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Citation: HUANG Zhi-Hong, YAN Fang, ZHANG Li-Ming, ZHONG Jun-Wen. Acrylate Copolymer Hydrosol Modified by Acetylacetone Chelate of Isopropoxy Titanium[J]. Chinese Journal of Applied Chemistry, ;2005, 22(4): 422-426. shu

Acrylate Copolymer Hydrosol Modified by Acetylacetone Chelate of Isopropoxy Titanium

1.
a Polymer Institute, School of Chemistry & Chemical Engineering, Sun Yat-sen University, Guangzhou 510275;
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b Letong Chemical Manufacture Co.Ltd, Zhuhai

Corresponding author: HUANG Zhi-Hong,
Received Date: 9 July 2004
Available Online: 10 October 2004
Fund Project: 珠海市科委基金资助项目(PC200310031) (PC200310031)

Acetylacetone chelate of isopropoxy titanium was used to modify a ternary carboxy copolymer (MBA) and two tetracopolymers with additional hydroxyl and hydroxylamine groups (MBAH and MBAN).The addition of the chelate increased both the hydrosol viscosity and average particle size,and decreased the hydrosol surface tension;the T_g of the film and the activation energy for the thermal decomposition were higher,and the water resistance of the film was improved.The chelate brought the biggest change for MBA hydrosol in average particle size,which increased from 70 nm to 123 nm,and its surface tension decreaced to 25.20 mN/m,and the decomposition activation energy reached 138.3 kJ/mol.The water resistance of MBAN was improved saliently,with a water up-take of less than 1.5%.Thus it is suitable for use as water-based ink.All the three heated hydrosols with the chelate showed a new absorption peak in UV analysis,indicating that a new product was formed in the heating course.DSC results also show that there was an exothermic reaction in heating the chelate/MBA blend.
- acetylacetone titanium chelate,
- acrylate copolymer hydrosol,
- blending
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