The work described in this thesis is dedicated to the development of polymeric membrane materials for the separation of co2 from light gases, and in particular to the separation of co2 from nitrogen as required in a post-combustion capture conguration for the separation of co2 from flue gases. Intrinsic properties of poly(ether-b-amide) (pebax®1074) for gas permeation and pervaporation by yiyi shangguan a thesis presented to the university of waterloo in fulfillment of the. In this thesis we use molecular simulations to study the molecular-level interactions and assembly of one class of polymer nanocomposites, namely diblock-copolymer grafted nanoparticles in solvent and in polymer matrix. To the graduate council: i am submitting herewith a thesis written by elizabeth angela stewart entitled applications of mass spectrometry to synthetic copolymers. Typically either a heterogeneous or homogeneous ethylene copolymer depending on the catalyst used for its synthesis (ziegler-natta or metallocene, respectively) 1, 2 the development of single-site metallocene catalyst has allowed for large-scale.
Block copolymer ion gels for co 2 separations a dissertation submitted to the faculty of the graduate school of the university of minnesota by yuanyan gu. Supramolecular triblock copolymer complexes g gobius du sart phd thesis university of groningen the netherlands may 2009 printed by: ipskamp drukkers. Rheological behavior of block copolymers and block copolymer/homopolymer blends this thesis has been carried out from january to june 2011 all experimental work. Block copolymer self-assembly and co-assembly shape function and application feng li thesis submitted in partial fulﬁlment of the requirements for the degree of doctor.
This thesis paper will provide data to show that cyclic olefin copolymer blister film can be used as a beneficial alternative to polyvinyl chloride film which is more commonly used in the pharmaceutical market today. The hydrolysis of acrylamide-acrylic acid copolymers has been studied as a function of ph and of the initial composition of the samples our experimental results confirm the intramolecular catalysis by neighbouring undissociated carboxylate groups for 3 11. Pebax 7233 is performing perfectly due to its high flex modulous, energy return, and ability to withstand cyclical fatigue (does not seem to take a set), low crack propagation, etc the only problem it's cost prohibitive.
This thesis is brought to you for free and open access by the iowa state university capstones, theses and dissertations at iowa state university digital repository it has been accepted for inclusion in graduate theses and dissertations by an authorized administrator of iowa state university digital. Distribution of monomers in the copolymerlikewise the monomer reactivity ratios were evaluated mathematically in comparison in the (f-r) method with the data sty r. Iii block copolymer vesicles: self-assembled behavior for use in biomimicry a thesis by jeffery simon gaspard submitted to the office of graduate studies of. Hello, i am looking for a substitute for the pebax 7233sp we presently use (but not available because of the 'force majure' declared by arkema. Breathable films arkema has developed a technology for making monolithic breathable membranes breathability can be described as the moisture vapour transmission rate (mvtr) and it represents the amount of water vapour that passes through a film or a structure over a certain period of time.
Design, synthesis, characterization of a new ph-responsive copolymer and its application in oil sands tailings treatment by jian guo a thesis submitted in partial fulfillment of the requirements for the degree of. Christopher thurber, thesis defense august 2015 webcast (use interfacial as the login) abstract improved adhesion and compatibilization through interfacially localized catalysts christopher thurber, thesis defense advised by chris macosko and tim lodge august 5, 2015 most plastic products consist of two or more polymers. Poly(ethylene-co-acrylic acid) [peaa] is a carboxylated ethylene copolymer primarily produced under the trade names of nucrel, surlyn and primacor, it is synthesized via the high pressure, free radical copolymerization of ethylene and acrylic acid. The pebax®2533 membranes showed high organic gas permeabilities plasticization effects on the membrane were pronounced with propane and propylene at elevated pressure (100 psig) activation energies of permeation (ep) were determined. Data of copolymer solutions for the first time a compilation of thermodynamic data for copolymer solutions from the original literature is available taking into account vapor-liquid equilibrium (vle) data, liquid-liquid equilibrium (lle) data.
The pebax solution has a tendency to gellify and using ethanol+water as solvent prevents iti've experienced it and it workswhat i'm affraid is that terminal groups of pegdme (methyl groups) make. The exchange of block copolymer molecules between micelles and solution is very slow compared to the exchange kinetics observed for low molecular weight surfactant micelles. Iii an in vitro study of anticariogenic compounds incorporated into bis-gma/tegdma copolymer abstract composite resins continue to evolve and are increasingly favoured by the public and dental professionals. The thesis consists of two main parts part i is the introductory part and includes chapters 1-3 with general information and a literature overview.
This thesis aims manufacturing nanopatterned graphene with controlled defects in large area-using bottom-up process, specifically block copolymer lithography we explored and presented two main.