Flocculation properties and adsorption kinetics of cationic starches in kaolin suspensions
文献类型：期刊论文
| 作者 | Chen, Yanxiao; Liu, Shaoying; Wang, Gongying |
| 刊名 | Journal of applied polymer science
 |
| 出版日期 | 2007-09-05 |
| 卷号 | 105期号:5页码:2841-2849 |
| 关键词 | Cationic starch Kaolin Flocculation Adsorption Kinetics Isotherms |
| ISSN号 | 0021-8995 |
| DOI | 10.1002/app.26025 |
| 通讯作者 | Wang, gongying(gywang@cioc.ac.cn) |
| 英文摘要 | The flocculation characteristics of cationic starches with degree of substitution (ds 0.32-0.63) have been evaluated in 1.0 wt % kaolin suspension by spectrophotometry and colloid titration. cationic starch is found to be an effective flocculant for removal of anionic suspension particles. changes in the electrokinetics of kaolin as a function of ph were investigated in the absence of flocculant. the results show that kaolin in water exhibits a negative surface charge at ph > 2.5. the negative hydrophilic surface sites of kaolin are responsible for the adsorption of cationic starch molecules. the experimental data of the adsorption of cationic starch (ds 0.51) follow a langmuir isotherm with maximum adsorption capacities of 16.89 mg/g. for the adsorption of cationic starch, chemical reaction seems significant in the rate-con trolling step and the pseuclosecond-order chemical reaction kinetics provides the best correlation for the experimental data. (c) 2007 wiley periodicals, inc. |
| WOS关键词 | CALCIUM-ION ; DISPERSIONS ; DERIVATIVES ; POLYMERS ; BEHAVIOR ; ACID |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000247943800051 |
| 出版者 | JOHN WILEY & SONS INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2380329 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wang, Gongying |
| 作者单位 | 1.Chinese Acad Sci, Chengdu Inst Organ Chem, Dept Appl Chem, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Yanxiao,Liu, Shaoying,Wang, Gongying. Flocculation properties and adsorption kinetics of cationic starches in kaolin suspensions[J]. Journal of applied polymer science,2007,105(5):2841-2849. |
| APA | Chen, Yanxiao,Liu, Shaoying,&Wang, Gongying.(2007).Flocculation properties and adsorption kinetics of cationic starches in kaolin suspensions.Journal of applied polymer science,105(5),2841-2849. |
| MLA | Chen, Yanxiao,et al."Flocculation properties and adsorption kinetics of cationic starches in kaolin suspensions".Journal of applied polymer science 105.5(2007):2841-2849. |
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来源：中国科学院大学
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