Results 171 to 180 of about 5,062 (222)

Recycling of polyurethane scraps via acidolysis

Chemical Engineering Journal, 2020
Abstract Polyurethanes foams (PUF) are used in a wide variety of applications, therefore the quantity of the PUF residues generated is an ecological and environmental problem. Hence, the concerns about the disposal of PUF scraps can be minimized by their recycling.
Bruno Godinho, Ana Barros-Timmons
exaly   +2 more sources

The acidolysis of 2-pyridyl benzoate

Tetrahedron Letters, 1971
Tesis (D) - Institut Teknologi Bandung, 1974Terdapat versi mikrofis (Kode panggil: PDII-93-0061 ms)
Miss Pratiwi Amin Singgih, Matthijs J. Janssen   +1 more
openaire   +1 more source

Photodegradation of sugar cane bagasse acidolysis lignins [PDF]

Journal of Photochemistry and Photobiology A: Chemistry, 2005
Abstract Acidolysis lignins of unbleached (SCB) and peroxide bleached (PB-SCB) sugar cane bagasse fibers were submitted to UV irradiation to approach photodegradation of materials made from these fibers. Similar degradation was observed by UV–vis absorption on dilute solution (0.04 g mL −1 ) of lignins after irradiation at 254 nm (low pressure ...
Ruggiero, Reinaldo, Machado, Antonio E.H., Gardrat, Christian, Hoareau, William, Grelier, Stéphane, Siegmund, Bertrand, Castellan, Alain   +6 more
openaire   +1 more source

Acidolysis of Wood in Ionic Liquids

Industrial & Engineering Chemistry Research, 2010
Three wood species including Eucalyptus grandis (E. grandis), Southern pine (S. pine), and Norway spruce thermomechanical pulp (N. spruce TMP) were dissolved in the ionic liquid (IL) 1-allyl-3-methylimidazolium chloride ([Amim]Cl), and then they were pretreated with small amounts of hydrochloric acid, as a function of time.
Bin Li, Ilari Filpponen, Dimitris S. Argyropoulos   +2 more
openaire   +1 more source

Thioacidolysis of Lignin: Comparison with Acidolysis

Journal of Wood Chemistry and Technology, 1985
Abstract Arylglycerol-ether bonds of lignin samples or model compounds vera selectively cleaved by treatment with dioxane-ethanethiol (9/1, v/v) and 0.2 N HBF4 etherate or 0.2 N BF3 etherate at 100°C for four hour3. Monomers resulting from “thioacidolysis” were identified by gas chroraatography-mass spectrometry of their trimethylslly derivatives ...
Catherine Lapierre, Bernard Monties, Christian Rolando, Laboratorie de Chirale   +3 more
openaire   +1 more source

Thermolysis and photochemical acidolysis of selected polymethacrylates

Macromolecules, 1988
Etude du comportement thermique de polymethacrylates de benzyle, α-methylbenzyle, α,α-dimethylbenzyle, cyclopropyl carbinol et de t ...
Hiroshi Ito, Mitsuru Ueda
openaire   +1 more source

CO₂-Acidolysis of iminoboronate ester based polymersomes

Journal of Materials Chemistry B, 2018
The iminoboronate-terminalized star-like prodrug N3-(OEG-IBCAPE)4 was prepared to investigate the CO2-acidolysis of polymersomes with a tunable release feature of CAPE molecules.
Ruidong Cheng, Guo Li, Li Fan, Zhaotie Liu, Zhongwen Liu, Jinqiang Jiang   +5 more
openaire   +2 more sources

Kinetics of the acidolysis of dimethyl mercury

Journal of Inorganic and Nuclear Chemistry, 1976
Abstract The acidolysis rate constants of dimethyl mercury in dilute HCl and HBr have been measured in the pressure range 1–1000 atm. The results obey the van't Hoff law, the logarithm of the rate constant varying linearly with pressure. The acidolysis rate constants of dimethyl mercury at higher pressures are 2–5 times greater than those at ...
R. James Maguire, Subhash Anand
openaire   +1 more source

Chemical separation of polyurethane via acidolysis – combining acidolysis with hydrolysis for valorisation of aromatic amines

Green Chemistry
Neat acidolysis of flexible PU foam with succinic acid is demonstrated to give quantitative imide formation and high-quality polyols. The easily separable imides are further converted to anilines which may re-enter the PU-value chain.
Thomas B. Bech, Bjarke S. Donslund, Steffan K. Kristensen, Troels Skrydstrup   +3 more
openaire   +2 more sources

Acidolysis of Tristearin with Selected Long-Chain Fatty Acids

Journal of Agricultural and Food Chemistry, 2007
Five lipases, namely, Candida antarctica (Novozyme-435), Mucor miehei (Lipozyme-IM), Pseudomonas sp. (PS-30), Aspergillus niger (AP-12), and Candida rugosa (AY-30), were screened for their effect on catalyzing the acidolysis of tristearin with selected long-chain fatty acids. Among the lipases tested C.
Fayez, Hamam, Fereidoon, Shahidi
openaire   +2 more sources