Preparation and application of hyper-branched polycarboxylic acid with high efficiency of scale inhibition

doi:10.11894/iwt.2018-1043

Industrial Water Treatment ›› 2019, Vol. 39 ›› Issue (12): 69-73. doi: 10.11894/iwt.2018-1043

• Research and Experiment • Previous Articles Next Articles

Preparation and application of hyper-branched polycarboxylic acid with high efficiency of scale inhibition

Zhijian Zhang¹(),Yetao Wang^2,³,Henghui Huang^2,³,Jun Liu¹,Hualin Chen^1,*()

1. College of Chemistry & Environment Engineering, Southwest Minzu University, Chengdu 610041, China
2. Chengdu Institute of Organic Chemical, Chinese Academy of Sciences, Chengdu 610041, China
3. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2019-11-03 Online:2019-12-20 Published:2019-12-21
Contact: Hualin Chen E-mail:zzjsmu@163.com;aofly@163.com
Supported by:
国家自然科学基金(21474114);四川省青年科技创新研究团队(2017TD0024);西南民族大学研究生创新型科研项目(CX2018SZ129)

高阻垢性能超支化聚羧酸的制备及应用

张枝健¹(),王液涛^2,³,黄衡恢^2,³,刘军¹,陈华林^1,*()

1. 西南民族大学化学与环境保护工程学院, 四川成都 610041
2. 中国科学院成都有机化学研究所, 四川成都 610041
3. 中国科学院大学, 北京 100049

通讯作者: 陈华林 E-mail:zzjsmu@163.com;aofly@163.com
作者简介:张枝健(1994-),在读硕士研究生。电话:15608217332, E-mail:zzjsmu@163.com
基金资助:
国家自然科学基金(21474114);四川省青年科技创新研究团队(2017TD0024);西南民族大学研究生创新型科研项目(CX2018SZ129)

Abstract

Abstract:

Hyper-branched polycarboxylic acid is prepared by a two-step method. The first-step is to synthesize the functional monomer(AMA) by maleic anhydride(MA) and propylene glycol. The second-step is to synthesize the hyper-branched polycarboxylic acid by the copolymerization of AMA with maleic anhydride through radical polymerization. The optimum preparation process is obtained by investigating the effects of reaction temperature, time, monomer ratio and initiator dosage on the scale inhibition. Subsequently, the effects of mass concentration, pH, calcium concentration and storage time on the scale inhibition are analyzed. The results show that with the concentration of hyper-branched polycarboxylic acid of 30 mg/L, the scale inhibition rates of CaCO₃ and CaSO₄ are as high as 95.2% and 92.3%, respectively. Meanwhile, the calcium tolerance is high and the scale inhibition performs excellently at pH 5-9. After 145 days of aging, the product still maintains a high scale inhibition.

Key words: hyper-branched polymer, polycarboxylic acid, scale inhibition

摘要：

采用两步法制备了超支化聚羧酸。首先用马来酸酐（MA）和丙烯醇反应得到功能单体AMA，AMA与马来酸酐经自由基聚合得到超支化聚羧酸，考察了反应温度、时间、单体比例、引发剂用量等条件对超支化聚羧酸阻垢率的影响，得到最佳制备工艺。随后探讨了超支化聚羧酸质量浓度、pH、钙离子浓度和存放时长对阻垢率的影响。结果表明，超支化聚羧酸质量浓度在30 mg/L时对碳酸钙和硫酸钙的阻垢率高达95.2%、92.3%。溶液pH为5~9时阻垢性能优良，同时具有高钙容忍度。产物陈放145 d后阻垢性能仍然良好。

关键词: 超支化聚合物, 聚羧酸, 阻垢

CLC Number:

Zhijian Zhang,Yetao Wang,Henghui Huang,Jun Liu,Hualin Chen. Preparation and application of hyper-branched polycarboxylic acid with high efficiency of scale inhibition[J]. Industrial Water Treatment, 2019, 39(12): 69-73.

张枝健,王液涛,黄衡恢,刘军,陈华林. 高阻垢性能超支化聚羧酸的制备及应用[J]. 工业水处理, 2019, 39(12): 69-73.

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https://www.iwt.cn/EN/Y2019/V39/I12/69

Figures/Tables 11

References 11

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项目	n(MA):n(AMA)	相对数均分子质量	相对重均分子质量	多分散性	阻碳酸钙率垢/%	阻硫酸钙垢率/%
聚羧酸-1	0.8	5 468	6 258	1.144	89.82	82.44
聚羧酸-2	1.0	4 986	5 869	1.177	92.35	88.18
聚羧酸-3	1.2	3 754	5 796	1.194	93.91	88.92
聚羧酸-4	1.5	3 012	5 583	1.854	95.37	89.66
聚羧酸-5	1.8	1 789	3 303	1.846	86.26	85.83

项目	n(MA):n(AMA)	相对数均分子质量	相对重均分子质量	多分散性	阻碳酸钙率垢/%	阻硫酸钙垢率/%
聚羧酸-1	0.8	5 468	6 258	1.144	89.82	82.44
聚羧酸-2	1.0	4 986	5 869	1.177	92.35	88.18
聚羧酸-3	1.2	3 754	5 796	1.194	93.91	88.92
聚羧酸-4	1.5	3 012	5 583	1.854	95.37	89.66
聚羧酸-5	1.8	1 789	3 303	1.846	86.26	85.83

n(MA):n(AMA)	阻碳酸钙垢率/%	阻硫酸钙垢率/%	单体转化率/%
0.8:1	89.81	82.43	92.28
1:1	92.33	88.15	90.34
1.2:1	93.90	88.95	86.65
1.5:1	95.32	89.63	67.77
1.8:1	86.22	86.27	62.88

n(MA):n(AMA)	阻碳酸钙垢率/%	阻硫酸钙垢率/%	单体转化率/%
0.8:1	89.81	82.43	92.28
1:1	92.33	88.15	90.34
1.2:1	93.90	88.95	86.65
1.5:1	95.32	89.63	67.77
1.8:1	86.22	86.27	62.88

引发剂质量分数/%	阻碳酸钙率垢/%	阻硫酸钙率垢/%	单体转化率/%
1	60.52	54.45	23.54
2	64.94	60.98	32.64
3	83.65	88.43	43.78
4	89.32	92.68	88.25
5	90.67	93.52	90.66

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