MALDI-TOF analysis of the secondary processes occurring during the ring opening polymerization of caprolactone initiated by HEMA

Gallardo, Alberto; Marcos-Fernandez, Angel; Egri, Sinan; Lebron, Rosa; Piskin, PETEK

doi:10.1080/10236660701824290

MALDI-TOF analysis of the secondary processes occurring during the ring opening polymerization of caprolactone initiated by HEMA

Gallardo A., Marcos-Fernandez A., Egri S., Lebron R., Piskin E.

INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION, cilt.13, sa.2, ss.83-94, 2008 (SCI-Expanded, Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 13 Sayı: 2
Basım Tarihi: 2008
Doi Numarası: 10.1080/10236660701824290
Dergi Adı: INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.83-94
Hacettepe Üniversitesi Adresli: Evet

Özet

Short 2-hydroxyethylmethacrylate (HEMA)-oligocaprolactone macromonomers were synthesized at different temperatures from 100 degrees to 190 degrees C by bulk ring opening polymerization using HEMA as initiator and stannous octoate as catalyst. The crude products were analysed by MALDI-TOF and NMR and the influence of the temperature on the reaction was studied. In addition to transesterification (found at temperatures of 130 degrees C and higher), other secondary reactions involving HEMA breakdown were also identified at these temperatures. In these processes, difunctional acrylic compounds may be formed.