Doctoral Dissertations

Keywords and Phrases

Coating; Colloidal unimolecular plymer; Epoxy crosslinker; Freeze thaw; Wet edge; Film studies

Abstract

"Colloidal unimolecular polymer (CUP) particles were prepared by the process of water reduction on copolymers containing hydrophobic and hydrophilic monomers at definite ratio using free radical polymerization. The CUPs are formed by the effect of hydrophilic /hydrophobic interactions of the polymer with a change in the solvent environment around them. Once formed these colloidal particles are thermodynamically stable with collapsed hydrophobic groups forming a spheroidal core and hydrophilic charges on the surface stabilizing the particle by the charge repulsion. CUPs contain only the charged CUP particles, water and counterions with all the functionality on the surface for further chemistry. CUP suspension with amine functional groups on the surface can react with epoxy groups and therefore can be used as a crosslinker for 2K epoxy coating. The cured films had comparable properties with commercial amine crosslinker at reduced VOCs.

New regulations which reduce the level of volatile organic compounds (VOC) for architectural latex coatings usually necessitate a sacrifice in performance. The use of glycol has been shown to aid in both freeze thaw and wet edge retention. Loss of this VOC will therefore compromise both. With small particle size, CUPs offer a large amount of surface area with the large amount of non-freezable surface water. The presence of non-freezing surface water make CUPs a candidate as an additive for the wet edge retention and freeze thaw stabilizer for architectural paints. The use of CUP as wet edge retention additive and freeze thaw stabilizer is good alternative for the glycols used in paints and therefore lowers the VOC of architectural latex paints"--Abstract, page iv.

Advisor(s)

Van-De-Mark, Michael R.

Committee Member(s)

Schuman, Thomas P.
Leventis, Nicholas
Winiarz, Jeffrey G.
Myers, John

Department(s)

Chemistry

Degree Name

Ph. D. in Chemistry

Sponsor(s)

Missouri University of Science and Technology. Coatings Institute
Missouri University of Science and Technology. Department of Chemistry

Publisher

Missouri University of Science and Technology

Publication Date

Fall 2015

Journal article titles appearing in thesis/dissertation

  • Synthesis of amine functional colloidal unimolecular polymer (CUP) particles and their use as cross-linker for epoxy coating
  • Synthesis of ethyl acrylate - acrylic acid colloidal unimolecular polymer (CUP) particles and their use as freeze thaw stabilizer and wet edge retention additive in latex paint

Pagination

xii, 88 pages

Note about bibliography

Includes bibliographic references.

Rights

© 2015 Sagar Vijay Gade, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Subject Headings

Polymer colloids -- TestingUnimolecular reactionsSurface tension -- MeasurementPolymers -- RheologyCoatings

Thesis Number

T 10823

Electronic OCLC #

936207123

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