Mean-Square Radius of Gyration of Isotactic Oligo- and Poly(methyl methacrylate)s in Dilute Solution

1994 ◽  
Vol 27 (20) ◽  
pp. 5697-5703 ◽  
Author(s):  
Masanao Kamijo ◽  
Nobuo Sawatari ◽  
Toshiki Konishi ◽  
Takenao Yoshizaki ◽  
Hiromi Yamakawa
Keyword(s):  
Methyl Methacrylate ◽  
Radius Of Gyration ◽  
Mean Square ◽  
Dilute Solution ◽  
Poly Methyl Methacrylate

Mean-Square Electric Dipole Moment of Oligo- and Poly(methyl methacrylate)s in Dilute Solution

1997 ◽  
Vol 30 (20) ◽  
pp. 6199-6207 ◽  
Author(s):  
Hitoshi Ando ◽  
Takenao Yoshizaki ◽  
Akihiro Aoki ◽  
Hiromi Yamakawa
Keyword(s):  
Dipole Moment ◽  
Methyl Methacrylate ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Mean Square ◽  
Dilute Solution ◽  
Poly Methyl Methacrylate

Mean-square radius of gyration of oligo- and poly(methyl methacrylate)s in dilute solutions

1990 ◽  
Vol 23 (18) ◽  
pp. 4067-4075 ◽  
Author(s):  
Yoshinori Tamai ◽  
Toshiki Konishi ◽  
Yoshiyuki Einaga ◽  
Motoharu Fujii ◽  
Hiromi Yamakawa
Keyword(s):  
Methyl Methacrylate ◽  
Radius Of Gyration ◽  
Mean Square ◽  
Dilute Solutions ◽  
Poly Methyl Methacrylate

Excluded-Volume Effects on the Mean-Square Radius of Gyration and Intrinsic Viscosity of Isotactic Oligo- and Poly(methyl methacrylate)s

1995 ◽  
Vol 28 (4) ◽  
pp. 1095-1102 ◽  
Author(s):  
Masanao Kamijo ◽  
Fumiaki Abe ◽  
Yoshiyuki Einaga ◽  
Hiromi Yamakawa
Keyword(s):  
Methyl Methacrylate ◽  
Intrinsic Viscosity ◽  
Excluded Volume ◽  
Radius Of Gyration ◽  
Mean Square ◽  
Poly Methyl Methacrylate ◽  
Excluded Volume Effects ◽  
The Mean ◽  
Volume Effects

scholarly journals Effect of Side Group on Mean-Square Radius of Gyration of Atactic Poly(methyl methacrylate) Chain

1997 ◽  
Vol 29 (12) ◽  
pp. 1012-1015 ◽  
Author(s):  
Haizhu Ma ◽  
Linxi Zhang
Keyword(s):  
Methyl Methacrylate ◽  
Radius Of Gyration ◽  
Mean Square ◽  
Side Group ◽  
Poly Methyl Methacrylate

Mean-Square Optical Anisotropy of Isotactic Oligo- and Poly(methyl methacrylate)s in Dilute Solution

1995 ◽  
Vol 28 (12) ◽  
pp. 4167-4172 ◽  
Author(s):  
Yoshio Takaeda ◽  
Takenao Yoshizaki ◽  
Hiromi Yamakawa
Keyword(s):  
Methyl Methacrylate ◽  
Optical Anisotropy ◽  
Mean Square ◽  
Dilute Solution ◽  
Poly Methyl Methacrylate

PROTON MAGNETIC RESONANCE LINE WIDTH AS A FUNCTION OF POLYMER TACTICITY

1966 ◽  
Vol 44 (2) ◽  
pp. 153-156 ◽  
Author(s):  
S. Brownstein ◽  
D. M. Wiles
Keyword(s):  
Magnetic Resonance ◽  
Methyl Methacrylate ◽  
Proton Magnetic Resonance ◽  
Chloroform Solution ◽  
Spin Coupling ◽  
Solution Viscosity ◽  
Dilute Solution ◽  
Poly Methyl Methacrylate ◽  
Resonance Line Width ◽  
Polymer Tacticity

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.

Synthesis and Properties of Regular Star Polybutadienes with 32 Arms

1992 ◽  
Vol 65 (2) ◽  
pp. 303-314 ◽  
Author(s):  
L-L. Zhou ◽  
N. Hadjichristidis ◽  
P. M. Toporowski ◽  
J. Roovers
Keyword(s):  
Molecular Weight ◽  
Coupling Agent ◽  
Hard Sphere ◽  
Star Polymers ◽  
Radius Of Gyration ◽  
Linear Polymers ◽  
Solution Properties ◽  
Mean Square ◽  
Dilute Solution ◽  
Dilute Solution Properties

Abstract A dendrimer carbosilane containing 32 Si—Cl bonds in the perimeter has been prepared and has been used as a coupling agent to prepare 32-arm star polybutadienes. The dilute-solution properties 〈RG2〉, A2, [η], and D0 have been measured in one good solvent and in one ¸ -solvent. The dimensions of the 32-arm star polymers are compared with those of linear polymers at constant molecular weight. It is shown that the 32-arm star polybutadiene has the characteristic properties of a hard-sphere molecule in dilute solution. The equivalent hard-sphere radii calculated from A2, D0 and [η] are identical and 1.29 times larger than the root mean-square radius of gyration. The Daoud—Cotton scaling model for stars is also tested.

Scattering Function of Syndiotactic Poly(methyl methacrylate) in Dilute Solution

1994 ◽  
Vol 27 (15) ◽  
pp. 4259-4262 ◽  
Author(s):  
Takenao Yoshizaki ◽  
Hisao Hayashi ◽  
Hiromi Yamakawa
Keyword(s):  
Methyl Methacrylate ◽  
Dilute Solution ◽  
Scattering Function ◽  
Poly Methyl Methacrylate
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