Microstructural characterization of micro- and nanoparticles formed by polymer-surfactant interactions

G. Nizri; S. Magdassi; J. Schmidt; Y. Cohen; Y. Talmon

doi:10.1021/la0364441

Microstructural characterization of micro- and nanoparticles formed by polymer-surfactant interactions

G. Nizri, S. Magdassi, J. Schmidt, Y. Cohen, Y. Talmon^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

98 Scopus citations

Abstract

We have studied the nano- and microparticles formed by complexation of PDAC [poly(diallyldimethylammoniumchloride)] and SDS (sodium dodecyl sulfate). The complexation phenomenon was characterized by light scattering and ζ-potential measurements. The nature of the complexes was revealed by direct-imaging cryogenic temperature transmission electron microscopy (cryo-TEM), showing nanometric details of the complexes formed around the point of neutralization. The images also reveal how those aggregates are solubilized by excess surfactant, first into faceted particles with threadlike micelles attached to their surfaces, prior to complete solubilization, then into lacelike aggregates, and finally into spheroidal micelles. The nanostructure of the complexes strongly suggests they are made of a hexagonal liquid crystalline phase. This was further supported by small-angle X-ray scattering (SAXS).

Original language	English
Pages (from-to)	4380-4385
Number of pages	6
Journal	Langmuir
Volume	20
Issue number	11
DOIs	https://doi.org/10.1021/la0364441
State	Published - 25 May 2004

Access to Document

10.1021/la0364441

Cite this

@article{f0d889a98e7043188e73925f282e5b7f,

title = "Microstructural characterization of micro- and nanoparticles formed by polymer-surfactant interactions",

abstract = "We have studied the nano- and microparticles formed by complexation of PDAC [poly(diallyldimethylammoniumchloride)] and SDS (sodium dodecyl sulfate). The complexation phenomenon was characterized by light scattering and ζ-potential measurements. The nature of the complexes was revealed by direct-imaging cryogenic temperature transmission electron microscopy (cryo-TEM), showing nanometric details of the complexes formed around the point of neutralization. The images also reveal how those aggregates are solubilized by excess surfactant, first into faceted particles with threadlike micelles attached to their surfaces, prior to complete solubilization, then into lacelike aggregates, and finally into spheroidal micelles. The nanostructure of the complexes strongly suggests they are made of a hexagonal liquid crystalline phase. This was further supported by small-angle X-ray scattering (SAXS).",

author = "G. Nizri and S. Magdassi and J. Schmidt and Y. Cohen and Y. Talmon",

year = "2004",

month = may,

day = "25",

doi = "10.1021/la0364441",

language = "אנגלית",

volume = "20",

pages = "4380--4385",

journal = "Langmuir",

issn = "0743-7463",

publisher = "American Chemical Society",

number = "11",

}

TY - JOUR

T1 - Microstructural characterization of micro- and nanoparticles formed by polymer-surfactant interactions

AU - Nizri, G.

AU - Magdassi, S.

AU - Schmidt, J.

AU - Cohen, Y.

AU - Talmon, Y.

PY - 2004/5/25

Y1 - 2004/5/25

N2 - We have studied the nano- and microparticles formed by complexation of PDAC [poly(diallyldimethylammoniumchloride)] and SDS (sodium dodecyl sulfate). The complexation phenomenon was characterized by light scattering and ζ-potential measurements. The nature of the complexes was revealed by direct-imaging cryogenic temperature transmission electron microscopy (cryo-TEM), showing nanometric details of the complexes formed around the point of neutralization. The images also reveal how those aggregates are solubilized by excess surfactant, first into faceted particles with threadlike micelles attached to their surfaces, prior to complete solubilization, then into lacelike aggregates, and finally into spheroidal micelles. The nanostructure of the complexes strongly suggests they are made of a hexagonal liquid crystalline phase. This was further supported by small-angle X-ray scattering (SAXS).

AB - We have studied the nano- and microparticles formed by complexation of PDAC [poly(diallyldimethylammoniumchloride)] and SDS (sodium dodecyl sulfate). The complexation phenomenon was characterized by light scattering and ζ-potential measurements. The nature of the complexes was revealed by direct-imaging cryogenic temperature transmission electron microscopy (cryo-TEM), showing nanometric details of the complexes formed around the point of neutralization. The images also reveal how those aggregates are solubilized by excess surfactant, first into faceted particles with threadlike micelles attached to their surfaces, prior to complete solubilization, then into lacelike aggregates, and finally into spheroidal micelles. The nanostructure of the complexes strongly suggests they are made of a hexagonal liquid crystalline phase. This was further supported by small-angle X-ray scattering (SAXS).

UR - http://www.scopus.com/inward/record.url?scp=2942589085&partnerID=8YFLogxK

U2 - 10.1021/la0364441

DO - 10.1021/la0364441

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:2942589085

SN - 0743-7463

VL - 20

SP - 4380

EP - 4385

JO - Langmuir

JF - Langmuir

IS - 11

ER -

Microstructural characterization of micro- and nanoparticles formed by polymer-surfactant interactions

Abstract

Access to Document

Other files and links

Fingerprint

Cite this