Copolymers of poly(arylene sulfide sulfone)/poly(ether sulfone): Synthesis,structure, and rheology properties |
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Authors: | Guang‐Ming Yan Quan Hu Gang Zhang Hao‐Hao Ren Jie‐Hong Lu Jie Yang |
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Affiliation: | 1. Institute of Materials Science & Technology, Analytical & Testing Center, Sichuan University, Chengdu 610064, People's Republic of China;2. College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, People's Republic of China;3. State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China |
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Abstract: | In order to overcome the poor flowability of poly(arylene sulfide sulfone) (PASS), we introduced ether bonds into the polymer main chain. A series poly(arylene ether sulfide sulfone) copolymers (PAESS) containing different proportion of ether bonds were synthesized with 4,4′‐dichlorodiphenyl sulfone (DCDPS), sodium sulfide (Na2S·xH2O), and 4,4′‐dihydroxydiphenyl ether (DHDPE). The copolymers were characterized by Fourier transform infrared (FTIR), 1H‐nuclear magnetic resonance (NMR), differential scanning calorimetry, dynamic mechanical analysis (DMA), and rheometer. The results of FTIR and 1H‐NMR indicate the copolymers are synthesized successfully. PAESS were found to have excellent thermal properties with glass transition temperature (Tg) of 175.7–219.1 °C and 5% weight lost temperature were all above 420 °C. The tensile and DMA test indicates that these resultant copolymers have good mechanical properties with tensile strength of 60 MPa and storage modulus of 1.5 GPa. From the results of rheology properties testing, we found that the melt stability and melt flowability of PASS were improved distinctly from 25,470 Pa s down to 355 Pa s with the incorporation of ether bonds. That will be quite beneficial to the processing of PASS, especially for the thermoforming of precision products. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135, 46534. |
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Keywords: | copolymers structure– property relationships thermoplastics viscosity and viscoelasticity |
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