Rapid and quantitative determination of critical micelle concentration by automatic continuous mixing and static light scattering

Paillet, Sabrina; Grassl, Bruno; Desbrières, Jacques

doi:10.1016/j.aca.2009.02.011

Cited by 47 publications

(44 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The band broadening correction was not considered as it did not impact the final results. The refractive index increment (d n /d c ) was determined to be 0.184 ± 0.001, 0.144 ± 0.001, 0.132 ± 0.001, 0.113 ± 0.001, 0.159 ± 0.001, and 0.150 ± 0.001 mL/g for PAM, AM, PAMPSNa, AMPSNa, PDMAAPS, and DMAAPS, respectively, according to a method described in the literature 16, 17. The delay volume, normalization, and RI calibration constant were determined using bovine serum albumin (BSA) 18…”

Section: Methodsmentioning

confidence: 99%

Microwave‐assisted nitroxide‐mediated polymerization for water‐soluble homopolymers and block copolymers synthesis in homogeneous aqueous solution

Rigolini¹,

Grassl²,

Reynaud³

et al. 2010

J. Polym. Sci. A Polym. Chem.

Self Cite

View full text Add to dashboard Cite

We performed a critical reinvestigation of microwave enhancement of nitroxide-mediated polymerization (NMP) of acrylamide (AM) in aqueous media in the dynamic (DYN) mode with a combination of a conventional hydrosoluble radical initiator and a b-phosphonylated nitroxide (SG1). Based on the results of our previous work, a complementary series of polymerization reactions was carried out between 130 and 160 C using only the DYN mode to ascertain the existence of a microwave effect. The polymer conversion (p), molar masses, polydispersity index, and viscosity of each sample were measured. The temperature was monitored inside and outside of the vessel using an optical fiber sensor and an IR sensor, respectively. Microwave enhancement of polymerization, temperature control and viscosity of the reaction media were closely related. We also furthered the field of hydrophilic AB diblock copolymer synthesis using a tertiary SG1-based macroalkoxyamine and directly synthesized both poly(acrylamide-b-sodium 2-acrylamido-2-methylpropanesulfonate), a neutral-b-anionic diblock copolymer, and poly(acrylamide-b-3-dimethyl(methacrylamidopropyl)ammonium propanesulfonate), a neutral-b-zwitterionic diblock copolymer, in homogeneous aqueous media. V C 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: [5775][5776][5777][5778][5779][5780][5781][5782] 2010

show abstract

Section: Methodsmentioning

confidence: 99%

Microwave‐assisted nitroxide‐mediated polymerization for water‐soluble homopolymers and block copolymers synthesis in homogeneous aqueous solution

Rigolini¹,

Grassl²,

Reynaud³

et al. 2010

J. Polym. Sci. A Polym. Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

“…It was chosen mainly for its high density (974 kg m −3 ) and high viscosity (3.4 Pa s at 20°C). Two well‐known nonionic surfactants were used and compared as follows: Triton X‐405 (HLB = 17.9, CMC in water of 0.159 [wt/wt], product of Sigma‐Adrich) and Triton X‐100 (HLB = 13.5, CMC in water of 0.018 [wt/wt], product of Sigma‐Aldrich) 17, 18. Deionized water, with an electrical conductivity of 18.3 MΩ cm, was filtered through a 0.22‐μm Millipore filter.…”

Section: Methodsmentioning

confidence: 99%

A low‐energy emulsification batch mixer for concentrated oil‐in‐water emulsions

et al. 2010

Self Cite

View full text Add to dashboard Cite

This work shows the formation of a high internal phase ratio oil-in-water (O/W) emulsion using a new type of a two-rod batch mixer. The mixture components have sharply different viscosities [1/3400 for water-in-oil (W/O)], similar densities (1/0.974 for W/O), and an O/W ratio of 91% (wt/wt). The simple design of this mixer leads to a low-energy process (10 6 \ energy density), characterized by low rotational speed and laminar flow. The droplet size distribution during the emulsification was investigated according to different physical and formulation parameters such as stirring time (few minutes \ t \ 1 h), rotational speed (60 \ X \ 120 rpm), surfactant type (Triton X-405 and X-100), concentration (from 1 to 15.9 wt % in water), and salt addition (30 g/L). We show that all studied parameters allow a precise control of the droplet size distribution and the rheology. The resulting emulsions are unimodal and the mean droplet diameter is between 30 lm and 8 lm.

show abstract

“…The differential molar mass distribution was carried out according to the common form: x ( M ) = dW( M )/dlog( M ), where W( M ) is the cumulative distribution (the weight fraction of sample having molar mass less than M ). The refractive index increment, d n /d c , was determined to be, respectively, 0.184 ± 0.001 and 0.144 ± 0.001 mL/g for polyacrylamide and acrylamide according to the method described in the literature 30, 31…”

Section: Methodsmentioning

confidence: 99%

Microwave‐assisted nitroxide‐mediated radical polymerization of acrylamide in aqueous solution

Rigolini

Grassl

Billon

et al. 2009

J. Polym. Sci. A Polym. Chem.

Self Cite

View full text Add to dashboard Cite

Abstract:The present work describes a combination of microwave irradiation as a heating source and water as a solvent for carrying out a living/controlled polymerization of acrylamide.Reasonable results were obtained for a nitroxide-mediated radical polymerization (NMP) with a combination of a conventional hydrosoluble radical initiator and a β-phosphonylated nitroxide. The microwave enhancement of the polymerization was found to depend on the mode of irradiation, i.e., either a DYN mode or an SPS mode. The former mode corresponded to a dynamic control of the temperature by way of a high initial microwave power, and in this case, no specific microwave effect was observed. On the other hand, in the SPS mode, which is a pulsed power mode, the result showed a strong acceleration of the polymerization process (> 50 times) without the loss of the living/controlled polymerization characteristics which is relevant with a re-initiation of the polyacrylamide macroinitiator even after 100% of conversion.

show abstract

Rapid and quantitative determination of critical micelle concentration by automatic continuous mixing and static light scattering

Cited by 47 publications

References 25 publications

Microwave‐assisted nitroxide‐mediated polymerization for water‐soluble homopolymers and block copolymers synthesis in homogeneous aqueous solution

Microwave‐assisted nitroxide‐mediated polymerization for water‐soluble homopolymers and block copolymers synthesis in homogeneous aqueous solution

A low‐energy emulsification batch mixer for concentrated oil‐in‐water emulsions

Microwave‐assisted nitroxide‐mediated radical polymerization of acrylamide in aqueous solution

Contact Info

Product

Resources

About