Progresses in Synthesis of Polycarboxylate Superplasticizer
Polycarboxylate superplasticizer (PCE) was synthesized by unsaturated monomers of carboxylic acid, alkane macromonomers of long chains, and others. It was an excellent cement dispersant which would make great performance in concrete [ 1 ].
Synthesis of a Novel Polycarboxylate Superplasticizer with
A novel polycarboxylate superplasticizer (PCE) with a hyperbranched structure (HPCE) was successfully synthesized in this work. With Diallylamine, methyl propenoate and trihydroxymethylpropane (TMP) as raw material, p-toluenesulfonic acid (PTSA) as catalyst, a hyperbranched monomer B was firstly synthesized.
Synthesis and performance of a novel polycarboxylate
A novel monovinyl β-cyclodextrin monomer (β-P) is employed to synthesize polycarboxylate superplasticizers with β-cyclodextrin (β-CD) grafted on the end of side chain [PAA-g-(β-P) n HPEG, n is the mass ratio of β-P in macromonomer, n = 3% ~ 9%]. β-P is synthesized through grafting β-CD on the polyoxyethylene (PEO) via click reaction, which is the first try to superimpose the steric
Synthesis and Properties of a Polycarboxylate
Polycarboxylate superplasticizers (PCEs) are comb-shaped polymers with an anionic backbone and several nonionic pendant chains, which typically are comprised of polyethylene glycols. In this study, the synthesis of a new type of superplasticizer is presented, which does not exhibit the typical comb-shaped form of PCEs but is built up from a linear polyetheramine and a hyperbranched
Synthesis of a novel polycarboxylate superplasticizer with
The dispersion ability of polycarboxylate superplasticizer (PCE) in fresh concrete was much impeded by clay impurities. To improve the dispersion of PCE in the clay-contained concrete, a novel PCE with carboxyl as a specific branched chain terminal group was synthesized, using modified polyether as the raw material which was prepared through esterification between hexahydrophthalic anhydride
- Can comb-like polycarboxylate superplasticizer be synthesized by ATRP method?
- Based on the obtained results, the following conclusions can be drawn: 1. A comb-like polycarboxylate superplasticizer with relatively uniform polymer species (A-CPCE) was successfully synthesized by ATRP method.
- Can polycarboxylate superplasticizer solve the problem of high viscosity?
- To solve the problem of high viscosity for fresh concrete especially high-grade concrete, a novel viscosity-reducing type of polycarboxylate superplasticizer (PCE) was synthesized based on innovative design of molecular structure, and also was characterized to confirm the designed molecular structure.
- How to synthesize a comb-like polycarboxylate superplasticizer with relatively uniform polymer species?
- 1. A comb-like polycarboxylate superplasticizer with relatively uniform polymer species (A-CPCE) was successfully synthesized by ATRP method. Various characterization methods such as 1 H NMR, SEC and SCD determined the acquisition and molecular information of the synthesized products. 2.
- What is a comb-like polycarboxylate superplasticizer (PCE)?
- In this study, a novel comb-like polycarboxylate superplasticizer (PCE) was synthesized using isobutenyl polyethylene glycol (IPEG) and hydroxyethyl acrylate (HEA) by atom transfer radical polymerization (ATRP) (defined as A-CPCE).
- What is a polycarboxylate superplasticizer?
- Polycarboxylate superplasticizers (PCEs) are comb-shaped polymers with an anionic backbone and several nonionic pendant chains, which typically are comprised of polyethylene glycols. In this study,...
- Does amphoteric polycarboxylate superplasticizer perform better than conventional PCE?
- The amphoteric polycarboxylate superplasticizer exhibited better performances than those of conventional PCE. The interactions of the amphoteric polycarboxylate superplasticizer with cement particles were systematically investigated.
