聚苯乙烯的氨气等离子处理及其长效亲水改性应用  

Ammonia Plasma Treatment of Polystyrene and Its Long-term Hydrophilic Modification Application

作　　者：马少华 严俊 盛长忠 周泽奇 MA Shao-hua;YAN Jun;SHENG Chang-zhong;ZHOU Ze-qi(Tianjin Key Laboratory of Precision Diagnostic Technology for Invasive Fungal Diseases,Tianjin 300467,China;Dynamiker Bitechnology(Tianjin)Co.,Ltd.,Tianjin 300467,China)

机构地区：[1]天津市侵袭性真菌病精准诊断技术企业重点实验室,天津300467 [2]丹娜(天津)生物科技股份有限公司,天津300467

出　　处：《塑料科技》2022年第12期18-22,共5页Plastics Science and Technology

基　　金：天津市科技计划项目(17YFZCSY00660)。

摘　　要：为了实现聚苯乙烯材料长效亲水改性,利用氨气等离子体对聚苯乙烯材料表面进行可控亲水改性。通过调整功率、处理时间和氨气气体流量等工艺参数,调节聚苯乙烯材料表面亲水改性程度。利用X射线光电子能谱(XPS)和原子力显微镜(AFM)对材料表面化学成分和表面形貌进行分析。监测等离子处理后材料表面接触角以评估亲水改性效果。结果表明:相比气体流量,氨气等离子处理时间和功率对聚苯乙烯材料表面接触角的影响更明显。在功率为400 W,处理时间为120 s,气体流量为200 mL/min条件下,等离子处理后材料表面接触角约(50±1.9)°。等离子处理后材料表面成功引入N元素和O元素,O和N元素原子数比例分别提高至17.27%和12.98%,O/C和N/C含量比分别增至0.25和0.19。等离子处理前后材料表面形貌无明显变化。接触角监测结果表明亲水改性效果至少可维持360 d。氨气等离子处理可有效实现聚苯乙烯材料表面可控亲水改性,且改性效果具有良好的长期稳定性。In order to achieve long-term hydrophilic modification of polystyrene materials, ammonia plasma was used to control the surface of polystyrene materials. The degree of hydrophilic modification of polystyrene material surface was adjusted by adjusting process parameters such as power, treatment time and ammonia gas flow. The surface chemical composition and surface morphology of the material were analyzed by X-ray photoelectron spectroscopy(XPS) and atomic force microscopy(AFM). The surface contact angle of the material after plasma treatment was monitored to evaluate the hydrophilic modification effect. The results show that the effect of ammonia plasma treatment time and power on the surface contact angle of polystyrene material is more obvious than that of gas flow rate. Under the condition of 400 W power, 120 s treatment time and 200 mL/min gas flow rate, the contact angle of the material surface after plasma treatment is about(50±1.9)°. After plasma treatment, N and O elements are successfully introduced on the surface of the material.The atomic ratio of O and N elements increase to 17.27% and 12.98%, respectively, and the O/C and N/C content ratios increase to 0.25 and 0.19, respectively. The surface morphology of the material has no obvious change before and after plasma treatment. The contact angle monitoring results show that the hydrophilic modification effect can be maintained for at least 360 d. Ammonia plasma treatment can effectively realize the surface controllable hydrophilic modification of polystyrene material, and the modification effect has good long-term stability.

关 键 词：聚苯乙烯 氨气等离子 可控润湿性 长效亲水改性 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]