Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


Master thesis Ruisi 0000.pdf (1.85 MB)

ETD Abstract Container

Abstract Header

A Viscosity Modifier: Oligo(¿-Alanine) End-Functionalized Polypropylene

CHEN, RUISI
http://rave.ohiolink.edu/etdc/view?acc_num=akron1491609493145333

Abstract Details

, Master of Science, University of Akron, Polymer Science.
In geotechnical engineering, drilling fluid is used to aid the drilling of boreholes into the earth. Most drilling muds are thixotropic. This characteristic keeps the cuttings suspended when the mud is not flowing. [1] This presentation discusses an important additive, the viscosity modifier, in drilling fluids, Oligo(ß-alanine) end functionalized amorphous polypropylene. The oligo(ß-alanine) end-functionalized PP was synthesized via Alder-ene reaction, hydrogenation, and coupling of PP and oligo(ß-alanine). The oligo(ß-alanine) with different end groups (n-butyl and methyl) were all synthesized. Oligo(ß-alanine) is the key component to construct my viscosity modifier. Oligo(ß-alanine) have a strong propensity to form flat anti-parallel ß-sheets and the ß-sheets stack to form high aspect ratio fibrils. [2, 3, 4] The oligo(ß-alanine) in the end group of PP can form crystals through hydrogen bonding which showed the property of shear responsive viscosity changing. The oligo(ß-alanine) crystals also have relatively high melting point which exhibited the property of temperature independent viscosity. The oligo(ß-alanine) end-functionalized polypropylene can serve as the rheology modifier in drilling fluids, which is quite environment-friendly and inexpensive in price. Future work will focus on structural characterization of the viscosity modifier.
LI JIA (Advisor)
TOSHIKAZU MIYOSHI (Committee Member)
Polymer Chemistry; Polymers

Recommended Citations

Citations

  • CHEN, R. (2017). A Viscosity Modifier: Oligo(¿-Alanine) End-Functionalized Polypropylene [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1491609493145333

    APA Style (7th edition)

  • CHEN, RUISI. A Viscosity Modifier: Oligo(¿-Alanine) End-Functionalized Polypropylene. 2017. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1491609493145333.

    MLA Style (8th edition)

  • CHEN, RUISI. "A Viscosity Modifier: Oligo(¿-Alanine) End-Functionalized Polypropylene." Master's thesis, University of Akron, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1491609493145333

    Chicago Manual of Style (17th edition)

akron1491609493145333
197
© 2017, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.