Synthesis of polycarboxylic ether superplasticizers based on
Generally, polycarboxylic ether superplasticizer (PCEs) have excellent properties of high water reduction and high slump retention capacity, and they are widely used in engineering [1], [2], [3], [4]. In the synthesis of PCEs, the types of macromonomers are extremely important.
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
Polycarboxylate Superplasticizers | Supercizer PCE | Fritz-Pak
Polycarboxylate superplasticizers are a fairly recent development in the concrete admixture industry. This unique blend of water-reducing chemicals provides substantially more benefits than previous superplasticizers. In fact, Fritz-Pak’s Supercizer PCE provides up to 40% water reduction and up to an eight-inch slump reduction in most
Study on the dispersion performance and mechanism
The steric hindrance formed by polyether side chains is the key factor determining the dispersion performance of polycarboxylate superplasticizer (PCE). While with the increase of the side chain length, the coiled conformation of side chain will prevent the dispersion ability of PCE from being further improved.
Microstructural Characteristics Analysis of PCE Copolymer
The reactivity ratio of monomer and the microstructure of copolymer as polycarboxylate ether (PCE) superplasticizer were investigated. Polycarboxylate ethers (PCEs) were synthesized from methyl allyl polyethylene glycol (MAPEG, Mw=2 400 g/mol) and methacrylic acid (MAA) via aqueous free radical copolymerization in low conversion (P
- How are polycarboxylate superplasticizers synthesized?
- In this work, a series of polycarboxylate superplasticizers (PCEs) were synthesized via copolymerization using a novel macromonomer, ethylene–glycol monovinyl polyethylene glycol (EPEG). The molecular structures were modified by varying the side chain length, carboxylate density and integrating sulfonic group.
- How are gradient and block Polycarboxylate ether superplasticizers synthesized?
- In this paper, gradient and block polycarboxylate ether superplasticizers (PCEs) composed of allyl alcohol polyoxyethyl-ene ether macromonomer and acrylic acid were synthesized via aqueous reversible addition-fragmentation chain transfer (RAFT) polymerization.
- What is Polycarboxylate ether/ester (PCE) superplasticizer?
- 1. Introduction Polycarboxylate ether/ester (PCE) superplasticizer is a generation of superplasticizer developed after poly (naphthalene sulfonate) (PNS), poly (melamine sulfonate) (PMS) and acetone formaldehyde sulfite (AFS).
- Does a polycarboxylate ether (PCE) superplasticizer have a stronger tolerance to MMT?
- Under the same side chain length, PCE with more side chains exhibits stronger tolerance to MMT. Two groups of polycarboxylate ether (PCE) superplasticizers with different side chain lengths and densities were synthesized and characterized.
- What is Polycarboxylate ether (PCE)?
- hardened material and produces a more durable concrete with better mechanical performances . Polycarboxylate ether (PCE) is a new generation of superplasticizer, which was invented in 1981 , following the development of con-ventional lignosulfonate water reducing agent, naphthalene, and melamine-based superplasticizers.
- Does polycarboxylate superplasticizer alter dispersion and water-reducing effects?
- Polycarboxylate superplasticizer, synthesized using different methods, may alter dispersion and water-reducing effects. The synthesis of PCE involves creating a novel macromolecular monomer with a controllable molecular mass, adjustable lipophilic, and hydrophilic moieties, as outlined in this study.
