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Showing 1 to 20 of 29 for “"Maleic acid"”.

  1. Process design for the production of maleic acid hydrazide for weed control

    Moncrief, Eugene CharlesVirginia Polytechnic Institute1957

    In the investigation the effects of excess maleic anhydride, hydrazine hydrate-solvent reagent addition time, volume of reaction mass after concentration by heating at 100 °C, mixing of reactants, and the solvent selected were studied for the heterogeneous reaction of maleic anhydride and hydrazine …

    vt Repository record

  2. Effect of maleic acid on the selectivity of glucose and fructose dehydration and degradation

    Zhang, Ximing

    … This study focuses on the Lewis and Brønsted acid effect on hexose dehydration for HMF production. We report the positive effect of maleic acid, a dicarboxylic acid used as Brønsted acid, on the selectivity of hexose dehydration to 5-hydroxymethyfurfural (HMF), and subsequent hydrolysis to …

    purdue-thes Repository record

  3. Conversion of the batch process of manufacture of maleic acid hydrazide to a continuous process

    Hooper, Henry V.Virginia Polytechnic Institute1957

    … to vegetation when improperly applied. Maleic acid hydrazide is a relatively new herbicide, possessing the hormone—like property of retarding plant growth for long periods of time by preventing the division of cell nuclei. Field applications of the hydrazide have shown good growth …

    vt Repository record

  4. ANALYSIS OF PHARMACEUTICALS AND BIOMOLECULES USING HPLC COUPLED TO ICP-MS AND ESI-MS

    Cartwright, Andrew James2005

    … (TMPP) was used for the derivatisation of maleic, fumaric, sorbic and salicylic acids to facilitate determination by HPLC-electrospray ionisation tandem mass spectrometry (ESIMS/ MS) in positive ion mode. Improvements in detection limits post-derivatisation were achieved, and this method …

    plymouth Repository record

  5. Applications of ultrasound in pharmaceutical processing and analytics.

    Apshingekar, Prafulla P.University of Bradford2014

    … kHz) on slurry co-crystallisation of caffeine / maleic acid and carbamazepine / saccharin was investigated. To validate low power ultrasound monitoring technique, it was compared with the other techniques (PAT tools) such as in-line rheology and in-line NIR spectroscopy. In-line rheological …

    bradford Repository record

  6. SELECTIVE ADSORPTION OF DIBENZOTHIOPHENES ON ACTIVATED CARBONS WITH METAL SPECIES DEPOSITED ON THEIR SURFACES

    Lison, Jakub

    … are derived from poly (4-styrenesulfonic acid-co-maleic acid) salts (sodium or transition metals). They are investigated in a dynamic breakthrough process using model diesel fuel containing dibenzothiophene (DBT) and 4, 6-dimethyldibenzothiophene (DMDBT). The performance of adsorbents is …

    cuny Repository record

  7. Developing test strips for naked-eye detection of alpha-hydroxy acids using indicator-displacement assays: an application of molecular recognition

    Nguyen, Binh ThanhThe University of Texas at Austin2005

    … Two examples are the dihydroxylation of maleic acid and fumaric acid catalyzed by osmium tetroxide in water, and the hydrolysis of D-dimethyl tartrate. The assay employed a receptor that has 1,3,5-trisubstituted-2,4,6- triethylbenzene scaffold incorporating boronic acid and guanidinium …

    texas Repository record

  8. Polymer Supported Lipid Bilayer Membranes for the Integration of Transmembrane Proteins

    Renner, LarsTechnische Universität Dresden

    … of polymer cushions consisting of alternating maleic acid copolymers. Maleic acid copolymers provide a versatile platform to adjust the physico-chemical behaviour by the choice of the comonomer unit. The formation of sLBMs was triggered by a transient reduction of the electrostatic repulsion …

    qucosa-diss

  9. The evaluation of an organophosphate thermosetting resin for use in a high temperature resistant composite and a study of chemistry of ionomer cements

    Reader, AL1974

    … (ASPA), prepared from aqueous poly(acrylic acid) and an ion-leachable aluminosilicate glass, has been developed. The system has been extended by studying other aqueous polymers. The factors influencing the gelation and the properties of the set cements have been examined. Poly(carboxylic …

    brunel Repository record

  10. Synthesis and Solution Properties of Semi-rigid Polyelectrolytes and Polyampholytes

    Savage, AliceVirginia Tech2014

    … fashion with acceptor comonomers such as maleic anhydride and maleimide. These sterically crowded polymer backbones are classified as semi-rigid. As this is an uncommon category of polymer backbone rigidity, examples of semi-rigid and rigid polyzwitterions in the literature were reviewed …

    vt Repository record

  11. The Formation of Pharmaceutical Co-crystals by Spray Drying. An Investigation into the Chemical and Physical Factors Affecting the Production of Pharmaceutical Co-crystals by Fast Evaporation and Spray Drying

    Mehta, BhanviUniversity of Bradford2016

    … theophylline (THEO) with various di-carboxylic acids. The incongruently soluble pair of CAF and THEO with di-carboxylic acids acquires large solubility difference which is important to consider for its utility in product development. Based on previous assumption that maleic acid (MAL) elevates …

    bradford Repository record

  12. Chemical Surface Modification of Polycarbonate to Increase Hydrophilicity

    Zimmerle, Brittney ReneeUniversity of Missouri--Kansas City2023

    … polycarbonate was submerged in poly(acrylic acid-co-maleic acid) (PAA-MAA) solution, heated, rinsed in DI water, and dried with air. PEI introduced more amine groups than PPD, and PAA-MAA uses those amine groups to expose more polar carboxylic acid groups. PEI and PAA-MAA were tested by …

    umkc Repository record

  13. Novel Methods for Co-crystallisation

    Pagire, Sudhir K.University of Bradford2014

    … the solvent were investigated using caffeine / maleic acid as a model co-crystal pair. The mechanism of co-crystallisation under microwave irradiation has been proposed. The co-crystals of plumbagin with improved solubility were obtained with the coformers such as hydroquinone, resorcinol and …

    bradford Repository record

  14. An exploration of the mechanism of hydrophilic interaction chromatography (HILIC) and the application of HILIC in metabolomic profiling

    Bawazeer, Sami Salim A.University of Strathclyde2016

    … phase modifiers on the retention behaviour of acidic and neutral test probes was studied on silica gel based columns which confirmed the hypothesis that HILIC is due to a combination of hydrophilic interactions and electrostatic interactions. Among the acidic probes tested, the more negatively …

    strathclyde Repository record

  15. Optimisation of microneedle array design for microneedle mediated iontophoretic transdermal drug delivery

    Garland, MartinQueen's University Belfast2011

    … blends of 20% w/w poly(methyl vinyl ether co maleic acid) (PMVE/MA). Novel hydrogel forming MN arrays were fabricated from aqueous blends containing 15% w/w PMVEIMA and 7.5% w/w poly(ethyleneglycol) (PEG, Mw = 10 kDa). MN arrays were fabricated in a laser-engineered micro-moulding process. …

    qu-belfast Repository record

  16. Combining chemical with biological oxidation for efficient treatment of chloronitrobenzene in groundwater

    Amiri, Samia, author, Blotevogel, Jens, advisor, Sale, Thomas C., committee member, DiVerdi, Joseph A., committee memberColorado State University. Libraries2019

    … to form dicarboxylic products including muconic acid, succinic acid, malic acid, and maleic acid. Further electrochemical oxidation of these dicarboxylates was slower by about two orders of magnitude. To evaluate the universal biodegradability of the generated intermediates, the electrochemically …

    colostate Repository record

  17. Polymeric microneedle systems for enhanced transdermal drug delivery

    Zaid Alkilani, AhlamQueen's University Belfast2013

    … containing 20% w/w poly(methyl vinyl ether co maleic acid) (Gantrez® S97), 7.5% w/w poly(ethylene glycol) (PEG) and 3% sodium carbonate (Na2C03). In addition, dissolving MN arrays loaded with a high dose of non-potent therapeutic drug were fabricated from aqueous blends of 70% w/w Gantrez® AN …

    qu-belfast Repository record

  18. Two-stage acidic-alkaline pretreatment of Miscanthus for bioethanol production

    Guo, BinUniversity of Illinois at Urbana-Champaign2013

    … alteration and ethanol yield. A two-stage acidic-alkaline pretreatment was proposed to obtain most intact monosaccharides from cellulose and hemicellulose. Dilute sulfuric acid pretreatment was performed in the first stage mainly for hemicellulose removal while the second stage carried out …

    uiuc Repository record

  19. Enhanced Mineralization of Phenol and other Hydroxylated Compounds in a Photocatalytic Process assisted with Ferric Ions

    Ortiz-Gomez, Aaron2006

    … and 1,4-benzoquinone) and carboxylic acids (fumaric acid, maleic acid, oxalic acid and formic acid). iii 7 Then, the extent of influence of Fe cations on the oxidation and mineralization rates of phenol and other hydroxylated aromatics is evaluated. It is shown that at reaction …

    uwo Repository record

  20. Microneedle array patches for skin hyperthermia and enhanced intradermal drug delivery

    Cárcamo Martínez, ÁlvaroQueen's University Belfast2021

    … blends containing poly(methyl vinyl ether-co-maleic acid) and poly(ethylene glycol). These polymeric blends were used to fabricate films to heat up a thin skin model upon Near Infrared (NIR) laser irradiation. This technology circumvents skin deposition and injection of GnRs and, thereby, the …

    qu-belfast Repository record

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