Results 81 to 90 of about 20,406 (263)

Performance enhancement of phenolic resin by glycol-modified lignin

Performance enhancement of phenolic resin by glycol-modified lignin
AbstractWithout using fossil resources such as petroleum and coal, which are likely to be depleted and have a large load on the environment, we studied the improvement of the performance of phenolic resin using lignin‐based natural material, which is a non‐fossil resource that is less likely to cause environmental problems.
Hajime Kimura, Morio Yonekawa, Tomohiro Shimokawaji, Yasunori Ohashi, Eri Takata, Tatsuhiko Yamada   +5 more
openaire   +2 more sources

Life cycle inventory of polyethylene glycol-modified lignin and greenhouse gas emission reduction by replacing existing resins

Journal of Wood Science
This study investigated the greenhouse gas (GHG) emissions of polyethylene glycol-modified lignin (PEG-modified lignin) from the raw material procurement stage to the production stage based on the production process of PEG-modified lignin in a commercial-
Yuki Fuchigami, Yasunori Ohashi, Eri Takata, Tatsuhiko Yamada   +3 more
doaj   +1 more source

Chemical thermostabilization for the preparation of carbon fibers from softwood lignin [PDF]

BioResources, 2012
A thermally fusible softwood lignin was directly isolated by a solvolysis of cedar wood chips with a mixture of polyethylene glycol 400 (PEG 400) and sulfuric acid.
Jian Lin, Satoshi Kubo, Tatsuhiko Yamada, Keiichi Koda, Yasumitsu Uraki   +4 more
doaj  

A Simple Regeneration Process Using a CO2‐Switchable‐Polarity Solvent for Cellulose Hydrogels

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The effect of transformation of the anion chemical structure on cellulose solubility by flowing CO2 gas into aqueous pyrrolidinium hydroxide solutions was investigated. The changes in anion structure allowed for the modulation of cellulose solubility in aqueous pyrrolidinium hydroxide solutions, thus establishing a simple and safe cellulose ...
Arata Matsui, Deandra Ayu Putri, Morgan L. Thomas, Yuko Takeoka, Masahiro Rikukawa, Masahiro Yoshizawa‐Fujita   +5 more
wiley   +1 more source

Optimizing the Synthesis of Lignin Derivatives from Acacia mangium to Improve the Enzymatic Hydrolysis of Kraft Pulp Sorghum Bagasse

International Journal of Renewable Energy Development, 2020
The present study is aimed at optimizing the synthesis of Amphipilic lignin derivatives (A-LD) from the isolated lignin of A.mangium black liquor (BL), using the one and two step acid isolation method, and commercial lignin (LS) was used as comparison ...
Widya Fatriasari, Fajar Nur Hamzah, Bagas Ikhasan Pratomo, Triyani Fajriutami, Riksfardini Annisa Ermawar, Faizatul Falah, Raden Permana Budi Laksana, Muhammad Ghozali, Apri Heri Iswanto, Euis Hermiati, Ina Winarni   +10 more
doaj   +1 more source

High pressure pre-treatments promote higher rate and degree of enzymatic hydrolysis of cellulose [PDF]

, 2011
The effect of high pressure (HP) pre-treatments on the subsequent enzymatic hydrolysis of cellulose from bleached kraft Eucalyptus globulus pulp by cellulase from Tricoderma viride was evaluated. Pressure pre-treatments of 300 and 400 MPa during 5–45 min,
Alvira, Ana R. F. C. Ferreira, Andreia B. Figueiredo, Balat, Balat, Berlin, Chen, Chen, Correia, Dmitry V. Evtuguin, Figueiredo, Foust, Gregg, Ha, Hamelinck, Jorge A. Saraiva, Klemm, Kumar, Lin, Mansfield, Ramirez, Sainz, Salvador, Saraiva, Sassner, Sun, Zhang   +26 more
core   +2 more sources

Xylose Acetals ‐ a New Class of Sustainable Solvents and Their Application in Enzymatic Polycondensation

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Novel organic solvents with an unmodified carbohydrate core were synthesised both from D‐xylose and directly from biomass and were successfully used as reaction media for lipase biocatalysts to synthesise aliphatic and aromatic polyesters. Abstract The use of organic solvents in academic research and industry applications is facing increasing ...
Anastasia O. Komarova, Cicely M. Warne, Hugo Pétremand, Laura König‐Mattern, Johannes Stöckelmaier, Chris Oostenbrink, Georg M. Guebitz, Jeremy Luterbacher, Alessandro Pellis   +8 more
wiley   +1 more source

Hydrophobic, UV resistant and dielectric polyurethane-nanolignin composites with good reprocessability

Materials & Design, 2020
Lignin nanoparticles (LNP) were obtained by an acidolysis process from corn pristine lignin. X-ray photoelectron spectroscopy (XPS) and radical scavenging activity (RSA) of the free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) confirmed a significant ...
Guochuang Qi, Weijun Yang, Debora Puglia, Haigang Wang, Pengwu Xu, Weifu Dong, Ting Zheng, Piming Ma   +7 more
doaj   +1 more source

Functional Group Analysis of Reaction Products from Thermolysis of Lignin in Ethylene Glycol and Diethylene Glycol.

Journal of The Japan Petroleum Institute, 1994
エチレングリコールおよびジエチレングリコール中におけるリグニンの熱分解反応について研究した。反応温度573Kと623Kにおいて3時間反応を行った。ジエチレングリコール中, 反応温度573Kでの反応以外では, 生成物は2液相に分離した。下相はグリコールが主成分で, その他に水溶性の生成物が含まれており, 上相は黒色のオイル状の液体であった。元素分析値, 1H-NMRおよび13C-NMR測定により水素および炭素の分布を定量し, 官能基濃度解析法により生成物中に含まれていると推定される13種類の官能基の濃度を決定した。解析に際して2種類の解析法について検討した: 方法1は解析データとして元素分析値と1H-NMRデータを用いる方法であり, 方法2では元素分析値, 1H-NMRデータのほかに13C ...
Chiaki YOKOYAMA, Kazuhiko NISHI, Shinji TAKAHASHI   +2 more
openaire   +2 more sources

Characterization of key triacylglycerol biosynthesis processes in rhodococci. [PDF]

, 2016
Oleaginous microorganisms have considerable potential for biofuel and commodity chemical production. Under nitrogen-limitation, Rhodococcus jostii RHA1 grown on benzoate, an analog of lignin depolymerization products, accumulated triacylglycerols (TAGs ...
Amara, Sawsan, Diaz-Salazar, Carlos, Eltis, Lindsay D, Liu, Jie, Otani, Hiroshi, Seghezzi, Nicolas   +5 more
core   +2 more sources