Determination of adsorption mechanism of polycarboxylate-ether based superplasticizers using crystallization, thermal and mass spectrometry methods
文献类型：期刊论文
| 作者 | Sun, Guoxing1; Wang, Ling2; Weng, Lu-Tao3,4; Zhang, Jinrui1; Li, Zongjin1; Chen, Guangming5 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2014 |
| 卷号 | 4期号:49页码:25479-25485 |
| ISSN号 | 2046-2069 |
| DOI | 10.1039/c4ra02362e |
| 英文摘要 | In this study, a series of suspensions were fabricated by dispersing calcium carbonate (CaCO3), cement and silica fume into a polycarboxylate-ether plasticizer (PCE)/water solution. The PCE used was a comb-like copolymer containing a sodium polymethacrylate (PMA) backbone partially esterified with polyethyleneglycol (PEG) side chains. Sedimentation and optical microscopy tests indicated that both CaCO3 and cement could form homogeneous suspensions. The crystallization behavior of the PEG side chains revealed that PEG had stronger interactions with CaCO3 than with cement and silica fume particles, which was further confirmed by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). A detailed time-of-flight secondary ion mass spectrometry (ToF-SIMS) examination suggested that PEG was mainly located on the surfaces of the CaCO3, and the PMA backbones were mainly located on the surfaces of the cement and silica fume, respectively. The different interactions between copolymer and inorganic particles were associated with their interfacial tensions, and had a remarkable influence on the paste fluidity. |
| 语种 | 英语 |
| WOS记录号 | WOS:000338434500002 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/50149]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, Jinrui |
| 作者单位 | 1.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Hong Kong, Hong Kong, Peoples R China 2.China Bldg Mat Acad, Beijing 100024, Peoples R China 3.Hong Kong Univ Sci & Technol, Mat Characterizat & Preparat Facil, Hong Kong, Hong Kong, Peoples R China 4.Hong Kong Univ Sci & Technol, Dept Chem & Biomol Engn, Hong Kong, Hong Kong, Peoples R China 5.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Guoxing,Wang, Ling,Weng, Lu-Tao,et al. Determination of adsorption mechanism of polycarboxylate-ether based superplasticizers using crystallization, thermal and mass spectrometry methods[J]. RSC ADVANCES,2014,4(49):25479-25485. |
| APA | Sun, Guoxing,Wang, Ling,Weng, Lu-Tao,Zhang, Jinrui,Li, Zongjin,&Chen, Guangming.(2014).Determination of adsorption mechanism of polycarboxylate-ether based superplasticizers using crystallization, thermal and mass spectrometry methods.RSC ADVANCES,4(49),25479-25485. |
| MLA | Sun, Guoxing,et al."Determination of adsorption mechanism of polycarboxylate-ether based superplasticizers using crystallization, thermal and mass spectrometry methods".RSC ADVANCES 4.49(2014):25479-25485. |
入库方式： OAI收割
来源：化学研究所
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