Study of structural morphologies of thermoresponsive diblock AB and triblock BAB copolymers (A?=?poly(N-isopropylacrylamide), B?=?polystyrene)
Por:
Rodríguez-Hidalgo M.D.R., Soto-Figueroa C., Vicente L.
Publicada:
1 mar 2018
Resumen:
Structural morphologies of diblock AB and triblock BAB copolymers (A = poly(N-isopropylacrylamide), B = polystyrene) in aqueous environment have been investigated by dissipative particle dynamics (DPD). In triblock copolymers insoluble PS blocks contract while soluble pNIPAM blocks stay at the periphery forming looped chains as corona. As the temperature is increased there is a continuous morphological transition and micelles form ellipsoidal structures with segregated polymer zones. The phase transition of looped pNIPAM chains occurs at lower temperature than for linear chains and within broader temperature range. It is discussed how the chain topology of pNIPAM affects the phase transition. © 2018 Elsevier B.V.
Filiaciones:
Rodríguez-Hidalgo M.D.R.:
Depto de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán, UNAM, Campo 1. Av. 1o de Mayo s/n, Colonia Santa María de Guadalupe, Las Torres, Cuautitlán Izcalli, Edo. Mexico, Mexico
Depto de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán, UNAM, Campo 1. Av. 1o de Mayo s/n, Colonia Santa María de Guadalupe, Las Torres, Cuautitlán Izcalli, Edo. Mexico 54740, Mexico
Soto-Figueroa C.:
Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, 31125 Chihuahua, Chihuahua, Mexico
Vicente L.:
Departamento de Física y Química Teórica, Facultad de Química, Universidad Nacional Autónoma de México, México D.F, Mexico
Departamento de Física y Química Teórica, Facultad de Química, Universidad Nacional Autónoma de México, México D.F, 04510, Mexico
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