Bio-Based Hyperbranched Toughener From Tannic Acid and Its Enhanced Solvent-Free Epoxy Resin with High Performance

2019 ◽  
Vol 7 (12) ◽  
pp. 1333-1346
Author(s):  
Jie Xu ◽  
Jiayao Yang ◽  
Hengxu Wang ◽  
Peng Lin ◽  
Xiaohuan Liu ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Tannic Acid ◽  
High Performance ◽  
Solvent Free

scholarly journals Design of a New Gemini Lipoaminoacid with Immobilized Lipases Based on an Eco-Friendly Biosynthetic Process

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 164
Author(s):  
Patrícia M. Carvalho ◽  
Rita C. Guedes ◽  
Maria R. Bronze ◽  
Célia M. C. Faustino ◽  
Maria H. L. Ribeiro
Keyword(s):  
High Performance ◽  
Transfection Efficiency ◽  
Sol Gel ◽  
Reaction Rates ◽  
Solvent Free ◽  
Bioactive Molecules ◽  
Thermomyces Lanuginosus ◽  
Chemical Production ◽  
Immobilized Lipases ◽  
Free Media

Lipoaminoacids (LAA) are an important group of biosurfactants, formed by a polar hydrophilic part (amino acid) and a hydrophobic tail (lipid). The gemini LAA structures allow the formation of a supramolecular complex with bioactive molecules, like DNA, which provides them with good transfection efficiency. Since lipases are naturally involved in lipid and protein metabolism, they are an alternative to the chemical production of LAA, offering an eco-friendly biosynthetic process option. This work aimed to design the production of novel cystine derived gemini through a bioconversion system using immobilized lipases. Three lipases were used: porcine pancreatic lipase (PPL); lipase from Thermomyces lanuginosus (TLL); and lipase from Rizhomucor miehei (RML). PPL was immobilized in sol-gel lenses. L-cystine dihydrochloride and dodecylamine were used as substrates for the bioreaction. The production of LAA was evaluated by thin layer chromatography (TLC), and colorimetric reaction with eosin. The identification and quantification was carried out by High Performance Liquid Chromatographer-Mass Spectrometry (HPLC-MS/MS). The optimization of media design included co-solvent (methanol, dimethylsulfoxide), biphasic (n-hexane and 2-propanol) or solvent-free media, in order to improve the biocatalytic reaction rates and yields. Moreover, a new medium was tested where dodecylamine was melted and added to the cystine and to the biocatalyst, building a system of mainly undissolved substrates, leading to 5 mg/mL of LAA. Most of the volume turned into foam, which indicated the production of the biosurfactant. For the first time, the gemini derived cystine lipoaminoacid was produced, identified, and quantified in both co-solvent and solvent-free media, with the lipases PPL, RML, and TLL.

Mussel-inspired surface functionalization of porous carbon nanosheets using polydopamine and Fe3+/tannic acid layers for high-performance electrochemical capacitors

2017 ◽  
Vol 5 (48) ◽  
pp. 25368-25377 ◽  
Author(s):  
Yeong A. Lee ◽  
Jiyoung Lee ◽  
Dae Wook Kim ◽  
Chung-Yul Yoo ◽  
Sang Hyun Park ◽  
...  
Keyword(s):  
Surface Modification ◽  
Tannic Acid ◽  
Surface Functionalization ◽  
Porous Carbon ◽  
High Performance ◽  
Electrochemical Capacitors ◽  
Carbon Nanosheets

The mussel-inspired surface modification for high-performance electrochemical capacitors is demonstrated.

Facile alkali-assisted synthesis of g-C3N4 materials and their high-performance catalytic application in solvent-free cycloaddition of CO2 to epoxides

RSC Advances ◽  
2016 ◽  
Vol 6 (60) ◽  
pp. 55382-55392 ◽  
Author(s):  
Jie Xu ◽  
Jie-Kun Shang ◽  
Quan Jiang ◽  
Yue Wang ◽  
Yong-Xin Li
Keyword(s):  
High Performance ◽  
Alkali Treatment ◽  
Solvent Free ◽  
Catalytic Activities ◽  
Catalytic Application

g-C3N4 materials have been prepared at lower temperatures (450–475 °C) by the aid of alkali treatment. In cycloaddition of CO2 to epoxides, the g-C3N4 materials demonstrated high and stable catalytic activities.

scholarly journals Development of Prosopis juliflora carbon-reinforced PET bottle waste-based epoxy-blended bio-phenolic benzoxazine composites for advanced applications

RSC Advances ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 5656-5665 ◽  
Author(s):  
V. Selvaraj ◽  
T. R. Raghavarshini ◽  
M. Alagar
Keyword(s):  
Epoxy Resin ◽  
High Performance ◽  
Hybrid Composites ◽  
Prosopis Juliflora ◽  
Schematic Representation ◽  
Advanced Applications

Schematic representation of development of functionalised Prosopis juliflora carbon (f-PJC) reinforced PET-epoxy resin (PETEP) blended bio-phenolic (cardanol) based benzoxazine (CBz) hybrid composites for high performance applications.

Polytopic carriers for platinum ions: from digalloyl depside to tannic acid

2020 ◽  
Vol 44 (28) ◽  
pp. 12227-12235
Author(s):  
Marco Fogagnolo ◽  
Paola Bergamini ◽  
Elena Marchesi ◽  
Lorenza Marvelli ◽  
Roberto Gambari ◽  
...  
Keyword(s):  
Tannic Acid ◽  
Environmentally Friendly ◽  
Platinum Complexes ◽  
Solvent Free ◽  
Natural Antioxidant ◽  
Free Process

Multinuclear platinum complexes of the natural antioxidant tannic acid and its aglycone part methyl digallate can be prepared via an environmentally friendly, solvent-free process exploiting the convenient precursor [PtCO3(Me2SO-S)2].

scholarly journals Solvent-free production of carbon materials with developed pore structure from biomass for high-performance supercapacitors

2020 ◽  
Vol 150 ◽  
pp. 112384 ◽  
Author(s):  
Lang Huang ◽  
Qiong Wu ◽  
Shouxin Liu ◽  
Shitao Yu ◽  
Arthur J. Ragauskas
Keyword(s):  
Pore Structure ◽  
High Performance ◽  
Carbon Materials ◽  
Solvent Free
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