A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Thermal and X-ray powder diffraction studies of aliphatic polyester dendrimers (2004)
Ropponen, J., Tuuttila, T., Lahtinen, M., Nummelin, S., & Rissanen, K. (2004). Thermal and X-ray powder diffraction studies of aliphatic polyester dendrimers. Journal of Polymer Science: Part A: Polymer Chemistry, 42(22), 5574-5586. https://doi.org/10.1002/pola.20367
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Ropponen, Jarmo; Tuuttila, Tero; Lahtinen, Manu; Nummelin, Sami; Rissanen, Kari
Lehti tai sarja: Journal of Polymer Science: Part A: Polymer Chemistry
Julkaisuvuosi: 2004
Volyymi: 42
Lehden numero: 22
Artikkelin sivunumerot: 5574-5586
Kustantaja: Wiley
Julkaisumaa: Yhdysvallat (USA)
Julkaisun kieli: englanti
DOI: https://doi.org/10.1002/pola.20367
Julkaisun avoin saatavuus: Ei avoin
Julkaisukanavan avoin saatavuus:
Tiivistelmä
The syntheses and thermal and X-ray powder diffraction analyses of three sets of aliphatic polyester dendrimers based on 2,2-bis(hydroxymethyl)propionic acid as a repeating unit and 2,2-dimethyl-1,3-propanediol, 1,5-pentanediol, and 1,1,1-tris(hydroxymethyl)ethane as core molecules are reported. These dendritic polyesters were prepared in high yields with the divergent method. The thermal properties of these biodendrimers were evaluated with thermogravimetric analysis and differential scanning calorimetry. The thermal decomposition of the compounds occurred around 250 °C for the hydroxyl-ended dendrimers and around 150 °C for the acetonide-protected dendrimers. In addition, the crystallinity of the lower generation dendrimers was evaluated with X-ray powder diffraction. The highest crystallinity and the highest melting points were observed for the first-generation dendritic compounds. The higher generation dendrimers showed weaker melting transitions during the first heating scan. Only the glass-transition temperatures were observed in subsequent heating scans.
Vapaat asiasanat: dendrimeerit; alifaattiset polyesterit; differentiaalinen pyyhkäisykalorimetria; termogravimetria
Liittyvät organisaatiot
OKM-raportointi: Kyllä
Alustava JUFO-taso: Not rated
