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Methoxy Poly (Ethylene Glycol) Methacrylate- Based Copolymers on the Applications of Concrete Admixtures, Mesoporous Materials, and Rheology Modifiers

Tangvijitsakul, Pattarasai
http://orcid.org/0000-0002-7861-805X
http://rave.ohiolink.edu/etdc/view?acc_num=akron1442440564

Abstract Details

2015, Doctor of Philosophy, University of Akron, Polymer Engineering.
Hydrophilic copolymers were prepared and used in different applications including dispersant additives for cement, thin film batteries, and thickener in water-borne latex coating respectively. The copolymers were prepared using methoxy [poly (ethylene glycol) methacrylate] or MPEGMA and methacrylic acid (MAA) by different polymerization techniques e.g. reversible addition-fragmentation chain transfer (RAFT) polymerization, conventional radical polymerization, and esterification process. Different ratios of monomers and different side chain lengths of MPEGMA were utilized in order to investigate those effects of the fluidity of fresh cement/concrete. The effect molecular weight, molecular weight distribution, and the copolymer structures on fluidity of fresh cement/concrete were also studied. In addition, it was found that a new RAFT polycarboxylate terpolymer (containing in-situ defoaming groups) not only able to provide a reasonable cement fluidity over a long period of time, but also able to control the amount of generated bubbles at the same time. This may probably lead to a new candidate admixture for an outdoor concrete structural application that requires freeze-thaw resistance without adding separate defoaming agents. A new series of amphiphilic block copolymers, poly (methoxy poly (ethylene glycol) methacrylate) - block - poly (butyl acrylate) [PMPEGMA – b – PBA] were successfully synthesized via RAFT polymerization and were characterized via Nuclear Magnetic Resonance (NMR) and Gel Permeation Chromatography (GPC). These block copolymers were then used as micelle templates for mesoporous mixed metal oxide materials between cobalt and/or nickel for thin film battery. A new fatty acid-based rheology modifier, poly [methoxy poly (ethylene glycol) methacrylate]-block–poly (oleic acid) [PMPEGMA–b–POA], was also synthesized by RAFT polymerization. The steady-shear properties of a well-characterized conventional latex, thickened with the different concentrations of the resulting fatty acid - based rheology modifier, were measured at constant pH and temperature. Shear thinning behavior in the latex solution with PMPEGMA homopolymer was observed. In addition, hydrophobically modified rheology modifier increased the thickening effect in the latex solution due to the transient intermolecular and intramolecular associations.
Mark Soucek (Advisor)
Kevin Cavicchi (Committee Chair)
Avraam Isayev (Committee Member)
Li Jia (Committee Member)
Chrys Wesdemiotis (Committee Member)
233 p.
Materials Science; Polymer Chemistry; Polymers

Recommended Citations

Citations

  • Tangvijitsakul, P. (2015). Methoxy Poly (Ethylene Glycol) Methacrylate- Based Copolymers on the Applications of Concrete Admixtures, Mesoporous Materials, and Rheology Modifiers [Doctoral dissertation, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1442440564

    APA Style (7th edition)

  • Tangvijitsakul, Pattarasai. Methoxy Poly (Ethylene Glycol) Methacrylate- Based Copolymers on the Applications of Concrete Admixtures, Mesoporous Materials, and Rheology Modifiers. 2015. University of Akron, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1442440564.

    MLA Style (8th edition)

  • Tangvijitsakul, Pattarasai. "Methoxy Poly (Ethylene Glycol) Methacrylate- Based Copolymers on the Applications of Concrete Admixtures, Mesoporous Materials, and Rheology Modifiers." Doctoral dissertation, University of Akron, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1442440564

    Chicago Manual of Style (17th edition)

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This open access ETD is published by University of Akron and OhioLINK.
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