TY - JOUR
T1 - Thermal transitions in α,ω-diamino terminated poly(oxypropylene)-block-poly(oxyethylene)-block-poly(oxypropylene) aqueous solutions and their epoxy networks
AU - Ribelles, Jose Luis Gómez
AU - Sanchez, Manuel Salmerón
AU - De La Osa, Luis Torres
AU - Krakovský, Ivan
N1 - Funding Information:
M.S.S and J.L.G.R acknowledge the support of the Generalitat Valenciana through the GV04A/345 project. Financial support from the Ministry of Education of the Czech Republic (project MSM 11320001) and Grant Agency of the Czech Republic (grant no. 203/03/0600) is greatly acknowledged. The authors appreciate a generous gift of the polymers used in this study, by Huntsman Corporation.
PY - 2005/5/15
Y1 - 2005/5/15
N2 - Thermal transitions in α,ω-diamino terminated poly(oxypropylene)-block-poly(oxyethylene)-block-poly(oxypropylene), POP-POE-POP, aqueous solutions were studied in a broad temperature range from -100 °C to 50 °C. The solutions of different polymer weight fractions (from 0 to 1) were investigated in cooling and heating scans of differential scanning calorimetry. Qualitatively different kinds of thermograms are found that include crystallization and melting of the polymer chains and water molecules, glass transition, eutectic composition and the existence of non-crystallizable water. All these features are explained on the basis of the transitions diagram of the system, that is obtained for the first time for this important block copolymer in such a broad temperature range. The information obtained from the phase diagram is used in a better understanding of the thermal transitions of swollen epoxy networks based on POP-POE-POP at different cross-linking and hydrophobic degrees.
AB - Thermal transitions in α,ω-diamino terminated poly(oxypropylene)-block-poly(oxyethylene)-block-poly(oxypropylene), POP-POE-POP, aqueous solutions were studied in a broad temperature range from -100 °C to 50 °C. The solutions of different polymer weight fractions (from 0 to 1) were investigated in cooling and heating scans of differential scanning calorimetry. Qualitatively different kinds of thermograms are found that include crystallization and melting of the polymer chains and water molecules, glass transition, eutectic composition and the existence of non-crystallizable water. All these features are explained on the basis of the transitions diagram of the system, that is obtained for the first time for this important block copolymer in such a broad temperature range. The information obtained from the phase diagram is used in a better understanding of the thermal transitions of swollen epoxy networks based on POP-POE-POP at different cross-linking and hydrophobic degrees.
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U2 - 10.1016/j.jnoncrysol.2005.02.015
DO - 10.1016/j.jnoncrysol.2005.02.015
M3 - Article
AN - SCOPUS:18244374191
SN - 0022-3093
VL - 351
SP - 1254
EP - 1260
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
IS - 14-15
ER -