Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"sulfobetaine"”.
-
Preparation and Biocompatibility of Electrospun Zwitterionic Poly(Sulfobetaine Methacrylate) for Wound Dressing Applications
Poly(sulfobetaine methacrylate) (PSBMA) can be potentially utilized in filtration and wound dressing applications for which nanofibers structures are highly desirable. In this work, a series of PSBMAs with different molecular weights were synthesized, characterized, and electrospun into nanofibers. …
-
Twofold switchable block copolymers based on new polyzwitterions
… (“SPP”), the closely related sulfobetaine monomers were synthesized and polymerized by reversible addition-fragmentation chain transfer (RAFT) polymerization, using a fluorophore labeled RAFT agent. The polyzwitterions of systematically varied molar mass were characterized with …
-
Effects of Functionality and Charge in the Design of Acrylic Polymers
… 100 nm. Free radical copolymerization of nBA and sulfobetaine methacrylamide produced zwitterionic copolymers with 6-13 mol % betaine. Dynamic mechanical analysis revealed a rubbery plateau and biphasic morphology similar to ionomers. Electrospinning from chloroform/ethanol solutions (80/20 v/v) …
-
The role of surfactants in the leaching of zinc sulphide minerals at temperatures above the melting point of sulphur
… lignin sulfonic acid, cocoamido hydroxyl sulfobetaine (CAHSB), tallow amido hydroxyl sulfobetaine (TAHSB), cocoamido betaine (CAB), naphthalene sulfonic acid-formaldehyde condensates and orthophenylene diamine (OPD) in the liquid sulfur-aqueous zinc sulphate-zinc sulfide mineral system has …
-
Synthesis and Characterization of Zwitterion-Containing Acrylic (Block) Copolymers for Emerging Electroactive and Biomedical Applications
… quaternization of the tertiary amines into sulfobetaine functionalities. Both DSC and DMA results suggested that the electrostatic interactions in the low Tg central blocks of poly(sty-b-nBA-b-sty) enhanced block copolymer phase separation. SAXS results indicated that the presence of the …
-
The Design, Synthesis, and Evaluation of Zwitterionic and Cationic Lipids for In Vivo RNA Delivery and Non-Viral CRISPR/Cas Gene Editing
… addition or epoxide opening, and a zwitterionic sulfobetaine head group. ZALs were designed with a combination of cationic and zwitterionic lipid properties, to help stabilize and effectively deliver long RNA molecules. A lead compound, ZA3-Ep10, was effective for in vivo messenger RNA delivery …
-
Conformational investigations of a model polyzwitterion and its applications in oil recovery
… in a high density comb type polyzwitterion, poly(sulfobetaine methacrylamide) (polySBMA), via small angle neutron scattering. The phenomenon is probed at a range of molecular weights by utilizing low dispersity homopolymers synthesized via controlled radical polymerization methods. Unique non …
-
Development of Novel High Temperature Mixed Matrix Membranes (MMMs) for Oil Sands Wastewater Treatment
… (CB), phosphatidylcholine (PC) and sulfobetaine (SB) for the modification of poly (vinylidene fluoride) PVDF membrane. Based on simulated data, PC is the most preferable zwitterion that leads to a more stable and hydrophilic mixed matrix membrane with enhanced oil-antifouling …
-
New thin shell silica particles and HILIC phases for liquid chromatography: synthesis, characterisation and functionalisation
… available ZIC®-HILIC column containing sulfobetaine stationary phase. The effects of pH, buffer concentration and organic solvent composition changes on retention and selectivity were investigated using anionic, cationic and zwitterionic analytes to decipher the retention mechanisms of …
-
Advancing Elastomers to Additive Manufacturing Through Tailored Photochemistry and Latex Design
… by interactions between large phosphonium sulfobetaine dipoles. Broadband dielectric spectroscopy (BDS) confirmed the presence of these dipoles through significant increases in static dielectric content. Small-angle X-ray scattering (SAX) illustrated ionic domain formation for all charged …