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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 50, Number 6
JKCSEZ 50(6)
December 20, 2006

Title	Thixotropic Properties of Polyacrylamide Hydrogels with Various Synthetic Conditions 합성조건에 따른 Polyacrylamide 수화 겔의 흐름변성 성질
Author	Nam Jeong Kim* 김남정*
Keywords	유변성질, 비 뉴톤 유동식, 흐름변성, Polyacrylamide 수화 겔 , Rheological Properties, Non-newtonian Flow Equation, Thixotropy, Polyacrylamide Hydrogels
Abstract	Polyacrylamide 수화 겔의 유변성질에 있어서 합성 조건과 수화 물 양의 영향이 연구되었다. cone-plate 레오메타를 사용하여 polyacrylamide 수화 겔의 비 뉴톤 유동 곡선을 얻었다. 이렇게 얻은 유동곡선에 유동에 대한 비뉴톤식을 적용하여 유변 파라메타를 계산하여 얻었다. polyacrylamide 수화 겔은 전단속도가 증가함에 따라 구조가 약해지는 흐름변성 현상을 나타낸다. 이들 유동성질은 유동단위의 특성과 유동 분절사이의 상호 관계에 의해서 나타나는 물질적인 성질이다. Influences of synthetic conditions and water content on rheological properties of polyacrylamide hydrogels were studied. The non-Newtonian flow curves of polyacrylamide hydrogels were obtained by using a cone-plate rheometer. The rheological parameters were obtained by applying non-Newtonian equation to the flow curves for polyacrylamide hydrogels. The polyacrylamide hydrogels are shear thinning under increasing shear rate modes which result in thixotropic behavior. These flow properties are controlled by the characteristics of flow units and the interaction among the flow segments.
Page	447 - 0
Full Text	PDF

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