文章摘要
王梓民,石海信,王爱荣,王锋,何强.冷冻交联制备ZM-CSt-PVA复合凝胶及吸附Cu2+ 性能[J].精细化工,2019,36(6):
冷冻交联制备ZM-CSt-PVA复合凝胶及吸附Cu2+ 性能
Preparation of ZM-CSt-PVA composite gel though freezing cross-linking method and adsorption performance of Cu2+
投稿时间:2018-10-22  修订日期:2019-02-17
DOI:
中文关键词: 互穿网络凝胶  反聚电解质效应  冷冻交联法  两性离子  聚乙烯醇  吸附  淀粉
英文关键词: interpenetrating network gel  anti-polyelectrolyte effect  frozen cross-linking method  zwitterion  polyvinyl alcohol  adsorption  starch
基金项目:广西高校高水平创新团队及卓越学者计划(桂教人[2016]42号)、广西教育厅高校中青年教师基础能力提升项目(2018KY0618)、广西高校北部湾石油天然气资源有效利用重点实验室基金(2017KLOG13)
作者单位E-mail
王梓民 钦州学院 wangzimin0817@163.com 
石海信 钦州学院 shihaixin2006@163.com 
王爱荣 钦州学院  
王锋 钦州学院  
何强 广西大学  
摘要点击次数: 159
全文下载次数: 0
中文摘要:
      以两性离子单体(ZM)、木薯淀粉(CSt)和聚乙烯醇(PVA )为主要原料,采用一锅法,通过冷冻交联制备ZM接枝共聚CSt-PVA互穿网络复合凝胶(ZPG2)。使用红外光谱仪(FTIR)、热重分析仪(TGA)、偏光显微镜(POM)、扫描电镜-能谱仪(SEM-EDS)对ZPG2进行表征,评价了ZPG2对Cu2+的静态吸附效果。结果表明:300 ℃以下,ZPG2的热稳定性良好;ZM的存在可产生反聚电解质效应和化学配位效应,显著提高凝胶吸附能力;在吸附温度25 ℃、ZPG2用量0.1g、Cu2+ 质量浓度[已按审稿意见2.3,全文统一修改为质量浓度]2×103 mg/L、溶液体积100mL时,饱和吸附量为199 mg/g;吸附过程符合Langmuir等温吸附模型和准二级动力学模型。
英文摘要:
      Using zwitterionic monomer (ZM), cassava starch (CSt) and polyvinyl alcohol (PVA) as main raw materials,a ZM graft copolymerized CSt-PVA interpenetrating network composite gel (ZPG2) was prepared through a freezing cross-linking method with a one-pot process. ZPG2 was characterized by Fourier infrared spectrometer(FTIR), Thermogravimetric analyzer(TGA), Polarized light microscopy (POM), Scanning electron microscope and Energy dispersive spectrometer (SEM-EDS). Static adsorption effects of ZPG2 on Cu2+ was evaluated. The results showed that ZPG2 had good thermal stability below 300 ℃. The presence of ZM produced an anti-polyelectrolyte effect and a chemical coordination effect, which could increase gel adsorption capacity significantly. Saturated adsorption amount could be as much as 199 mg/g when adsorption temperature was 25℃, ZPG2 dosage was 0.1g, Cu2+ concentration was 2×103 mg/L, and the solution volume was 100mL. The data of adsorption was in accord with Langmuir isotherm adsorption model and pseudo-second-order kinetic model.
  查看/发表评论  下载PDF阅读器
关闭