Formation of ordered microstructures in polyelectrolyte/surfactant systems: linear anionic polyelectrolytes and cetylpyridinium chloride

Kogej, Ksenija; Evmenenko, Guennadi; Theunissen, Elisabeth; Škerjanc, Jože; Berghmans, Hugo; Reynaers, Harry; Bras, Wim

doi:10.1002/1521-3927(20001101)21:17<1226::aid-marc1226>3.0.co;2-n

Cited by 24 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…WAXD patterns of all (DDA) n CAR with the 1:2 relationship of the reciprocal interplanar spacing of two small-angle maxima indicated their lamellar ordering. Similar second order diffraction maximum, suggesting lamellar type of ordering, has been also observed in the small-angle X-ray scattering (SAXS) patterns of κC and ιC complexes with cationic surfactants [23][24][25][26][27].…”

Section: X-ray Diffraction Analysissupporting

confidence: 72%

“…Formation of giant vesicles even at low carrageenan concentrations [7,8] and structural properties of collapsed gels [23] revealed lamellar ordering as an important feature of the dodecylammonium and carrageenan systems. In several papers Reynaers et al [24][25][26][27] have shown that interaction of carrageenan gels with a cationic surfactant cetylpyridinium chloride (CPC) leads to the formation of a lamellar arrangement. Structural investigations of the carageenan and CPC at gelling conditions during reversible heating and cooling cycles have shown that no structural transition are seen in the temperature range between the room temperature and 70 o C [25].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structural and thermal study of mesomorphic dodecylammonium carrageenates

Vinceković

Pustak

Tušek-Božić

et al. 2010

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Structural characteristics and thermal stability of a series of dodecylammonium carrageenates formed by stoichiometric complexation of dodecylammonium chloride and differently charged carrageenans (κ-, ι-and -carrageenan, respectively) were investigated. IR spectral analysis confirmed the electrostatic and hydrogen bond interactions between the dodecylammonium and carrageenan species. X-ray diffraction experiments show increased ordering in the complexes compared to that in the parent carrageenans. Dodecylammonium carrageenates have a layer structure, in which a polar sublayer contains layers of carrageenan chains and a nonpolar sublayer consists of conformationally disordered dodecylammonium chains electrostatically attached to the carrageenan backbone. The major factor that determines the dodecylammonium carrageenate structure is cationic surfactant, while the carrageenans moiety plays a major role in determining thermal properties.

show abstract

Section: X-ray Diffraction Analysissupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Structural and thermal study of mesomorphic dodecylammonium carrageenates

Vinceković

Pustak

Tušek-Božić

et al. 2010

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

show abstract

“…Polyelectrolyte–surfactant (PE–S) complexes have received attention in recent decades in both academic, curiosity-driven research and applications in medicine and technology. − Cooperative binding of surfactant ions to polyelectrolytes leads to the formation of surfactant micelles on the PE chain at the surfactant concentration termed critical aggregation concentration (cac), which is usually much lower than its critical micelle concentration . The entropic gain from the subsequent release of counterions from the polyelectrolyte chain upon cooperative binding of surfactant micelles is the main driving force of PE–S complex formation. ,, …”

Section: Introductionmentioning

confidence: 99%

Evolution of Structure in a Comb Copolymer–Surfactant Coacervate

et al. 2019

View full text Add to dashboard Cite

The interaction between a double-hydrophilic comb copolymer with the polyanionic backbone poly[methacrylic acid-statpoly(ethylene glycol) methyl ether methacrylate] (PMAA−PEGMA) and the cationic surfactant N-dodecylpyridinium chloride (DPCl) was studied in alkaline aqueous solutions by using a combination of light and X-ray scattering techniques, covering 5 orders of magnitude in space (the q vector range from 10 −5 to 5 nm −1 ) and time (from milliseconds to several hours). The results showed that the polyelectrolyte−surfactant (PE−S) complex of PMAA−PEGMA and DPCl forms micrometer-sized coacervate particles containing collapsed PMAA−PEGMA chains with attached and densely packed DPCl micelles. Time-resolved SAXS measurements coupled with a stopped-flow apparatus revealed that the phase separation of the PE−S complex into a coacervate phase occurred in <25 ms after mixing the polyelectrolyte and the surfactant. Thus, microphase separation was faster than the self-assembly of DPCl into densely packed micelles. The terminal stages of polyelectrolyte−surfactant coacervation were dictated by the Ostwald ripening of the droplets in the time range of hours.

show abstract

“…Among different interactions, responsible for binding of surfactants with polymers, the hydrophobic interactions play a key role in the formation of aggregates, and ion pair between oppositely charged moieties could favor such binding, for example, interaction among the ionic surfactant—cationic starch alkyl trimethyl ammonium bromide poly (styrene sulfonate) system. [ 9 ] On the other hand, various factors affect the polymer–surfactant interaction behavior that is affected by numerous features, including surfactant head group type, polymer hydrophobicity, and polar group entrenched in polymer backbone. [ 10 ] The binding of surfactant with polymer at unchanging polymer concentration can be shown by binding‐isotherm.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the complexation behavior of polyethylene oxide with surfactant ternary mixture: Conductometry

Begum

Bibi

et al. 2020

J of Physical Organic Chem

View full text Add to dashboard Cite

In binary system consisting only of the oppositely charged surfactants, a single type of aggregates (mostly probably vesicles) was identified. Upon polymer addition, a shift in aggregation concentration was observed; however, no additional clustering occurred and single inflection point was visible in all property versus concentration plots. The binding behavior in ternary mixtures comprising of poly (ethylene oxide), sodium dodecyl sulfate, and acetyl trimethyl ammonium bromide has been studied by using conductivity. The aggregation and binding phenomena were thermodynamically feasible, unraveled by the negative values of Gibbs free energy. An increased amount of adsorbed poly (ethylene oxide) caused an increase in these values, showing an alteration in interfacial free energy due to release of water molecules from vesicles' surface. The area per molecule calculated for ternary system indicted the existence of compact packing in mixed clusters.

show abstract

Formation of ordered microstructures in polyelectrolyte/surfactant systems: linear anionic polyelectrolytes and cetylpyridinium chloride

Cited by 24 publications

References 22 publications

Structural and thermal study of mesomorphic dodecylammonium carrageenates

Structural and thermal study of mesomorphic dodecylammonium carrageenates

Evolution of Structure in a Comb Copolymer–Surfactant Coacervate

Investigation of the complexation behavior of polyethylene oxide with surfactant ternary mixture: Conductometry

Contact Info

Product

Resources

About