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Noncovalent Functionalization of Latex Particles using High Molecular Weight Surfactant for High-Performance Coatings

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dc.contributor.advisorJohn Klier
dc.contributor.authorZheng, Lei
dc.contributor.departmentUniversity of Massachusetts Amherst
dc.contributor.departmentChemical Engineering
dc.date2023-09-23T23:13:56.000
dc.date.accessioned2024-04-26T18:27:19Z
dc.date.available2024-04-26T18:27:19Z
dc.date.submittedMay
dc.date.submitted2019
dc.description.abstractThe expected outcome of this project is to develop a general strategy to functionalize dispersions, by noncovalent adsorption of HMW surfactants, ultimately for applications such as hydrophobic coatings with high hiding power and hardness, improved mechanical properties via pigment-latex interactions, improved substrate adhesion or improved freeze-thaw stability. So far, we have produced poly (methyl methacrylate-co-butyl acrylate) latexes in the presence of HMW surfactants via emulsion polymerization and demonstrated stronger adsorption of HMW surfactants on particle surface than sodium dodecyl sulfate (SDS). In addition, we have developed surfactant-free latexes, poly (methyl methacrylate-co-butyl acrylate-co-methacrylic acid), as models for post functionalization with high molecular weight surfactants. The successful transfer of surfactants onto particle surface from liquid crystals was indicated by the increase in zeta potential and confirmed via chemical shifts variation in 1H NMR spectra. Additionally, the HMW surfactants were used for dispersing hydrophobic inorganic particles, such as hydrophobic carbon black, in aqueous phase, providing an indication of the general applicability and versatility of our approach.
dc.description.degreeMaster of Science (M.S.)
dc.identifier.doihttps://doi.org/10.7275/14209737
dc.identifier.orcidhttps://orcid.org/0000-0003-4704-0424
dc.identifier.urihttps://hdl.handle.net/20.500.14394/33869
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1819&context=masters_theses_2&unstamped=1
dc.source.statuspublished
dc.subjectHigh molecular weight surfactant
dc.subjectemulsion polymerization
dc.subjectpost functionalization
dc.subjectzeta potential
dc.subject1H NMR
dc.subjectComplex Fluids
dc.subjectPolymer Science
dc.titleNoncovalent Functionalization of Latex Particles using High Molecular Weight Surfactant for High-Performance Coatings
dc.typecampusfive
dc.typearticle
dc.typethesis
digcom.contributor.authorisAuthorOfPublication|email:leizheng94@gmail.com|institution:University of Massachusetts Amherst|Zheng, Lei
digcom.identifiermasters_theses_2/813
digcom.identifier.contextkey14209737
digcom.identifier.submissionpathmasters_theses_2/813
dspace.entity.typePublication
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