Journal
COMPOSITES PART B-ENGINEERING
Volume 40, Issue 4, Pages 275-283Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2009.01.001
Keywords
Nano-structures; Hydrogels; Swelling behavior; Physical properties
Funding
- Ministry of Education, Science and Technology of Korea [S108A01003210]
- Korea Industrial Technology Foundation (KOTEF) through the Human Resource Training Project for Regional Innovation
- Korea Evaluation Institute of Industrial Technology (KEIT) [2005-N-CT-HM-E-02-0000] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [핵06A1303] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
In this study, an investigation is carried out on the influence of varying clay contents (25-43%), pH Values (2-11 buffer solutions), heat treatment, temperatures (25-60 degrees C) and ionic strengths (saline solution, 10(-7)-0.1 M) on the water absorbency of polyacrylamide (PAAm)/laponite nanocomposite (NC) hydrogels in the absence of polyelectrolyte. For the influence of pH value on swelling behaviors, a maximum swelling ratio occurs at pH 11. Heat treatment of the hydrogels significantly improved the swelling capacity and created an obvious pH sensitive area (pH 3-4). The swelling capacity of the hydrogels was enhanced by increasing the temperature of the absorbing media. The results of swelling at different ionic strengths also indicate that the ionic strength call considerably weaken the swelling abilities of the NC hydrogels. (C) 2009 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available