响应面法优化制备PAC-PDMDAAC杂化絮凝剂及其表征

doi:10.3969/j.issn.0438-1157.2014.02.051

化工学报 ›› 2014, Vol. 65 ›› Issue (2): 731-736.DOI: 10.3969/j.issn.0438-1157.2014.02.051

• 材料化学工程与纳米技术 • 上一篇下一篇

响应面法优化制备PAC-PDMDAAC杂化絮凝剂及其表征

蒋绍阶, 冯欣蕊, 李晓恩, 蒋世龙

重庆大学三峡库区生态环境教育部重点实验室, 重庆 400045

收稿日期:2013-05-17 修回日期:2013-06-20 出版日期:2014-02-05 发布日期:2014-02-05
通讯作者: 冯欣蕊
基金资助:
村镇饮用水安全保障重大科技工程项目（2012BAJ 25B06-001）；国家水体污染控制与治理科技重大专项项目（2009ZX 07424-004）。

Preparation of PAC-PDMDAAC hybrid flocculant by response surface method and its characterization

JIANG Shaojie, FENG Xinrui, LI Xiao'en, JIANG Shilong

Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Chongqing University, Chongqing 400045, China

Received:2013-05-17 Revised:2013-06-20 Online:2014-02-05 Published:2014-02-05
Supported by:
supported by the Towns and Villages Drinking Water Safety and Security of Major Scientific and Technological Projects (2012BAJ 25B06-001) and the National Science and Technology Major Water Special Project in Water Pollution Control and Governance (2009ZX07424-004).

摘要/Abstract

摘要： 以硅烷偶联剂KH570为改性剂，以过硫酸铵为引发剂，合成了聚合氯化铝-聚二甲基二烯丙基氯化铵（PAC-PDMDAAC）杂化絮凝剂。采用响应面分析法通过建立特征黏度与各因素之间的Box-Behnken数学模型，对杂化PAC-PDMDAAC的制备工艺进行优化，最优制备条件为：DMDAAC质量分数为33%，引发剂质量分数为0.6%，反应温度为64℃，反应时间为3 h。电导测试、傅里叶红外光谱（FT-IR）及热重分析（TGA）结果表明PAC-PDMDAAC杂化产物的有机-无机组分间以共价键形式键合，性质稳定；扫描电镜（SEM）照片显示其结构疏松，粒度较大，更易发挥吸附架桥作用。

关键词: 混凝, 制备, 优化, 响应曲面法, 有机-无机杂化

Abstract: Polyaluminum chloride (PAC)-poly(dimethyl diallyl ammonium chloride) (PDMDAAC), a new type of organic-inorganic hybrid flocculant, was prepared by using KH570 as modifying agent and ammonium persulfate as initiator. The Box-Behnken mathematical relational model between intrinsic viscosity and affecting factors was established, and the technology of preparing PAC-PDMDAAC was optimized. The optimum preparation conditions were: DMDAAC mass fraction 33%, initiator mass fraction 0.6%, reaction temperature 64℃ and reaction time 3 h. Conductivity measurement, FT-IR and TGA showed covalent bond between PAC and PDMDAAC. SEM photos revealed that the PAC-PDMDAAC hybrid flocculant had loose structure and large particle size, which made it easier to play bridging and adsorption roles.

Key words: coagulation, preparation, optimization, response surface methodology, organic-inorganic hybrid

中图分类号:

TU991.22

蒋绍阶, 冯欣蕊, 李晓恩, 蒋世龙. 响应面法优化制备PAC-PDMDAAC杂化絮凝剂及其表征[J]. 化工学报, 2014, 65(2): 731-736.

JIANG Shaojie, FENG Xinrui, LI Xiao'en, JIANG Shilong. Preparation of PAC-PDMDAAC hybrid flocculant by response surface method and its characterization[J]. CIESC Journal, 2014, 65(2): 731-736.

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响应面法优化制备PAC-PDMDAAC杂化絮凝剂及其表征

Preparation of PAC-PDMDAAC hybrid flocculant by response surface method and its characterization

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