Journal
CARBOHYDRATE POLYMERS
Volume 75, Issue 4, Pages 688-693Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2008.09.009
Keywords
Amphoteric; Hydrogel; Cationic starch; Semi-interpenetrating networks; Staining
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Funding
- Program for New Century Excellent Talents in University [NCET-04-0987]
- Natural Science Foundation of China [20506020]
- Scientific Research Program of the Higher Education Institution of Xinjiang [XJEDU2004S05]
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A series of semi-interpenetrating polymer network (semi-IPN) materials were prepared by blending polymerization of acrylic acid (AA) in cationic starch (CS) and poly(methacryloyloxyethyl trimethylammonium chloride) (PDMC) solution. The crosslinker concentration, the feed ratio of the CS-g-AA to PDMC was discussed in term of the swelling capacity, and hydrogel properties were evaluated by network parameters M., morphological and compressive load tests. The semi-IPN hydrogels were also characterized by FT-IR spectroscopy to confirm the interactions between CS-g-AA and PDMC. Electron microscopy involved to staining of the anionic phases using CsF showed a transition from two-phase to compatible structure with the increasing content: of PDMC, and further confirmed that the semi-IPN structure in hydrogels along with DSC. The resultant semi-IPN hydrogels were found to possess appreciable compatibility, good swellability and mechanical strength. (C) 2008 Elsevier Ltd. All rights reserved.
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