TY - JOUR

T1 - Effect of the Degree of Quaternization and Molar Mass on the Cloud Point of Poly[2-(dimethylamino)ethyl methacrylate] Aqueous Solutions

T2 - A Systematic Investigation

AU - Yanez-Macias, Roberto

AU - Alvarez-Moises, Isaac

AU - Perevyazko, Igor

AU - Lezov, Alexey

AU - Guerrero-Santos, Ramiro

AU - Schubert, Ulrich S.

AU - Guerrero-Sanchez, Carlos

PY - 2017/5

Y1 - 2017/5

N2 - A systematic investigation to fine-tune the cloud point of thermoresponsive poly[2-(dimethylamino)ethyl methacrylate) (p(DMAEMA)) aqueous solutions in a broad temperature interval is reported. For this research, p(DMAEMA) s of different molar mass are quaternized at distinct degrees with methyl iodide to obtain an expanded library of poly[DMAEMA-co-poly[2-(methacryloyloxy) ethyl] trimethylammonium iodide]s. Turbidity measurements show that depending on the molar mass of p(DMAEMA) and its degree of quaternization, the cloud point of the corresponding aqueous solutions can be adjusted within a rather broad temperature range from 23 to 70 degrees C. The cloud point and dynamics of the aggregation behavior of these polymers in the aqueous medium are also investigated by dynamic the light scattering. Furthermore, it is also found that the relationship between the molar mass and the cloud point of the respective aqueous solutions obeys an Arrhenius-type model.

AB - A systematic investigation to fine-tune the cloud point of thermoresponsive poly[2-(dimethylamino)ethyl methacrylate) (p(DMAEMA)) aqueous solutions in a broad temperature interval is reported. For this research, p(DMAEMA) s of different molar mass are quaternized at distinct degrees with methyl iodide to obtain an expanded library of poly[DMAEMA-co-poly[2-(methacryloyloxy) ethyl] trimethylammonium iodide]s. Turbidity measurements show that depending on the molar mass of p(DMAEMA) and its degree of quaternization, the cloud point of the corresponding aqueous solutions can be adjusted within a rather broad temperature range from 23 to 70 degrees C. The cloud point and dynamics of the aggregation behavior of these polymers in the aqueous medium are also investigated by dynamic the light scattering. Furthermore, it is also found that the relationship between the molar mass and the cloud point of the respective aqueous solutions obeys an Arrhenius-type model.

KW - LCST

KW - PDMAEMA

KW - thermoresponsive polymers

KW - CRITICAL SOLUTION TEMPERATURE

KW - DIBLOCK COPOLYMERS

KW - THERMORESPONSIVE POLYMERS

KW - RESPONSIVE BEHAVIOR

KW - MOLECULAR-WEIGHT

KW - VESICLES

KW - MICELLIZATION

KW - HOMOPOLYMERS

KW - SOLUBILITY

KW - LIBRARIES

U2 - 10.1002/macp.201700065

DO - 10.1002/macp.201700065

M3 - статья

VL - 218

JO - Macromolecular Chemistry and Physics

JF - Macromolecular Chemistry and Physics

SN - 1022-1352

IS - 10

M1 - 1700065

ER -