Paper Title:
Adsorption and Dispersion Characteristics of Superplasticizer with Waste Plexiglas (WPS) on the Surface of Gypsum Particles
  Abstract

A superplasticizer (WPS) was synthesized from waste plexiglas and sodium allysulfonate in this paper. Poly (methyl methacrylate-co-ethyl acrylate) grafling sodium allysulfonate (PMMA-g-AS) was prepared through reactive extrusion in self-single screw extruder and hydrolysis reaction. The structures of the WPS was characterized by FT-IR spectrometer. The results show that structure of the WPS are clear. By using UV-visible adsorption spectrophotometer, micro-electrophoresis potential analyzer, and X-ray photo spectroscopy, the adsorption characteristics and surface electrochemical properties of WPS were studied in comparison with traditional naphthalene sulfonated formaldehyde condensates (FDN) whose dispersion ability mainly depends on electrostatic repulsive forces. The results indicated that the adsorption behavior of WPS on gypsum particles follows a Langmuir isothermal adsorption model with an adsorption heat of 18.79 kJ/mol and an adsorption layer thickness of 17. 52 nm. Adsorption isotherm suggested that Langmiur single layer adsorption occurred during the process of adsorption of WPS and FDN on gypsum particles.

  Info
Periodical
Chapter
Chapter 2: Manufacturing Technology and Machinery Automation
Edited by
Quanjie Gao
Pages
272-276
DOI
10.4028/www.scientific.net/AMM.127.272
Citation
G. Zheng, R. M. Wang, G. Y. Zhao, X. J. Yu, "Adsorption and Dispersion Characteristics of Superplasticizer with Waste Plexiglas (WPS) on the Surface of Gypsum Particles", Applied Mechanics and Materials, Vol. 127, pp. 272-276, 2012
Online since
October 2011
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$32.00
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