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Title: Water-soluble polymers from controlled free-radical polymerisation
Author: Eason, Michael Douglas
ISNI:       0000 0001 3437 0294
Awarding Body: University of Warwick
Current Institution: University of Warwick
Date of Award: 2000
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Functional water-soluble polymers are used in the detergents industry as antidye transfer agents. Anti-dye transfer agents are materials that complex with dye in solution and therefore prevent the transfer of dye between clothing during the laundering cycle. Current commercially available anti-dye transfer agents are based on homopolymers or statistical co-polymers that contain poly(N-vinyl pyrrolidone). These polymers are covered by extensive patent protection from various companies and have also been shown to precipitate from solution at high dye concentrations. Novel free-radical polymerisation techniques have been used here to prepare controlled architecture polymers based on poly-2-(dimethylamino)ethyl methacrylate that contain hydrophilic, anionic and cationic functionality. Free-radical polymerisation has been used to prepare statistical co-polymer species that contain quaternary charge. Atom transfer polymerisation (ATP) has been used to prepare gradient co-polymers and catalytic chain transfer polymerisation has been used to prepare macromonomers as precursors to block co-polymer products. The dye-binding constants of these novel polymers have been determined using an adaptation of the static sorption technique with Direct Red 80 azo-dye in deionised water and in anionic surfactant stock solution. The data from these tests have improved reproducibility compared with previous studies and tests containing anionic surfactant have highlighted the shortcomings of the static sorption model previously used to determine the dye-binding ability of polymers with dye in deionised water. Hydrophilic gradient co-polymers that contain one dye-binding functionality and one water soluble functionality have been found to offer no significant increase in the dye-binding ability of the polymer species in comparison with the equivalent statistical co-polymer species.
Supervisor: Not available Sponsor: Unilever (Firm)
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: QD Chemistry