Research on the Preparation and Performance of Binary Modified Maltodextrin Water-Reducing Agent
Using maltodextrin (MD) of different dextrose equivalent (DE) values, 1,3-propanesultone, and maleic anhydride as raw materials, a novel binary modified maltodextrin (BMMD) was synthesized and further applied as a water-reducing agent. Its structure was characterized by Fourier transform infrared (F...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/7186909 |
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| author | Jingzhi Wu Min Qiao Zhifeng Lyu Qianping Ran |
| author_facet | Jingzhi Wu Min Qiao Zhifeng Lyu Qianping Ran |
| author_sort | Jingzhi Wu |
| collection | DOAJ |
| description | Using maltodextrin (MD) of different dextrose equivalent (DE) values, 1,3-propanesultone, and maleic anhydride as raw materials, a novel binary modified maltodextrin (BMMD) was synthesized and further applied as a water-reducing agent. Its structure was characterized by Fourier transform infrared (FT-IR) and UV. The rheological behavior of the sample solution and strengths for concrete were also determined and the adsorption was tested by TOC. The influence of the process parameters to degree of substitution (DS) and the dosage on the fluidity of cement paste were investigated. The results show that the optimal conditions of sulfonation were the MD of DE 15, m (sulfonated agent)/m (MD) of 1.4, the catalyst amount of 1% by mass MD, and the reaction time of 12 h; the optimal conditions of esterification were m (esterified agent)/m (SMD) of 0.6, the reaction temperature of 90°C, and the reaction time of 4 h. The optimal dosages of sulfonated maltodextrin (SMD) and BMMD were 0.475% and 0.45%, respectively. In this dosage, the main dispersion capacity of BMMD attributes to two kinds of anchoring groups (SO3- & COO-) and the appropriate molecular weight of MD. |
| format | Article |
| id | doaj-art-2a061069d7af4d5f9b4fd57a57d9d5a4 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-2a061069d7af4d5f9b4fd57a57d9d5a42025-02-03T06:11:47ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422016-01-01201610.1155/2016/71869097186909Research on the Preparation and Performance of Binary Modified Maltodextrin Water-Reducing AgentJingzhi Wu0Min Qiao1Zhifeng Lyu2Qianping Ran3Jiangsu Research Institute of Building Science, Nanjing 210008, ChinaState Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd., Nanjing 211103, ChinaState Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd., Nanjing 211103, ChinaJiangsu Research Institute of Building Science, Nanjing 210008, ChinaUsing maltodextrin (MD) of different dextrose equivalent (DE) values, 1,3-propanesultone, and maleic anhydride as raw materials, a novel binary modified maltodextrin (BMMD) was synthesized and further applied as a water-reducing agent. Its structure was characterized by Fourier transform infrared (FT-IR) and UV. The rheological behavior of the sample solution and strengths for concrete were also determined and the adsorption was tested by TOC. The influence of the process parameters to degree of substitution (DS) and the dosage on the fluidity of cement paste were investigated. The results show that the optimal conditions of sulfonation were the MD of DE 15, m (sulfonated agent)/m (MD) of 1.4, the catalyst amount of 1% by mass MD, and the reaction time of 12 h; the optimal conditions of esterification were m (esterified agent)/m (SMD) of 0.6, the reaction temperature of 90°C, and the reaction time of 4 h. The optimal dosages of sulfonated maltodextrin (SMD) and BMMD were 0.475% and 0.45%, respectively. In this dosage, the main dispersion capacity of BMMD attributes to two kinds of anchoring groups (SO3- & COO-) and the appropriate molecular weight of MD.http://dx.doi.org/10.1155/2016/7186909 |
| spellingShingle | Jingzhi Wu Min Qiao Zhifeng Lyu Qianping Ran Research on the Preparation and Performance of Binary Modified Maltodextrin Water-Reducing Agent Advances in Materials Science and Engineering |
| title | Research on the Preparation and Performance of Binary Modified Maltodextrin Water-Reducing Agent |
| title_full | Research on the Preparation and Performance of Binary Modified Maltodextrin Water-Reducing Agent |
| title_fullStr | Research on the Preparation and Performance of Binary Modified Maltodextrin Water-Reducing Agent |
| title_full_unstemmed | Research on the Preparation and Performance of Binary Modified Maltodextrin Water-Reducing Agent |
| title_short | Research on the Preparation and Performance of Binary Modified Maltodextrin Water-Reducing Agent |
| title_sort | research on the preparation and performance of binary modified maltodextrin water reducing agent |
| url | http://dx.doi.org/10.1155/2016/7186909 |
| work_keys_str_mv | AT jingzhiwu researchonthepreparationandperformanceofbinarymodifiedmaltodextrinwaterreducingagent AT minqiao researchonthepreparationandperformanceofbinarymodifiedmaltodextrinwaterreducingagent AT zhifenglyu researchonthepreparationandperformanceofbinarymodifiedmaltodextrinwaterreducingagent AT qianpingran researchonthepreparationandperformanceofbinarymodifiedmaltodextrinwaterreducingagent |