聚间苯二胺作为Pb^(2+)吸附剂的包埋  

Embedment Study of Poly(m-phenylenediamine) Powders as an Adsorbent of Lead Ions

作　　者：谢素芬[1] 黄美荣[1] 

机构地区：[1]同济大学材料科学与工程学院,上海200092

出　　处：《济南大学学报（自然科学版）》2007年第1期94-94,共1页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金(20274030)

摘　　要：使用聚乙烯醇(PVA)为包埋剂,硼酸(H3BO3)为交联剂将聚间苯二胺粉末包埋成球。着重考察了包埋剂浓度、包埋比、交联时间这3个因素对小球性能的影响。对不同包埋条件进行比较,发现小球综合性能最佳的包埋工艺条件是,PVA质量百分比浓度为8%,包埋比为1∶1,交联时间为24 h,海藻酸钠质量百分比为0.2%。在该条件下小球的损失率为15.1%,对Pb2+的吸附容量达129.1 mg·g-1。在最佳工艺基础上添加少许CaCO3可提高小球对Pb2+的吸附率,高达82.5%,而且也改善了小球的强度。the PmPD powders were entrapped into gels formed by the cross- link reaction of polyvinyl alcohol （PVA） with boric acid （H3BO3）. The concentration of PVA, the mass ratio of PmPD over PVA and the time of cross- link reaction were studied especially. Comparing all the erabedment processes, the optimum of the comprehensive property of spherules as follows： the cross- link time of 24 h, the PmPD over PVA ratio of 1 ： 1, the PVA concentration of 8wt% with the mass loss of 15.1% ,the adsorption capacity of 129. 1 mg·g^-1. The addition of little CaCO3 powder can substantially enhance the property of adsorption to ＂Pb^2 ＋ with high adsorptivity of 82.5 %, the intensity getting better.

关 键 词：聚间苯二胺 包埋 吸附 

分 类 号：TQ317[化学工程—高聚物工业]