Chain stiffness of a high molecular weight polyguanidine prepared by living polymerization

Macromolecules

Volumn 31, Issue 9, 1998, Pages 3151-3154

  Nieh, Mu Ping ^a   Goodwin, Andrew A ^a   Stewart, Jennifer R ^a   Novak, Bruce M ^a   Hoagland, Dave A ^a  

^a UNIVERSITY OF MASSACHUSETTS   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

LIGHT SCATTERING; MOLECULAR STRUCTURE; MOLECULAR WEIGHT DISTRIBUTION; POLYMERIZATION; STIFFNESS;

BENOIT-DOTY FORMULA; POLYGUANIDINE;

BIOPOLYMERS;

EID: 0032485754     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma9718006     Document Type: Article

References (22)

1. Yamakawa, H.; Fujii, M. Macromolecules 1974, 7, 128.
2. Record, M. T., Jr.; Woodbury, C. P.; Inman R. B. Biopolymers 1975, 14, 393.
3. Yanaki, T.; Norisuye, T.; Fujita, H. Macromolecules 1980, 13, 1462.
4. Kashiwagi, Y.; Norisuye, T.; Fujita, H. Macromolecules 1981, 14, 1462.
5. Sato, T.; Norisuye, T.; Fujita, H. Macromolecules 1984, 17, 2696.
6. Deming, T. J.; Novak, B. M. J. Am. Chem. Soc. 1993, 115, 9101.
7. Patten, T. E.; Novak, B. M. J. Am. Chem. Soc. 1996, 118, 1906.
8. (a) Shibayama, K.; Seidel, S. W.; Novak, B. M. Macromolecules 1997, 30, 3159.
9. (b) Goodwin, A.; Novak, B. M. Macromolecules 1994, 27, 5520.
10. 5-cyclopentadienyl)(dimethylamido)titanium(IV) (II) was used as the catalyst. A typical polymerization procedure follows. Using volumetric glassware in the drybox, a 5.45 mM solution of II was prepared in toluene. A second 1.96 M toluene solution of (R/S)-N-(1-phenylethyl)-N′-methylcarbodiimide (I) was prepared similarly. Using syringes, 50 μL of the catalyst solution was added quickly to an ampule that contained 0.90 mL of the monomer solution and a stir bar. The ampule was sealed and the reaction solution allowed to stir at 30°C over the course of several hours, during which time the solution would become increasingly viscous until the solutions would cease to flow. After complete reaction, the polymer was isolated by precipitation into methanol. Lyophilization from benzene yielded the poly-I as a fluffy white solid.
11. Cotts, P. M.; Swager, T. M.; Zhou, Q. Macromolecules 1996, 29, 7323.
12. Benoit, H.; Doty, P. J. Phys. Chem. 1953, 57, 958.
13. Kratky, O.; Porod, G. Recl. Trav. Chim. 1949, 68, 1106.
14. Tsvetkov, V. N. Rigid-Chain Polymers; Hydrodynamic and Optical Properties in Solution; Consultants Bureau: New York, 1989; pp 19-29.
15. Fujita, H. Polymer Solutions; Elsevier: New York, 1990; pp 139-176.
16. Yamakawa, H.; Stockmayer, W. H. J. Chem. Phys. 1972, 57, 2843.
17. Norisuye, T.; Fujita, H. Polym. J. 1982, 14, 143.
18. Murakami, H.; Norisuye, T.; Fujita, H. Macromolecules 1980, 13, 345.
19. Yamakawa, H.; Fujii, M. Macromolecules 1973, 6, 407.
20. Schmidt, M. Macromolecules 1984, 17, 553.
21. Tsuji, T.; Norisuye, T.; Fujita, H. Macromolecules 1975, 7, 558.
22. Shibayama, K.; Seidel, S. W.; Novak, B. M. Macromolecules 1997, 30, 3159.