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

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

doi:10.3969/j.issn.0438-1157.2014.02.051

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

更新时间：2025-12-10

- Preparation of PAC-PDMDAAC hybrid flocculant by response surface method and its characterization
- CIESC Journal Issue 2, Pages: 731-736(2014)
- 作者机构：
  
  重庆大学三峡库区生态环境教育部重点实验室,重庆,400045
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.02.051
  CLC： U991.22
- Online First：05 February 2014，
  
  Published：05 February 2014
- 稿件说明：
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JIANG Shaojie, FENG Xinrui, LI Xiao'en, et al. Preparation of PAC-PDMDAAC hybrid flocculant by response surface method and its characterization[J]. CIESC Journal, 2014, (2): 731-736.
DOI：

JIANG Shaojie, FENG Xinrui, LI Xiao'en, et al. Preparation of PAC-PDMDAAC hybrid flocculant by response surface method and its characterization[J]. CIESC Journal, 2014, (2): 731-736. DOI： 10.3969/j.issn.0438-1157.2014.02.051.

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。

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.

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