响应面法优化超声辅助提取PPS低聚物的工艺研究OA

Polyphenylene sulfide(PPS)oligomers are by-products generated during the industrial production of PPS.These oligomers have significant application potential in the preparation of high-purity PPS and the regulation of composite material interfaces.However,due to the difficulty in efficiently recovering PPS oligomers,they are often treated as industrial solid waste,resulting in resource waste and environmental hazards.This work employed ultrasonic-assisted extraction technology to investigate the recovery process of PPS oligomers,aiming to achieve high-efficiency recycling of these oligomers.Firstly,single-factor experiments were conducted to explore the effects of extraction methods,ultrasonic power,extraction temperature,extraction time,and solid-liquid ratio on the extraction rate of PPS oligomers.Subsequently,the Box-Behnken response surface method was used to further optimize the ultrasonic extraction process parameters of PPS oligomers.The optimal extraction parameters for PPS oligomers were determined as follows:extraction temperature of 40℃,extraction time of 12.5 h,and solid-liquid ratio of 1∶40(g∶ml).Under these conditions,the actual extraction rate of PPS oligomers reached 14.79%,which was consistent with the predicted value of 14.56%by the response surface method.In conclusion,the ultrasonic-assisted extraction process optimized based on the response surface method can significantly improve the extraction rate and efficiency of PPS oligomers.This work provides a new approach for the efficient separation and recovery of PPS oligomers.