TY - JOUR
T1 - Effects of ozone in surface modification and thermal stability of SEBS block copolymers
AU - Peinado, Carmen
AU - Corrales, Teresa
AU - Catalina, Fernando
AU - Pedrón, Sara
AU - Santa Quiteria, Valentín Ruiz
AU - Parellada, María Dolores
AU - Barrio, Juan Antonio
AU - Olmos, Dania
AU - González-Benito, Javier
N1 - Funding Information:
The authors would like to thank the Plan Nacional I+D+I (Ministerio de Ciencia e Innovación) for financial support ( PET2006_0806 and MAT2009-09671 ) as well as the Comunidad Autónoma de Madrid for the funding through I+D Program ( S0505/MAT-0227 ).
PY - 2010/6
Y1 - 2010/6
N2 - SEBS block copolymers were treated under mild conditions in an ozone atmosphere, producing very slightly chemically-modified surfaces. The thermal stability was analysed by chemiluminescence and related to morphological changes observed by AFM. The intrinsic thermal stability was diminished by ozone exposure, but the oxidation induction times were delayed which indicates an enhancement of thermal stability under oxidative conditions. Also, chemiluminescence analysis showed the presence of a typical order-disorder transition at temperatures around 120 °C. Two different sets of samples which showed different morphological patterns were imaged by AFM. The effects of micro-domain separation and inter-domain structure on thermal properties are discussed and explained by a coarsening of the internal interface induced by ozone. A detailed 2D Fourier transformed analysis of AFM images allowed us to identify a regular wrinkled nano-pattern induced by uniaxial strain combined with ozone treatment, offering new opportunities in applications ranging from organic electronics to bio-patterning.
AB - SEBS block copolymers were treated under mild conditions in an ozone atmosphere, producing very slightly chemically-modified surfaces. The thermal stability was analysed by chemiluminescence and related to morphological changes observed by AFM. The intrinsic thermal stability was diminished by ozone exposure, but the oxidation induction times were delayed which indicates an enhancement of thermal stability under oxidative conditions. Also, chemiluminescence analysis showed the presence of a typical order-disorder transition at temperatures around 120 °C. Two different sets of samples which showed different morphological patterns were imaged by AFM. The effects of micro-domain separation and inter-domain structure on thermal properties are discussed and explained by a coarsening of the internal interface induced by ozone. A detailed 2D Fourier transformed analysis of AFM images allowed us to identify a regular wrinkled nano-pattern induced by uniaxial strain combined with ozone treatment, offering new opportunities in applications ranging from organic electronics to bio-patterning.
KW - Block copolymers
KW - Chemiluminescence
KW - Degradation
KW - Order-disorder transition
KW - Ozone
KW - Thermoplastic elastomers
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U2 - 10.1016/j.polymdegradstab.2010.03.018
DO - 10.1016/j.polymdegradstab.2010.03.018
M3 - Article
AN - SCOPUS:77953138881
SN - 0141-3910
VL - 95
SP - 975
EP - 986
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
IS - 6
ER -