Research and Application of Polycarboxylic Acid Water Reducer with Different Molecular Weight

In this paper, a polycarboxylic water reducing agent was synthesized by using Methylallyl polyethylene glycol (HPEG) with molecular weight of 1200, 2400, 2800 and 3400 under the same conditions, C80 concrete tests were performed on these four molecular weight superplasticizers, verify the effect of different molecular weight polycarboxylic acid water reducer in C80 pumping concrete, finally, a kind of low molecular weight polycarboxylic acid water reducer with viscosity reducing effect in high-grade concrete is obtained, which can promote pumping of high-grade concrete.

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Preparation of Electrospun Fibers of Polyethylene Glycol Monomethyl Ether-Co-Polyaniline Blended with Polycaprolactone: Effect of Low Molecular Weight Copolymer on Obtained Fibers

Polymer-Plastics Technology and Engineering ◽

10.1080/03602559.2013.844237 ◽

2014 ◽

Vol 53 (3) ◽

pp. 254-261 ◽

Cited By ~ 6

Author(s):

Leyla Shadi ◽

Mohammad Karimi ◽

Karim Asadpour-Zeynali ◽

Ali Akbar Entezami ◽

Kazem Dindar Safa

Keyword(s):

Molecular Weight ◽

Polyethylene Glycol ◽

Monomethyl Ether ◽

Electrospun Fibers ◽

Low Molecular Weight ◽

Glycol Monomethyl Ether

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Effects of ultrasonic cavitation on neutralization process of low molecular weight polyethylene glycol

The Canadian Journal of Chemical Engineering ◽

10.1002/cjce.23309 ◽

2018 ◽

Vol 97 (1) ◽

pp. 395-405 ◽

Cited By ~ 1

Author(s):

Abbas Azarpour ◽

Sohrab Zendehboudi ◽

Suzana Yusup ◽

Athirah Khalid ◽

Yahui Zhang

Keyword(s):

Molecular Weight ◽

Polyethylene Glycol ◽

Ultrasonic Cavitation ◽

Low Molecular Weight ◽

Neutralization Process

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Thin-layer and gel permeation chromatographic separation of low molecular weight polyethylene glycol oligomers

Clinica Chimica Acta ◽

10.1016/0009-8981(83)90365-0 ◽

1983 ◽

Vol 134 (3) ◽

pp. 255-264 ◽

Cited By ~ 3

Author(s):

Howard R. Sloan ◽

H.Juhling McClung ◽

Priscilla A. Powers ◽

Benny Kerzner

Keyword(s):

Molecular Weight ◽

Polyethylene Glycol ◽

Thin Layer ◽

Chromatographic Separation ◽

Low Molecular Weight ◽

Gel Permeation ◽

Glycol Oligomers

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Biodistribution, metabolism, and in vivo gene expression of low molecular weight glycopeptide polyethylene glycol peptide DNA co-condensates

Journal of Pharmaceutical Sciences ◽

10.1002/(sici)1520-6017(200004)89:4<499::aid-jps7>3.3.co;2-m ◽

2000 ◽

Vol 89 (4) ◽

pp. 499 ◽

Cited By ~ 1

Author(s):

Wendy T. Collard ◽

Yongsheng Yang ◽

Kai Y. Kwok ◽

Youmie Park ◽

Kevin G. Rice

Keyword(s):

Gene Expression ◽

Molecular Weight ◽

Polyethylene Glycol ◽

Low Molecular Weight

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NCMP-31. RISK OF INTRACRANIAL HEMORRHAGE (ICH) IN PATIENTS WITH HIGH-GRADE GLIOMA (HGG) ON THERAPEUTIC LOW MOLECULAR WEIGHT HEPARIN (LMWH)

Neuro-Oncology ◽

10.1093/neuonc/noy148.830 ◽

2018 ◽

Vol 20 (suppl_6) ◽

pp. vi200-vi200

Author(s):

Jasmin Jo ◽

Joseph Donohue ◽

Gina Petroni ◽

David Schiff

Keyword(s):

Molecular Weight ◽

Intracranial Hemorrhage ◽

Low Molecular Weight Heparin ◽

High Grade Glioma ◽

Low Molecular Weight ◽

High Grade

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Synthesis and characterization of a high performance polycarboxylic acid water reducing agent

E3S Web of Conferences ◽

10.1051/e3sconf/202019801018 ◽

2020 ◽

Vol 198 ◽

pp. 01018

Author(s):

Qiong Yan ◽

Liangke Yao ◽

Yongzhong Xia ◽

Shishan Liu ◽

Lingcong Chen

Keyword(s):

High Performance ◽

Chain Transfer ◽

Reducing Agent ◽

Acid Water ◽

Synthesis Process ◽

Process Conditions ◽

Polycarboxylic Acid ◽

Synthetic Process ◽

Working Performance

The optimal synthesis process conditions of polycarboxylic acid water reducers were investigated and characterized by infrared spectroscopy as well as GPC using high performance polycarboxylic acid water reducers synthesized by isoproterenol polyoxyethylene ether polymerized with acrylic acid and introducing unsaturated monomeric dibasic ester. The results showed that the optimum synthetic process conditions were as follows: acid-ether ratio of 3.0:1, amount of binary ester as 2.8% of monomer mass, amount of initiator as 0.35% of monomer mass, amount of chain transfer agent as 0.35% of monomer mass; the initial slump and initial expansion of the concrete of the synthetic water-reducing agent PCE-H were greater than those of the commercially available polycarboxylic acid water-reducing agent PCE-W, and the working performance of the concrete was better. PCE-H also has no adverse effect on strength.

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Less Loss of Fluidity of Polycarboxylic Acid Type Water Reducer

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.71-78.3452 ◽

2011 ◽

Vol 71-78 ◽

pp. 3452-3456

Author(s):

Xun Zhong

Keyword(s):

Molecular Weight ◽

Cement Paste ◽

Side Chain ◽

Polycarboxylic Acid ◽

Acid Type ◽

Type Water ◽

Different Molecular Weight

Cement paste and concrete with different molecular weight of side-chain of polycarboxylic acid type water reducer (PC) and retarder has been researched. In this way, the method of adjusting the molecular weight of side-chain and complexing retarder to hold fluidity has been discussed. The results show that with increase molecular weight of side-chain, the dispersibility and holding dispersibility increases. With retarder and PC, the dispersibility and holding dispersibility of PC with big more molecular weight of side-chain increases and the loss of fluidity at 1h prominence reduces. But it relates to breed of cement. Especially at low ratio of water and cement, when molecular weight of side-chain is more than 2000, complexing PC and retarder can improve the fluidity and holding fluidity.

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