Synthesis and Characterization of Superwater Absorbent Hydrogel from Cassava Starch and Acrylic Acid Blends by the Application of γ-Radiation
Journal Title: Caspian Journal of Applied Sciences Research - Year 2013, Vol 2, Issue 1
Abstract
Synthesis of hydrogel with superwater absorbent (SWA) properties was performed from aqueous solution of cassava starch/acrylic acid blends with radiation processing technology using Co-60 gamma source at room temperature (~27ºC). The preparation conditions, such as irradiation dose (0 to 9kGy) and variation of cassava starch to acrylic acid ratio (1:1 and 1:2) in the feed solution were investigated. FTIR spectroscopy was used to investigate the molecular interaction of cassava starch/acrylic acid SWA. The thermo-gravimetric analysis (TGA) showed that cassava starch/acrylic acid SWA less thermal degradation than pure cassava starch. Biodegradation of SWA was investigated using α-amylase. The prepared SWA was applied as a soil conditioner to observe the growth of Chinese cabbage. The gel strength, gel fraction and swelling behavior were evaluated. With increasing irradiation dose as well as acrylic acid content, the high gel strength (2.15 kg/cm2) and gel fraction (88.5%) increased. The swelling ratio of SWA decreased with increased irradiation dose but it increased with increase in acrylic acid content in the feed solution. The swelling ratio of SWA in NaCl solution was lower than that of obtained in distilled water.
Authors and Affiliations
Nirmal Dafader, Nguyen Duoc, Pham Hong, Doan Binh
Keywords
Related Articles
- EP ID EP109097
- DOI -
- Views 111
- Downloads 0
Population Structure, Growth and Mortality Rates of Jinga Shrimp, Metapenaeus affinis in Fishing Grounds of Hormozgan Province, Iran
Monthly sampling data of Metapenaeus affinis was analyzed to determine the age, growth and mortality rates form January 2010 to February 2011. The asymptotic total Carapace length was estimated to be 35mm for males and 4...
The Effect of Global Advertisement Strategy on Brand Image in Laptop industry in Malaysia
In today’s competitive environment, brand differentiation based on tangible attributes is difficult to achieve. Consumers purchase products/brands not only because of their or quality but more importantly, because...
A Survey of the Effective Factors on the Entrepreneurial Success and Its Impact on the Development of Industrial Section by Use of Fuzzy Dematel
The aim of the study is to rank the effective factors on the success of entrepreneurs, and its impact on the development of the industrial section. Although, various researches have already been conducted on this i...
Environmental Impact on National Security
Global warming is one of the most urgent issues of our day. Fortunately, quick and decisive action on climate policies will bring countries many important benefits and opportunities — including national security. T...
Shear Strength Prediction of Crushed Stone Reinforced Concrete Deep Beams without Stirrups
In this investigation the shear strength behaviour of crushed stone reinforced concrete deep beams without shear reinforcement have been studied, for this purpose eleven reinforced crushed stone concrete deep beam...