For Libraries For Publication Open Access Downloads About Us Contact Us
Paper Titles
Leaching Properties of Immobilization of HLW into SrTiO3 Ceramics
p.1807
Preliminary Study on the Print-through Standard of Offset Printing
p.1812
Preparation and Properties Studies of Cellulose Super Absorbent Polymer
p.1816
The Research on the Viscoelasticity of Geogrid and Constitutive Model of Reinforced Soil
p.1820
Preparation and Characterization of pH Sensitive Microgels with Semi-Interpenetrating Polymer Network Structure
p.1836
Electropolymerization of Dialkoxythiophenes and its Morphologies
p.1840
Technical Process of Silk Degumming and Sericin Extracting
p.1844
Preparation and Properties Evaluation of Tencel/ PET Low Melting Point Fiber Dressing Fabric Coated by UV Cross-Linked Chitosan
p.1848
Preparation and Chiral Resolution Properties of L-Phenylalanine Modified Poly(NIPAAm-Co-AAc) Hydrogels
p.1852

Preparation and Characterization of pH Sensitive Microgels with Semi-Interpenetrating Polymer Network Structure

Article Preview

Abstract:

The microgels with semi-interpenetrating polymer network (semi-IPN) structure based on cross-linked poly(N-isopropylacrylamide) (PNIPAM) and linear poly(acrylic acid) (PAA) were fabricated by one-step precipitation polymerization technique. The chemical composition of the microgels was determined by Fourier transformation infrared spectroscopy and elemental analysis. It was found that the PAA content inside the microgels decreased as the pH value of reaction media increased. The semi-IPN structure of the microgels was confirmed by transmission electron microscopy using uranyl acetate staining method. The pH dependent hydrodynamic diameters obtained by dynamic light scattering revealed that these microgels can reversibly shrink and swell in the pH range from 4.0 to 6.0. The semi-IPN microgels synthesized at pH 3.0 could undergo about 120 times volume change in the pH range.

You might also be interested in these eBooks
Advanced Textile Materials View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 332-334)

Pages:

1836-1839

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.332-334.1836

Citation:

Cite this paper

Online since:

September 2011

Authors:

Chen Zhang, Xiao Yun Liu, Liu Sheng Zha

Keywords:

Microgels, pH Senstitive, Poly(Acrylic Acid), Poly(N-isopropylacrylamide), Semi-Interpenetrating Polymer Network (Semi-IPN)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2011 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] L.S. Zha, B. Banikb and F. Alexis: Soft Mater, 2011

DOI: 10.1039/c0sm01307b

Google Scholar

[2] P. Vaupel, F. Kallinowski and P. Okunieff: Cancer Res. Vol. 49 (1989), p.3759

Google Scholar

[3] K.S. Soppimath, T.M. Aminabhavi, A.M. Dave, S.G. Kumbar and W.E. Rudzinski: Drug Dev. Ind. Pharm. Vol. 28 (2002), p.957

Google Scholar

[4] D. Schmaljohann: Adv. Drug Deliver. Rev. Vol. 58 (2006), p.1655

Google Scholar

[5] Y. Qin and K. Park: Adv. Drug Deliver. Rev. 53 (2001), p.321

Google Scholar

[6] K. McAllister, P. Sazani and M. Adam: J. Am. Chem. Soc. Vol. 124 (2002), p.15198

Google Scholar

[7] P. Bouillot and B. Vincent: Colloid Polym. Sci. Vol. 278 (2000), p.74

Google Scholar

[8] M. Gupta and A.K. Gupta: J. Controlled Release Vol. 99 (2004), p.157

Google Scholar

[9] C.D. Jones and L.A. Lyon: Macromolecules Vol. 33(2000), p.8301

Google Scholar

© 2025 Trans Tech Publications Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For open access content, terms of the Creative Commons licensing CC-BY are applied.
Scientific.Net is a registered trademark of Trans Tech Publications Ltd.