摘要
采用苯乙烯为单体,磷酸钙、聚乙烯醇为分散剂,过氧化苯甲酰为引发剂,通过悬浮聚合制备了含有氧化石墨烯的聚苯乙烯复合微球,氧化石墨烯可向微球中引入水,实现聚苯乙烯微球的微波水基发泡。采用傅里叶红外光谱仪、X射线光电子能谱、扫描电镜等手段对氧化石墨烯、复合微球的结构进行了表征,考察了在没有加入戊烷发泡剂的情况下,氧化石墨烯的含量、微球粒径对微波水基发泡效果的影响。初步检测了微球对植物油的吸附性能,讨论了氧化石墨烯含量、吸附时间对微球吸附性能的影响。结果表明:氧化石墨烯的含量、微球粒径、发泡时间均对发泡倍率有明显的影响,发泡倍率约为2.5倍,且发泡后的复合微球对大豆油的吸附效果可达435%。该工作探索了聚苯乙烯水基发泡新工艺,制得的聚苯乙烯/氧化石墨烯复合微球在生活废水处理、有机污染物的吸附领域具有潜在应用前景。
The polystyrene/graphene oxide microspheres were prepared by suspension polymerization using styrene as monomer,calcium phosphate and polyvinyl alcohol as dispersants,benzoyl peroxide as initiators.The water could be brought into the composite particles by graphene oxide and acted as forming agent with a microwave foaming process.The structure of graphene oxide and composite microspheres was characterized by Fourier infrared spectrometer,X-ray photoelectron spectroscopy and scanning electron microscope,and the effects of graphene oxide content and particle size on the foaming of the composite particles in the water-based foaming process without pentane foaming agent were discussed.The adsorption performance to the soybean oil of the particles was tested and the effects of graphene oxide content and adsorption time were determined.The results showed that the graphene oxide content,particle size and foaming time had significant effects on the foaming ratio and the maximum foaming ratio was about 2.5 times,and the adsorption capacity of the foamed microspheres to soybean oil was up to 430%.The work proposed a new water-based foaming process for polystyrene,the product microspheres could be used in domestic sewage treatment and adsorption of organic pollutants.
作者
黄娟
贾纬民
郝毅杰
郭睿威
姚芳莲
袁才登
HUANG Juan;JIA Wei-min;HAO Yi-jie;GUO Rui-wei;YAO Fang-lian;YUAN Cai-deng(School of Chemical Engineering and Technology,Tianjin University,Tianjin 300350,China;Tianjin University-UCGM Joint Research Center for Graphene Application,Tianjin 300350,China)
出处
《热固性树脂》
CAS
CSCD
北大核心
2021年第1期8-13,18,共7页
Thermosetting Resin
关键词
氧化石墨烯
聚苯乙烯
水基发泡
吸附
graphene oxide
polystyrene
water-based foaming
adsorption
