• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >PREPARATION AND CHARACTERISTICS OF POLYMER-BASED LARGE ADSORBENT PARTICLES
【24h】

PREPARATION AND CHARACTERISTICS OF POLYMER-BASED LARGE ADSORBENT PARTICLES

机译：聚合物基大颗粒吸附剂的制备及性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Using polyvinyl alcohol (PVA) crosslinked with glutaric dialdehyde (c-PVA) as matrix and activated carbon (AC) or crosslinked polyacrylic acid (PAA) as the adsorptive constituent, large beads of c-PVA-AC and c-PVA-PAA composites were prepared via the sedimentation polymerization method. In this method, an aqueous solution of PVA, glutaric dialdehyde, and a catalyst for crosslinking (hydrochloric acid), containing activated carbon or the precursors of the crosslinked polyacrylic acid was injected dropwise with a syringe into hot mineral oil !about 80-90 degrees C) located in a cylindrical reactor fit with a stirrer near its bottom. Partial gelation took place during the sedimentation process. This ensured that the particles arrived at the bottom of the column, where they were kept about 30-60 min to complete their polymerization, maintained their individuality without aggregation. The particle size was as large as about 3 mm. The adsorption characteristics of the two types of adsorbents were dependent on their AC or PAA content. Their adsorption capacity for four dyes was investigated. The c-PVA-AC and c-PVA-PAA had, at room temperature, saturation adsorption capacities as large as 84 and 104 mg/g for the basic Chrysoidin dye, and 70 and 72 mg/g for the basic Bismarck brown Y dye. (C) 1996 John Wiley & Sons, Inc. [References: 28]
机译：以戊二醛（c-PVA）交联的聚乙烯醇（PVA）为基质，活性炭（AC）或交联的聚丙烯酸（PAA）为吸附成分，c-PVA-AC和c-PVA-PAA复合材料的大珠通过沉降聚合法制备。用这种方法，用注射器将含有活性炭或交联聚丙烯酸前体的PVA，戊二醛和交联催化剂（盐酸）的水溶液用注射器逐滴注入约80-90度的热矿物油中。 C）位于圆柱形反应器中，在其底部附近装有搅拌器。在沉淀过程中发生部分胶凝。这样可确保颗粒到达塔底，并在其中停留约30-60分钟以完成聚合，并保持其个性而不会聚集。粒度大至约3mm。两种类型的吸附剂的吸附特性取决于其AC或PAA含量。研究了它们对四种染料的吸附能力。 c-PVA-AC和c-PVA-PAA在室温下对碱性ry类染料的饱和吸附容量分别为84和104 mg / g，对碱性Bi斯麦棕Y染料的饱和吸附容量分别为70和72 mg / g。 。 （C）1996 John Wiley＆Sons，Inc. [参考：28]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号