Next Article in Journal
Rapid Hydrophilization of Model Polyurethane/Urea (PURPEG) Polymer Scaffolds Using Oxygen Plasma Treatment
Next Article in Special Issue
Mesogenic Polyelectrolyte Gels Absorb Organic Solvents and Liquid Crystalline Molecules
Previous Article in Journal
Density Functional Theory of Polymer Structure and Conformations
Previous Article in Special Issue
Activated Charge-Reversal Polymeric Nano-System: The Promising Strategy in Drug Delivery for Cancer Therapy
Article Menu

Export Article

Open AccessArticle
Polymers 2016, 8(4), 145;

Modification of Spherical Polyelectrolyte Brushes by Layer-by-Layer Self-Assembly as Observed by Small Angle X-ray Scattering

State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
Engineering Research Center of Xinjiang Bingtuan of Materials Chemical Engineering, Shihezi University, Xinjiang 832000, China
Authors to whom correspondence should be addressed.
Academic Editors: Christine Wandrey and Ruth Freitag
Received: 31 January 2016 / Revised: 14 March 2016 / Accepted: 8 April 2016 / Published: 15 April 2016
(This article belongs to the Collection Polyelectrolytes)
Full-Text   |   PDF [4109 KB, uploaded 15 April 2016]   |  


Multilayer modified spherical polyelectrolyte brushes were prepared through alternate deposition of positively charged poly(allylamine hydrochloride) (PAH) and negatively charged poly-l-aspartic acid (PAsp) onto negatively charged spherical poly(acrylic acid) (PAA) brushes (SPBs) on a poly(styrene) core. The charge reversal determined by the zeta potential indicated the success of layer-by-layer (LBL) deposition. The change of the structure during the construction of multilayer modified SPBs was observed by small-angle X-ray scattering (SAXS). SAXS results indicated that some PAH chains were able to penetrate into the PAA brush for the PAA-PAH double-layer modified SPBs whereas part of the PAH moved towards the outer layer when the PAsp layer was loaded to form a PAA-PAH-PAsp triple-layer system. The multilayer modified SPBs were stable upon changing the pH (5 to 9) and ionic strength (1 to 100 mM). The triple-layer modified SPBs were more tolerated to high pH (even at 11) compared to the double-layer ones. SAXS is proved to be a powerful tool for studying the inner structure of multilayer modified SPBs, which can establish guidelines for the a range of potential applications of multilayer modified SPBs. View Full-Text
Keywords: spherical polyelectrolyte brushes; layer-by-layer deposition; small X-ray scattering spherical polyelectrolyte brushes; layer-by-layer deposition; small X-ray scattering

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Tian, Y.; Li, L.; Han, H.; Wang, W.; Wang, Y.; Ye, Z.; Guo, X. Modification of Spherical Polyelectrolyte Brushes by Layer-by-Layer Self-Assembly as Observed by Small Angle X-ray Scattering. Polymers 2016, 8, 145.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top