Macromolecular Research

  • 제13권4호
  • /
  • Pages.339-343
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  • 2005
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  • 1598-5032(pISSN)
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  • 2092-7673(eISSN)
한국고분자학회 (The Polymer Society of Korea)
권호 표지

Preparation and Swelling Characteristics of Hydrogel from Microbial Poly(${\gamma}-glutamic acid$) by ${\gamma}$-Irradiation

  • Choi, Seong-Hyun (The Institute of Natural Science, Mokwon University) ;
  • Whang, Kyung-Sook (Division of Lifescience, Mokwon University) ;
  • Park, Jong-Soo (Namyang Dairy Products Co., Ltd.) ;
  • Choi, Woo-Young (Department of Agricultural Chemistry, College of Agriculture and Lifesciences, Chungnam National University) ;
  • Yoon, Min-Ho (Department of Agricultural Chemistry, College of Agriculture and Lifesciences, Chungnam National University)
  • 발행 : 2005.08.31
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초록

Microbial hydrogel was prepared by ${\gamma}-irradiation$ of poly(${\gamma}-glutamic acid$) (PGA) which was produced from Bacillus subtilis BS 62 and it's physico-chemical characteristic was examined. The hydrogel, prepared from 10% PGA with the dose of 48 kGy, was swollen up to 1,370 times of specific water content as dry weight basis. The hydrogels obtained above the dose of 48 kGy appeared to have higher compressive strength but lower specific water content. The period to reach a swelling equilibrium for the hydrogel in deionized water at the temperature range of 4 to $45^{\circ}C$ was about 10 h. The swollen hydrogel was shrunk in ionic solutions with the increase of ionic strength, and the rate of shrinkage was greater in calcium chloride solution than in sodium chloride. Specific water content of the hydrogel was quickly decreased at $80^{\circ}C$, showing a thennally hydrodegradable property.

키워드

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