Preparation and characterization of styrene acrylate emulsion surface sizing agent modified with rosin

2011 ◽  
Vol 123 (1) ◽  
pp. 611-616 ◽  
Author(s):  
Jianfeng Xu ◽  
Huiren Hu
Keyword(s):  
Surface Sizing ◽  
Acrylate Emulsion

Preparation and Characterization of Styrene Acrylate Emulsion(SAE) Surface Sizing Agent with Rosin as Functional Monomer

2011 ◽  
Vol 236-238 ◽  
pp. 1457-1462
Author(s):  
Jian Feng Xu ◽  
Hui Ren Hu ◽  
Hui Cui
Keyword(s):  
Relative Viscosity ◽  
Functional Monomer ◽  
Optimum Conditions ◽  
Reaction Conditions ◽  
Ir Laser ◽  
Surface Sizing ◽  
Acrylate Emulsion ◽  
Ft Ir ◽  
Particle Sizer

A series of core-shell type cationic soap-free latex were prepared by using styrene(St), butyl acrylate(BA) and methyl methacrylate(MMA) as main materials and introducing rosin as the functional monomer. In this reaction, starch(CS-8), which has low relative viscosity , was used as the emulsifier and dispersant. The influencing factors of the reaction were especially studied and the optimum conditions were got. Then the products were characterized by using scanning electron microscope (SEM), FT-IR, laser particle sizer, particle charge detector(PCD). The results show that the excellent performance and good sizing effects of SAE are achieved when the reaction conditions are as follows: the starch amount is 8%(wt), the charge for the initiator(APS) is 0.5%, and the amount of rosin is 2%(wt). And the water-resistant performance of paper is improved significantly when the rosin is chosen as the functional monomer.

Effect of Water-Resistance Agent on the Performance and Surface Sizing Behavior of Styrene Acrylate Emulsion (SAE)

2012 ◽  
Vol 550-553 ◽  
pp. 3323-3330 ◽  
Author(s):  
Jian Feng Xu ◽  
Ling Long ◽  
Hui Ren Hu ◽  
Yan Bo
Keyword(s):  
Water Resistance ◽  
Orthogonal Experiment ◽  
Relative Viscosity ◽  
Optimum Conditions ◽  
Reaction Conditions ◽  
Surface Sizing ◽  
Cationic Monomer ◽  
Acrylate Emulsion ◽  
Better Than ◽  
Trimethoxy Silane

A series of starch-based styrene acrylate emulsion (SAE) modified with water-resistance agent were prepared by introducing rosin, organosilane(γ-amino propyl triethoxysilane (KH550), γ-(2,3-epoxypropoxy)-propytrimethoxysilane(KH560) and γ-methacryloxypropyl trimethoxy silane (KH570) as the functional monomer, respectively. In the reaction, starch(CS-8), which is low relative viscosity, was used as the emulsifier and dispersant. The optimum conditions of the reaction had especially been studied by orthogonal experiment and then the emulsion properties and surface sizing behaviors of the SAE modified with different kinds of water-resistance agents were compared. Finally, the products which had excellent properties were characterized and the sizing performance was investigated. The results showed that the excellent performance and good sizing effects of styrene acrylate emulsion (SAE) were achieved when the reaction conditions were as follows: rosin was selected as the water resistance-agent with the dosage of 2%(wt), the reaction temperature was 88°C, the mass ratio of St and BA was 9:11, the stirring speed was 130 round per minute and the dosage of initiator (APS), cationic monomer (DM) and CS-8 was 0.5%, 2%(wt) and 7%, respectively. The water-resistance properties of starch-based SAE were significantly improved by using rosin as the water-resistance agent and the surface sizing performance were better than that of the commercial AKD.

Structure-property relationships in styrene-butyl acrylate emulsion copolymers: 1. Preparation and characterization of latexes

Polymer ◽  
1989 ◽  
Vol 30 (10) ◽  
pp. 1872-1882 ◽  
Author(s):  
A. Cruz-Rivera ◽  
L. Rios-Guerrero ◽  
C. Monnet ◽  
B. Schlund ◽  
J. Guillot ◽  
...  
Keyword(s):  
Butyl Acrylate ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Acrylate Emulsion

scholarly journals Preparation and characterization of polydimethylsiloxane-based paper transparentizing agent and its application in paper coating

BioResources ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 277-290
Author(s):  
Haoran Ma ◽  
Yujie Gao ◽  
Longgan Tian
Keyword(s):  
Fiber Surface ◽  
Paper Machine ◽  
Optimal Conditions ◽  
Combined Method ◽  
Base Paper ◽  
Surface Sizing ◽  
Dipping Temperature ◽  
Related Plant ◽  
New Type

A new type of polydimethylsiloxane-based paper transparentizing agent was prepared via a combined method. The performance of the transparentizing agent was investigated systematically by adding and dipping, with use of the surface sizing device of a paper machine. Optimum performance was found at 30% concentration of the transparentizing agent and 30 to 45 °C of dipping temperature. Under the optimal conditions, the transparentizing t agent achieved a rapid penetration in the base paper and filled in the pores of the paper, to be further effectively adsorbed and retained on the fiber surface. The transparency of test paper reached as high as 76±0.97 %, which was 37±1.4% higher than that of the control. However, the addition of transparentizing agent reduced the mechanical strength of paper slightly. The as-prepared transparentizing agent was found to exhibit excellent application stability and biodegradability when applied in the paper machine，When used as plastic film, the transparent paper would lose its strength completely after eight weeks. The resulting transparent paper can be used to develop paper-based film and other related plant based transparent/ translucent paper, which has great potential in replacing plastic products and eliminating white pollution.

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

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