Results 81 to 90 of about 23,553 (234)

New Biobased Polyester Polyols With Tunable Tg Values From 4‐Vinylguaiacol‐Derived Monomers

ChemSusChem, Volume 19, Issue 15, 14 August 2026.
Biobased low‐molecular‐weight polyesters were obtained by ROCOP of guaiacol‐derived epoxides with cyclic anhydrides. Varying the length of the acyl moieties on the epoxides and the cyclic anhydride structures, it is possible to tune the Tg's within an 80 ºC wide temperature range.
Erika Zangelmi, Orlando Santoro, Raffaele Cucciniello, Francesco Della Monica, Lorella Izzo   +4 more
wiley   +1 more source

Electrochemical Polymerization of Guaiacol in Organic Solvents and Analytical Performance of the Poly (Guaiacol) Modified Electrode Towards Phenol Antioxidants

Chemosensors
The electrochemical polymerization of guaiacol was studied in different organic solvents. Significant electrode blocking was observed in dichloromethane. Microscopic studies verified the formation of a coherent deposit on the platinum electrode.
László Kiss, Péter Szabó, Sándor Kunsági-Máté   +2 more
doaj   +1 more source

Efficient Catalytic Hydrogenation of Lignin-Derived Phenolics Under Mild Conditions

Chemistry
This paper studies the catalytic hydrogenation reduction of lignin-derived phenolic compounds, such as catechol, guaiacol (O-methoxyphenol), phenol, P-methylphenol, O-ethylphenol, O-ethoxyphenol, etc.
Yumeng Song, Ping Chen, Hui Lou, Xiaoming Zheng, Xiangen Song   +4 more
doaj   +1 more source

Identification of Volatile Odor Compounds in Extracts of Four Types of Herbaceous Plant Spices via GC × GC–O‐TOF MS

eFood, Volume 7, Issue 4, August 2026.
In this study, sensory evaluation, electronic nose, solid‐phase microextraction, and comprehensive two‐dimensional gas chromatography‐olfactometry‐time‐of‐flight mass spectrometry were used to analyze the volatile compounds and key odor‐active components in the extracts of sour horn, alfalfa, chicory, and fenugreek, and a total of 59 odor‐active ...
Suxing Tuo, Qinghui Jia, Shuang Bi, Yixin Dai, Ting Deng, Hongbing Lu, Jiaxiao Cai, Zifeng Li, Cheng Yang, Kejun Zhong, Bo Kong, Ye Liu   +11 more
wiley   +1 more source

Sustainable Photoelectrochemical Direct Lignin Upcycling via Ni‐Co Phthalocyanine Catalysts Integrated With Organic Semiconductors

EcoMat, Volume 8, Issue 8, August 2026.
An integrated photoelectrochemical system combining Ni‐Co phthalocyanines with organic semiconductors directly oxidizes kraft lignin with long‐term stability. The system promotes efficient lignin oxidation, enables tunable reactivity between vanillin and vanillic acid, and achieves high photocurrent densities.
Yoonsung Jung, Yejoon Kim, Yunseo Jang, Jun Beom Hwang, Yeonji Yuk, Enok Lee, Jimin Ahn, Sanghan Lee   +7 more
wiley   +1 more source

Towards Bio‐Based Benzoxazines (2015–2025): A Critical Review of Renewable Building Blocks, Formaldehyde‐Free Aldehydes, and ECHA Hazard Landscape

Polymers for Advanced Technologies, Volume 37, Issue 8, August 2026.
ABSTRACT This review provides a critical overview of research on fully bio‐based benzoxazines over the period 2015–2025. A bibliometric analysis based on the Web of Science database is used to map how the field has evolved and to identify the renewable building blocks that have been most widely adopted.
Elizabeth Alvarez Perez, Alice Mija
wiley   +1 more source

4-Vinyl Guaiacol: A Key Intermediate for Biobased Polymers

Molecules
In order to contribute to the shift from petro-based chemistry to biobased chemistry, necessary to minimize the environmental impacts of the chemical industry, 2-methoxy-4-vinylphenol (4-vinyl guaiacol, 4VG) was used to synthesize a platform of biobased ...
Elena Rigo, Cédric Totée, Vincent Ladmiral, Sylvain Caillol, Patrick Lacroix-Desmazes   +4 more
doaj   +1 more source

Engineering the substrate scope of the thermostable phenolic acid decarboxylase N31 towards sterically hindered phenolic acids

Protein Science, Volume 35, Issue 8, August 2026.
Abstract Phenolic acid decarboxylases (PADs) convert bio‐based hydroxycinnamic acids into valuable hydroxystyrene monomers under mild reaction conditions. These compounds are in high demand in polymer production, cosmetics, and flavoring. Especially 4‐vinyl syringol, the decarboxylation product from sinapic acid, generates polymers with similar thermal
Kristin K. F. Bauer, Sonja Vaupel, Jacques Gay, Eva Vos, Aron Wanz, Daniel Kracher, Tobias Schöngassner, Lars‐Erik Meyer, Shina C. L. Kamerlin, Selin Kara, Robert Kourist   +10 more
wiley   +1 more source

Effect of Mesopore Structural Parameters in Alumina Supports on Catalytic Hydrodeoxygenation of Guaiacol to Cycloalkanes via Ni-Supported Al₂O₃ Catalysts

Energies
The elevated oxygen content in lignin-derived oil restricts its direct application as a liquid fuel. Ni-based Al2O3 catalysts are commonly employed to enhance the quality of lignin-derived oil via the hydrodeoxygenation (HDO) process.
Wen Huang, Chengyan Wen, Yanting Su, Xinghua Zhang, Longlong Ma   +4 more
doaj   +1 more source

Selective catalytic transformation of lignin with guaiacol as the only liquid product

Chemical Science, 2019
Guaiacol is an important feedstock for producing various high-value chemicals. However, the current production route of guaiacol relies heavily on fossil resources. Using lignin as a cheap and renewable feedstock to selectively produce guaiacol has great
Xiaojun Shen, Qinglei Meng, Qingqing Mei, Huizhen Liu, Jiang Yan, Jinliang Song, Dongxing Tan, Bingfeng Chen, Zhanrong Zhang, Guanying Yang, Buxing Han   +10 more
semanticscholar   +1 more source