri Heri Antov, Petar Kristak, Lubos Lee, Seng Hua Pizzi, Antonio
spellingShingle	Lubis, Muhammad Adly Rahandi Handika, Sucia Okta Rita Kartika Sari Iswanto, Apri Heri Antov, Petar Kristak, Lubos Lee, Seng Hua Pizzi, Antonio Modification of Rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin
author_facet	Lubis, Muhammad Adly Rahandi Handika, Sucia Okta Rita Kartika Sari Iswanto, Apri Heri Antov, Petar Kristak, Lubos Lee, Seng Hua Pizzi, Antonio
author_sort	Lubis, Muhammad Adly Rahandi
title	Modification of Rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin
title_short	Modification of Rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin
title_full	Modification of Rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin
title_fullStr	Modification of Rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin
title_full_unstemmed	Modification of Rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin
title_sort	modification of rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin
publisher	Multidisciplinary Digital Publishing Institute
publishDate	2022
url	http://psasir.upm.edu.my/id/eprint/102220/ https://www.mdpi.com/2073-4360/14/11/2165
_version_	1769844437817491456
score	13.211869

Modification of Rrmie fiber via impregnation with low viscosity bio-polyurethane resins derived from lignin

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