TY  - JOUR
U1  - Wissenschaftlicher Artikel
A1  - Tsonev, Tsvetomir
A1  - Herzog, Michael
A1  - Nenkova, Sanchi
T1  - Shape memory polyurethanes based on recycled polyvinyl butyral. I. Synthesis and morphology
JF  - Central European Journal of Chemistry
N2  - Shape memory polyurethanes (SMPUs) were synthesized by 4,4′-diphenylmethane diisocyanate (MDI), hexane-1,6-diol (HD), polypropylene glycol (PPG), and recycled polyvinyl butyral (PVB). Dynamic mechanical analysis, differential scanning calorimetry and Fourier transformation infrared attenuated total reflection spectroscopy was used to characterize the poly (vinylbutyral-urethanes). Micro-phase domain separation of hard and soft segments and phase inversion were investigated. Increasing the hard segment content, i.e., average hard segment molecular weight, leads to an increase in the degree of micro-phase separation, hard domain order and crystallinity. The crystalline hard segment structures combined with the elastic nature of soft segment matrix provide enough physical and chemical crosslinks to have shape memory effect.
AB  - Shape memory polyurethanes (SMPUs) were synthesized by 4,4′-diphenylmethane diisocyanate (MDI), hexane-1,6-diol (HD), polypropylene glycol (PPG), and recycled polyvinyl butyral (PVB). Dynamic mechanical analysis, differential scanning calorimetry and Fourier transformation infrared attenuated total reflection spectroscopy was used to characterize the poly (vinylbutyral-urethanes). Micro-phase domain separation of hard and soft segments and phase inversion were investigated. Increasing the hard segment content, i.e., average hard segment molecular weight, leads to an increase in the degree of micro-phase separation, hard domain order and crystallinity. The crystalline hard segment structures combined with the elastic nature of soft segment matrix provide enough physical and chemical crosslinks to have shape memory effect.
Y1  - 2013
SN  - 2391-5420
SS  - 2391-5420
U6  - https://nbn-resolving.org/urn:nbn:de:kobv:526-opus4-9664
UN  - https://nbn-resolving.org/urn:nbn:de:kobv:526-opus4-9664
VL  - 11
IS  - 12
SP  - 2058
EP  - 2065
ER  -