| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Stavila, Erythrina
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (1/1 displayed)
Places of action
| Organizations | Location | People |
|---|
article
Lipase-Catalyzed Ring-Opening Copolymerization of ε‑Caprolactone and β‑Lactam
Abstract
<p>The enzymatic ring-opening copolymerization of epsilon-caprolactone (epsilon-CL) and beta-lactam by using Candida antarctica lipase B (CAL-B) as catalyst was studied. Variation of the feed ratios of 25:75, 50:50, and 75:25 of epsilon-CL/beta-lactam was performed. The products contain poly(epsilon-CL-co-beta-lactam) and the homopolymers of poly(epsilon-CL) and poly(beta-lactam). The structure of the copolymers was determined by MALDI-ToF MS. Poly(epsilon-CL-co-beta-lactam) has an alternating and random structure consisting of alternating repeating units with oligo(epsilon-CL) or oligo(beta-lactam). The highest fraction of the alternating copolymers resulted from the reaction with a feed ratio 50:50. The copolymer is a semicrystalline polymer with a T-m at 124 degrees C and T(g)s at -15 and 50 degrees C. Interestingly, the copolymer also demonstrated cold crystallization at 29 and 74 degrees C, after quenching the sample from the melt in liquid nitrogen.</p>