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Citation: GAO Su-Lian, ZHANG Xiu-Zhen. Studies on Compatibility and Thermal Stability of EC/CA Blends[J]. Chinese Journal of Applied Chemistry, ;2005, 22(8): 923-925. shu

Studies on Compatibility and Thermal Stability of EC/CA Blends

GAO Su-Lian ^, ,
ZHANG Xiu-Zhen

1.
School of Chemistry and Chemical Engineering, Anhui University, Hefei 230039

Corresponding author: GAO Su-Lian,
Received Date: 18 October 2004
Available Online: 17 October 2005
Fund Project: 安徽省自然科学基金(00045212)资助项目 (00045212)

Ethyl cellulose (EC)/cellulose acetate (CA) blends were prepared by solution blending.The thermal stability of the blends was observed by TG,and the compatibility of them was also studied by visco-metry,refractive index,DSC and IR.The results show that the refractive index or the trait vicidity of the EC/CA solution is linearly dependent on the mass composition of the blend.At 50 and 0.01 g/mL concentration,EC and CA are almost completely miscible.A single T_g was observed for a series of blends,which was in between the T_g of pure EC and that of pure CA.The decomposition temperature of the EC/CA blend decreased with the increase of EC mass fraction in the blends.These results indicate that there is good compatibility between EC and CA,and the thermal stability of the blends is improved compared to that of pure EC.
- ethyl cellulose,
- cellulose acetate,
- solution blending,
- compatibility
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