A study on thermal oxidation mechanism of styrene–butadiene–styrene block copolymer (SBS)

Novel elastomer dye-functionalised POSS nanocomposites: Enhanced colourimetric, thermomechanical and thermal properties

“…The decomposition of SBS shows one degradation step at ~454°C. The thermal degradation mechanism of SBS consists of two main processes, namely chain scission and crosslinking [22]. As listed in Table 4, incorporation of functionalised POSS into the SBS matrix increased the temperature at which the maximum rate of degradation occurs (T d ), with nanocomposites containing 1 wt% isobutylPOSS yielding T d values ranging from 455-456°C.…”

“…The behaviour is attributed to the dispersion of POSS within a particular phase of the SBS matrix. The thermal stability of SBS is dependent on the sensitivity of the double bonds within the continuous, butadiene phase [22,25]. When dispersed throughout the rubber phase, POSS imparts added stiffness into the matrix by acting as crosslink points and reducing chain mobility [26,27].…”

Novel elastomer‐dumbbell functionalized POSS composites: Thermomechanical and Morphological Properties

“…The decomposition of SBS shows one degradation step at $ 467 C. The thermal degradation mechanism of SBS consists of two main processes, namely chain scission and crosslinking. 50 As seen in Figure 7(a), incorporation of functionalised POSS into the SBS matrix increased the temperature at which the maximum rate of degradation occurs (T d ), with nanocomposites containing 1Áwt % POSS yielding T d values ranging from 469 to 472 C. T d continued to increase with filler content, reaching a maximum of 495 C in SBS-phPOSS-adichl 20. This behavior is characteristic of the thermal stability of POSS which stems from its silicon-oxygen structure.…”

“…The thermal stability of SBS is dependent on the sensitivity of the double bonds within the continuous, butadiene phase. 50,52 When dispersed throughout the rubber phase, POSS imparts added stiffness into the matrix by acting as crosslink points and reducing chain mobility. 53,54 This provides thermal stability to the phase upon which the thermal degradation mechanism is dependent.…”

Improvement of thermal inertia of styrene–ethylene/butylene–styrene (SEBS) polymers by addition of microencapsulated phase change materials (PCMs)

“…El SEBS se obtiene por hidrogenación de polímeros de SBS; este proceso permite la eliminación de insaturaciones típicas de los componentes de butadieno (los dobles enlaces carbono-carbono están saturados con hidrógeno) y esto tiene un efecto positivo sobre la resistencia a la radiación ambiental, térmica y ultravioleta, manteniendo un comportamiento termoplástico, por lo que el SEBS es útil en aplicaciones en las que el SBS está restringido, debido a su sensibilidad a la degradación. [15,16] Los polímeros de SEBS combinan con éxito propiedades elastoméricas, con los bajos costos de procesamiento típicos de los plásticos básicos. La excelente resistencia al envejecimiento de los polímeros de SEBS es debido a la ausencia de enlaces dobles carbono-carbono.…”