5 Hyperbranching
With the work by Holger Frey and Rolf Mu ¨hlhaupt on the synthesis of hyperbranched
polyglycerols, a renascence of interest in hyperbranched samples emerged. The
comparatively easy preparation and the many possibilities for modifying the
hyperbranched samples caused a virtual explosion of activity worldwide. Chemical
analysis of the modified hyperbranched samples often only allowed an intuitive
interpretation. A more detailed answer was found by the combination of chemical
synthesis in combination with static and dynamic light scattering and the
corresponding branching theory [18].
6 Ongoing Work
Despite the retirement of WB, his work is continued in cooperation with groups in
Germany and other countries in Europe. The study of polysaccharides has a long
tradition at the Freiburg Institute and was continued by studies in close and fruitful
cooperation with the Professores Mariella Dentini and Tommasina Coviello at the
University di Roma “La Sapienca” in Italy [21–23]. The enzymatically synthesized
structure of biopolymers still remains largely ignored by synthetic chemists. Yet
this type of research has a high impact on applications in oil drilling and nutrition
technology.
References
1. Burchard W, Husemann E (1961) Makromol Chem 44–46:355
2. Kajiwara K, Burchard W, Gordon M (1970) Br Polym J 2:110
3. Burchard W (1972) Macromolecules 5:604
4. Strauffer D (1985) Introduction to percolation theory. Taylor & Francis, London
5. Eschwey H, Burchard W (1975) J Polym Sci 53:1
6. Bauer J, Lang P, Burchard W, Baur MW (1991) Macromolecules 24:2634
7. Bauer J, Burchard W (1993) Macromolecules 26:3103
8. Trappe V, Bauer J, Weissmu ¨ller M, Burchard W (1997) Macromolecules 30:2365
9. Merkle G, Burchard W (1996a) Macromolecules 29:3524
10. Merkle G, Burchard W (1996b) Macromolecules 29:734
11. Galinsky G, Burchard W (1995) Macromolecules 28:2363
12. Galinsky G, Burchard W (1996) Macromolecules 29:1498
13. Galinsky G, Burchard W (1997) Macromolecules 30:4445
14. Galinsky G, Burchard W (1997) Macromolecules 30:6966
15. Weissmu ¨ller M, Burchard W (1997) Polym Int 33:380
16. Burchard W (1983) Adv Polym Sci 48:4983
17. Burchard W (1999) Adv Polym Sci 143:113
18. Burchard W (2004) Macromolecules 37:3005
19. Burchard W (2012) Macromolecules 45:3177
The Years After the Retirement of Hermann Staudinger: Research on Solution. . .
153
With the work by Holger Frey and Rolf Mu ¨hlhaupt on the synthesis of hyperbranched
polyglycerols, a renascence of interest in hyperbranched samples emerged. The
comparatively easy preparation and the many possibilities for modifying the
hyperbranched samples caused a virtual explosion of activity worldwide. Chemical
analysis of the modified hyperbranched samples often only allowed an intuitive
interpretation. A more detailed answer was found by the combination of chemical
synthesis in combination with static and dynamic light scattering and the
corresponding branching theory [18].
6 Ongoing Work
Despite the retirement of WB, his work is continued in cooperation with groups in
Germany and other countries in Europe. The study of polysaccharides has a long
tradition at the Freiburg Institute and was continued by studies in close and fruitful
cooperation with the Professores Mariella Dentini and Tommasina Coviello at the
University di Roma “La Sapienca” in Italy [21–23]. The enzymatically synthesized
structure of biopolymers still remains largely ignored by synthetic chemists. Yet
this type of research has a high impact on applications in oil drilling and nutrition
technology.
References
1. Burchard W, Husemann E (1961) Makromol Chem 44–46:355
2. Kajiwara K, Burchard W, Gordon M (1970) Br Polym J 2:110
3. Burchard W (1972) Macromolecules 5:604
4. Strauffer D (1985) Introduction to percolation theory. Taylor & Francis, London
5. Eschwey H, Burchard W (1975) J Polym Sci 53:1
6. Bauer J, Lang P, Burchard W, Baur MW (1991) Macromolecules 24:2634
7. Bauer J, Burchard W (1993) Macromolecules 26:3103
8. Trappe V, Bauer J, Weissmu ¨ller M, Burchard W (1997) Macromolecules 30:2365
9. Merkle G, Burchard W (1996a) Macromolecules 29:3524
10. Merkle G, Burchard W (1996b) Macromolecules 29:734
11. Galinsky G, Burchard W (1995) Macromolecules 28:2363
12. Galinsky G, Burchard W (1996) Macromolecules 29:1498
13. Galinsky G, Burchard W (1997) Macromolecules 30:4445
14. Galinsky G, Burchard W (1997) Macromolecules 30:6966
15. Weissmu ¨ller M, Burchard W (1997) Polym Int 33:380
16. Burchard W (1983) Adv Polym Sci 48:4983
17. Burchard W (1999) Adv Polym Sci 143:113
18. Burchard W (2004) Macromolecules 37:3005
19. Burchard W (2012) Macromolecules 45:3177
The Years After the Retirement of Hermann Staudinger: Research on Solution. . .
153