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摘要:
Blends of polyacrylamide—PAM, poly(N-isopropylacrylamide)—PNIPAAm, poly(N-tert-butylacrylamide)—PTBAA, poly(N,N-dimethylacrylamide)—PDMAA and poly(N,N-diethylacrylamide)—PDEAA with poly(ethylene glycol)— PEG were prepared by casting in methanol and water at concentrations of 20 wt%, 40 wt%, 60 wt%, and 80 wt% in PEG. The miscibility of the components was studied by Differential Scanning Calorimetry—DSC. All blend systems are characterized by a single glass transition temperature (Tg), close to the Tg of the amorphous component. The Hoffman Weeks method was used to determine equilibrium melting temperature (Tm) data. The determination of the melt point depression of the blends allowed the calculation of Flory-Huggins interaction parameter (χ12) of the two polymers in the melt, by using the Nishi Wang equation. The interaction parameters, calculated for all the blends, are slightly negative and close to zero, suggesting a partial miscibility between the components.
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篇名 Miscibility Behavior of Polyacrylamides Poly(Ethylene Glycol) Blends: Flory Huggins Interaction Parameter Determined by Thermal Analysis
来源期刊 现代物理(英文) 学科 化学
关键词 POLYACRYLAMIDES Poly(Ethylene Glycol) Polymer BLENDS FLORY-HUGGINS Interaction Parameter Differential Scanning CALORIMETRY
年,卷(期) 2013,(7) 所属期刊栏目
研究方向 页码范围 45-51
页数 7页 分类号 O6
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POLYACRYLAMIDES
Poly(Ethylene
Glycol)
Polymer
BLENDS
FLORY-HUGGINS
Interaction
Parameter
Differential
Scanning
CALORIMETRY
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现代物理(英文)
月刊
2153-1196
武汉市江夏区汤逊湖北路38号光谷总部空间
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1826
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0
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