Poly（acrylic acid）/nylon1313 and polystyrene/nylon1313 blends were prepared usin g supercritical CO2 as both the substrate-swelling agent and the monomer/ initiator carrier. The desorption of CO2 from CO2-saturated ...Poly（acrylic acid）/nylon1313 and polystyrene/nylon1313 blends were prepared usin g supercritical CO2 as both the substrate-swelling agent and the monomer/ initiator carrier. The desorption of CO2 from CO2-saturated nylon1313 is li nearly dependent on the logarithm of time. Both IR and SEM data show the existen ce of the PAA or the PS phases within the nylon1313 matrix in the blends. Compar ed to nylon1313, the heat of fusion of CO2-plasticized nylon1313 is greater, and that of the CO2-plasticized PAA/nylon1313 and PS/nylon1313 blends are smaller.展开更多
Thermal evolution behavior of solution cast film of Poly(2,6 dimethyl 1,4 phenylene oxide)(PPO)/polystyrene(PS) blend was investigated by conventional and modulated differential scanning calorimetry. It was found that...Thermal evolution behavior of solution cast film of Poly(2,6 dimethyl 1,4 phenylene oxide)(PPO)/polystyrene(PS) blend was investigated by conventional and modulated differential scanning calorimetry. It was found that the original PPO/PS blend film is actually composed by a crystalline PPO phase and a non crystalline compatible PPO PS phase. The phase segregated structure state(A) will evolve to non crystalline homogenous structure(B) by subsequent thermal treatment. The effect of annealing temperature on the evolution process was discussed.展开更多
文摘Poly（acrylic acid）/nylon1313 and polystyrene/nylon1313 blends were prepared usin g supercritical CO2 as both the substrate-swelling agent and the monomer/ initiator carrier. The desorption of CO2 from CO2-saturated nylon1313 is li nearly dependent on the logarithm of time. Both IR and SEM data show the existen ce of the PAA or the PS phases within the nylon1313 matrix in the blends. Compar ed to nylon1313, the heat of fusion of CO2-plasticized nylon1313 is greater, and that of the CO2-plasticized PAA/nylon1313 and PS/nylon1313 blends are smaller.
文摘Thermal evolution behavior of solution cast film of Poly(2,6 dimethyl 1,4 phenylene oxide)(PPO)/polystyrene(PS) blend was investigated by conventional and modulated differential scanning calorimetry. It was found that the original PPO/PS blend film is actually composed by a crystalline PPO phase and a non crystalline compatible PPO PS phase. The phase segregated structure state(A) will evolve to non crystalline homogenous structure(B) by subsequent thermal treatment. The effect of annealing temperature on the evolution process was discussed.
