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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"anionic polymerisation"”.
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Polymerisation of vinyl monomers in continuous-flow reactors. An experimental study, which includes digital computer modelling, of the homopolymerisation of styrene and methylmethacrylate by anionic and free radical mechanisms respectively in continuous flow-stirred-tank reactors.
… thesis, namely the chemistry of free radical and anionic polymerisation, molecular weight control in each type of polymerisation, polymerisation reactors, computer simulation of polymerisation processes and polymer characterisation by gel permeation chromatography. A novel computer model has been …
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Functionalised polymers
… The butyllithium initiated anionic polymerisation of this protected monomer resulted in a polymer which had a very narrow molecular weight distribution (Mw/Mn= 1.05) and subsequent hydrolysis of the polymer resulted in poly(6(vinylphenyl)-hexan-2-one) which was derivatised …
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PMMA Clay Nanocomposites
… in-situ using a free radical suspension polymerisation technique. The weight fraction of clay in the PCN was systematically varied in order to understand the effect of clay on the physical properties of the resulting PCNs. However, unexpectedly it was found that the weight fraction of …
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Synthesis and Blend Behaviour of Multi-End Capped Polyethylene
… well defined multiple hydrophobic groups, via anionic polymerisation, resulting in analogues of end-functionalised LLDPE. Physical properties have been characterised using a variety of techniques, namely ion beam analysis (IBA), contact angle measurements and several neutron scattering …
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Synthesis and characterisation of vinyl block copolymers
A study has been made of the anionic polymerisation of methyl methacrylate using butyllithium and polystyryl lithium as initiators and the effects of lithium chloride and aluminium alkyls on the molecular weight and molecular weight distributions. Diblock copolymers of styrene-b-methyl methacrylate …
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Synthesis and characterisation of polyamide 6 blends made by reactive extrusion
Continuous anionic polymerisation of catalysed E -caprolactam has been undertaken on an intermeshing co-rotating twin-screw extruder for the preparation of polyamide 6. An optimised extruder screw and barrel configuration was used during reactive extrusion process to permit necessary feeding, …
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Katalytische Styrol-Homo- und Copolymerisation und neue Cycloolefinpolymere auf der Basis von 1,3-Cyclohexadien
… waren Untersuchungen zur Styrol Homo- und Copolymerisation an neuartigen Gruppe-4-Metall-Bis(phenolat)-Katalysatoren sowie die Herstellung von Homo- und Copolymeren des 1,3-Cyclohexadiens (CHD) mit variablen molekularen Architekturen. <br>Mit Methylaluminoxan (MAO)-aktivierten Gruppe 4 …
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Synthesis and characterization of polymacromonomers based on polyethers
… synthesis of macromonomers was based on living anionic polymerization of oxiranes. Two monomers were used: 1-ethoxyethyl glycidyl ether (glycidol acetal), which after hydrolysis forms hydrophilic glycidol blocks and glycidyl phenyl ether forming hydrophobic blocks. Polymerizable double bonds …
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Synthesis and characterization of stimuli-responsive microgels based on poly(glycidol)block copolymers
New water soluble, attainable to ATRP polymerization Cl-terminated poly(glycidol) macroinitiators were prepared by modification of (Omega)-hydroxyl group of poly(glycidol acetal) using 2-chloropropionyl chloride fallowed by selective acidic deprotection of acetal groups. The obtained …