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The Effect of Hydrophilic Monomer in Core-shell Latex

Zhong, Weijie
http://rave.ohiolink.edu/etdc/view?acc_num=akron1436453067

Abstract Details

2015, Master of Science in Polymer Engineering, University of Akron, Polymer Engineering.
In this study, the effect of 2-hydroxyethyl methacrylate (HEMA) in methyl methacrylate (MMA) and butyl acrylate (BA) core-shell latex was investigated. The main purpose was to check the secondary nucleation of HEMA. Kinetics during polymerization, glass transition temperature, and physical properties such as surface tension, pH and conductivity were also studied. The core (seed) was composed of BA and MMA and the shell was comprised of BA, MMA and HEMA. Five series, twenty five syntheses, containing 0-40 mol% HEMA in monomer composition with three different BA/MMA molar ratios (1:1, 2:1, 1:2) and pure BA, pure MMA respectively, were synthesized and compared. The seeds were synthesized through batch emulsion polymerization. The core-shell latexes were synthesized through semi-batch emulsion polymerization. Average particle sizes of the latexes were determined by dynamic light scattering (DLS). However, due to the blindness of DLS to small particles, transmission electron microscope (TEM) was used to verify the particle size and detect small particles. Kinetic data was measured gravimetrically. Differential scanning calorimeter (DSC) was used to obtain the glass transition temperature. Conductivities and pHs were obtained from OAKTON pH/conductivity meter. Surface tension was measured by DuNouy Tensionmeter.
Mark Soucek (Advisor)
Yu Zhu (Committee Member)
Younjin Min (Committee Member)
64 p.
Polymer Chemistry; Polymers

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Citations

  • Zhong, W. (2015). The Effect of Hydrophilic Monomer in Core-shell Latex [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1436453067

    APA Style (7th edition)

  • Zhong, Weijie. The Effect of Hydrophilic Monomer in Core-shell Latex. 2015. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1436453067.

    MLA Style (8th edition)

  • Zhong, Weijie. "The Effect of Hydrophilic Monomer in Core-shell Latex." Master's thesis, University of Akron, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1436453067

    Chicago Manual of Style (17th edition)

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© 2015, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.