Results 111 to 120 of about 43,385 (264)
Unsaturated biobased polyesters from bicyclic α‐pinene‐based diols
Polymer International, EarlyView.We present the synthesis of four biosourced unsaturated polyesters made from chiral terpene‐based diols and esters of renewable diacids. The resulting materials harbor a bicyclic pinene ring in their backbones which leads to enhanced thermal properties while still conferring susceptibility to enzyme hydrolysis for chains having a cis alkene.
Ganapathy Ranjani +4 more
wiley +1 more source
Carbon Capture Science & TechnologyThis study investigates the temperature-dependent carboxylation of single and mixed biomass-derived phenolic sodium salts with CO₂ via the Kolbe–Schmitt reaction. Reactions were performed at T = 175–225 °C, t = 2 h, and pCO₂ = 30 bar.
Omar Mohammad +3 more
doaj +1 more source
Deprotonated Dicarboxylic Acid Homodimers: Hydrogen Bonds and Atmospheric Implications
, 2016 Dicarboxylic acids represent an important class of water-soluble organic compounds found in the atmosphere. In this work we are studying properties of dicarboxylic acid homodimer complexes (HO2C(CH2)nCO2–[HO2C(CH2)nCO2H], n = 0–12), as potentially ...
Gao-Lei Hou (1293660) +2 more
core +1 more source
Statistical evaluation of nylon chemical recycling through acidolysis
Polymer International, EarlyView.Sustainable PA6 recycling through acidolysis enabled temperature‐driven depolymerization, modeled by regression analysis. Recycled products successfully replaced up to 30% monomer while preserving PA6 chemical composition or crystalline structure. Abstract This study focuses on the sustainability of plastics reporting the recycling of polyamide (PA ...
Diego Penzo +7 more
wiley +1 more source
, 1998 Complex formation between oxovanadium(IV) and several diazole derivatives (imidazole-4-acetic, imidazole-4,5-dicarboxylic and pyrazole-3,5-dicarboxylic acid) was studied in aqueous solution by pH-potentiometric and spectroscopic (electron paramagnetic ...
Surdy P. +5 more
core +2 more sources
Control of urea release through noncovalent derivatization with aliphatic dicarboxylic acids
Green Chemistry Letters and ReviewsImproving nitrogen use efficiency from nitrogen-based fertilizers is key in managing nutrient supply to agricultural crops. This work explores the potential of noncovalent derivatives (NCDs) as components of sustainable slow release nitrogen fertilizers.
Tessa Faulks +6 more
doaj +1 more source
Studies Towards a pH-Sensitive Anticancer Prodrug Model
, 2010 Tumour-activated prodrug (TAP) is designed to aim at increasing the prodrug selectivity to kill cancer cells. One strategy to is to design a TAP containing an amine cytotoxin, present as an amide function, which could be released more rapidly in the low ...
Teng, Xiao Shi
core
Optimization of the dilute maleic acid pretreatment of wheat straw
, 2009 Background In this study, the dilute maleic acid pretreatment of wheat straw is optimized, using pretreatment time, temperature and maleic acid concentration as design variables. A central composite design was applied to the experimental set up.
Hendrik H Beeftink +11 more
core +1 more source
Journal of Polymer Science, EarlyView.The curing of epoxidized linseed oil with citric, tartaric, and malic acid–based eutectic hardeners is compared to reveal how acid functionality, hydroxyl content, and molecular geometry govern activation energy, reaction rates, and network rigidity.
Mona Jamali Moghadam Siahkali +3 more
wiley +1 more source
Polymorphism in pyridine-2,6-dicarboxylic acid: Competition between “robust” synthons
, 2006 A new polymorph of anhydrous pyridine-2,6-dicarboxylic (dipicolinic) acid in which salt formation is favoured over carboxylic acid dimerisation is reported, together with the solid-state architectures of a novel dipicolinic acid dihydrate and a ...
Hursthouse, Michael B. +3 more
core +1 more source