Segmental motion of surface-bound swollen poly(methyl acrylate)-d

Author

Minghua Liang

Abstract

"Poly (methyl acrylate)-d_a (PMA-d_a) was prepared and adsorbed on silica then swollen with toluene and carbon tetrachloride. Comparisons of deuterium NMR spin-lattice relaxation time, T₁, and spin-spin relaxation time, T₂, for the adsorbed polymer at different temperatures were made to obtain information about the backbone motion of the surface-bound polymer. The results suggest that the local fast motions may be similar to those in the corresponding solution, but the longer-range molecular motions were more restricted than those in solution. The log-normal distribution yielded mean correlation times which were 4-10 times slower for the surface-bound species. The Hall-Helfand (HH) model with two correlation times yielded slow correlation times more than an order magnitude slower for the surface species"-- Abstract, p. iv

Advisor(s)

Blum, Frank D.

Committee Member(s)

Whitefield, Philip D.
Morosoff, Nicholas C.

Department(s)

Chemistry

Degree Name

M.S. in Chemistry

Publisher

University of Missouri--Rolla

Publication Date

Fall 1996

Pagination

x, 88 pages

Note about bibliography

Includes bibliographical references (pages 83-87)

Rights

© 1996 Minghua Liang, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Thesis Number

T 7223

Print OCLC #

36478555

Recommended Citation

Liang, Minghua, "Segmental motion of surface-bound swollen poly(methyl acrylate)-d" (1996). Masters Theses. 1591.
https://scholarsmine.mst.edu/masters_theses/1591