| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Study on Compatibility of Butyl Polyacrylate/Hindered Phenol Damping Hybrid System |
| MA Renbo1, HU Huanbo2, SHEN Wanting1, WU Wei1,*
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1 Sino-German Joint Research Center of Advanced Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
2 OECHSLER Plastic Products (Taicang) Co.,Ltd., Suzhou 215400, Jiangsu, China |
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Abstract Small molecules, such as hindered phenols, are prone to self-aggregation and precipitation, which affects their damping properties. In order to study the long-term stability of hybrid systems, the Flory-Huggins interaction parameters χ between poly(butyl acrylate) (PBA) and four kinds of hindered phenols were measured by melting point reduction method and solubility parameter method. The thermodynamic phase diagrams were drawn. The results showed that the χ decreased with the increase of temperature toward melting point, and the system possessed an upper critical temperature (UCST) behavior. The accuracy of the thermodynamic phase diagram was verified by the results of the transmittance test of ultraviolet spectrophotometer and wide-angle X-ray diffraction (WAXRD). The value of χ depended on the intensity of hydrogen bond between polymer and hindered phenol and the molecular structure of hindered phenol. Increasing the degree of hindered phenolic hydroxyl and Van der Waals volume of hindered phenol would increase χ and decrease the stability of the system. Phase diagrams is useful to optimize the type and dosage of hindered phenols in hybrid systems and to predict the phase behavior of hybrid systems.
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Published: 10 August 2023
Online: 2023-08-07
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| Fund:Chinese German Centre for the Promotion of Science via the NSFC and DFG (GZ1448). |
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2023, Vol. 37 
