ESR spin-label study of poly(methyl methacrylate) chain segment rotational dynamics in dilute solution

1986 ◽  
Vol 90 (22) ◽  
pp. 6038-6044 ◽  
Author(s):  
J. Pilar ◽  
J. Labsky

1996 ◽  
Vol 28 (8) ◽  
pp. 690-695 ◽  
Author(s):  
Shigetaka Shimada ◽  
Keiichi Kashima




1992 ◽  
Vol 25 (10) ◽  
pp. 2771-2773 ◽  
Author(s):  
Shigetaka Shimada ◽  
Yasuro Hori ◽  
Hisatsugu Kashiwabara


Polymer ◽  
1995 ◽  
Vol 36 (16) ◽  
pp. 3071-3074 ◽  
Author(s):  
G.G. Cameron ◽  
M.Y. Qureshi ◽  
D. Stewart ◽  
R. Buscall ◽  
J. Nemcek


1966 ◽  
Vol 44 (2) ◽  
pp. 153-156 ◽  
Author(s):  
S. Brownstein ◽  
D. M. Wiles

The high resolution proton magnetic resonance spectra of five samples of poly(methyl methacrylate) in chloroform solution have been measured with 100 Mc/s equipment. The widths of the absorption lines arising from the protons of the α-methyl and the methoxyl groups have been compared. The widths are greater when the polymer is predominantly syndiotactic than when it is predominantly isotactic. It is concluded that isotactic samples have the more extended conformation in chloroform solution. An analogy with dilute solution viscosity measurements is outlined in support of this conclusion. Differences between the widths of the lines of the methylene protons in a completely isotactic poly(methyl methacrylate) sample are attributed to long range spin coupling.



1994 ◽  
Vol 27 (15) ◽  
pp. 4259-4262 ◽  
Author(s):  
Takenao Yoshizaki ◽  
Hisao Hayashi ◽  
Hiromi Yamakawa


Sign in / Sign up

Export Citation Format

Share Document