Typescript. Includes bibliographical references (leaves 101-105).

Thesis (Ph. D.)--Drexel University, 2006. / Includes abstract and vita. Includes bibliographical references (leaves 144-149).

Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2006. / Includes bibliographical references (leaves 160-175). Also available in electronic version.

Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2006. / Includes bibliographical references (leaves 121-134). Also available in electronic version.

Thesis (M.S.)--Oregon State University, 2007. / Printout. Includes bibliographical references (leaves 51-52). Also available on the World Wide Web.

Dissertation (Ph. D.)--University of Akron, Dept. of Polymer Engineering, 2006. / "May, 2006." Title from electronic dissertation title page (viewed 10/11/2006) Advisor, James L. White; Committee members, Avraam I. Isayev, Thein Kyu, Darrell H. Reneker, Shing-Chung "Josh" Wong; Department Chair, Sadhan C. Jana; Dean of the College, Frank N. Kelley; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.

No description available.

This research study describes the gas separation performance of different sets of Polyethyleneoxide-block-Polysulfone-block-Polyethyleneoxide/poly(ether-block-amide) (PEO-b-PSU-b-PEO/Pebax) composite membranes for CO2 separation from N2 and CH4. Gas permeation properties of the membranes prepared were studied at ambient temperature (21oC) and 8bar. The dependence of gas flux and selectivity on pressure was explored for different pressures from 2.5 bar up to 19 bar also at ambient temperature. Pebax/PAN composite membranes have a range of CO2 permeance of 4467±274 GPU, 365±64 GPU for CH4 and 152±17 GPU for N2 with CO2/N2 and CO2/CH4selectivities ranges of 30 and 13 respectively. Improved CO2/N2 and CO2/CH4 selectivities coupled with flux reduction were obtained from the introduction of PEO-b-PSU-b-PEO films on Pebax/PAN composite membranes. The gas flux reduced to about one-tenth of Pebax/PAN membrane’s while the selectivities obtained for all the PEO-b-PSU-b- PEO/Pebax/PAN membrane range from 33 to 60 for CO2/N2 and 17 to 33 for CO2/CH4 as the thickness of PEO-b-PSU-b-PEO top layer increases.

No description available.

The effects caused by a variation of the key parameters involved in a proprietary process for the production of microporous polyethylene were investigated. The process involved the treating of a polyethylene film with two proprietary solutions at specific temperatures and in some cases required stretching of the material in the solutions. Specialized equipment was developed to implement the process and determine the conditions under which porous material was produced. The effects of changing these process conditions on the porous nature of the material produced was then determined. lt was determined that for the particular polyethylene film chosen for the investigation, the most uniform porous material resulted when the film was treated with the two proprietary solutions without the use of stretching. The conditions in the first solution were found to be the most important in determining the nature of the material produced. Pore size and distribution were not significantly altered in the variation of the parameters investigated. The material produced had an average pore size of 0.17 micron and a pore density of 0.9 x 10⁹ pores/cm2. The yield point of this material was found to range from 610 - 840 psl (4.2 - 5.8 MPa). / Master of Science / incomplete_metadata