Influence of Promoter on the Glossiness of Water-Soluble Varnish

2010 ◽  
Vol 174 ◽  
pp. 441-444
Author(s):  
De Ping Zhao ◽  
Xian Fu Wei ◽  
Pei Qing Huang
Keyword(s):  
Water Soluble ◽  
Wetting Agent ◽  
Important Indicator ◽  
Varnish Film ◽  
Emulsion Flow ◽  
Agent Flow ◽  
Different Content

The glossiness is an important indicator of evaluation polishing printed matter. The water-soluble varnish consisting of different content and kinds of promoter is prepared. Then proofs are coating by wire rods. Measuring glossiness of proofs, we analyze the influence of promoter on glossiness of water-soluble varnish. The results show that adding cosolvent, substrate wetting agent, flow agent, wax emulsion and other promoter in water-soluble varnish can improve the glossiness of water-soluble varnish film. When cosolvent ethanol was adding to 3%, the film glossiness achieves about 80 and adding a small amount of wax emulsion, flow agents, the film glossiness can be increased about 10%.

Research of the Factor that Influence the Glossiness of Water-Based Tipping Paper Gravure Varnish

2012 ◽  
Vol 262 ◽  
pp. 426-429
Author(s):  
Mao Jie Yu ◽  
Bei Qing Huang ◽  
Xian Fu Wei
Keyword(s):  
Great Influence ◽  
Water Soluble ◽  
Wetting Agent ◽  
Water Based ◽  
Varnish Film ◽  
Agent Flow ◽  
Different Content

In order to prepare high-gloss water-soluble gravure varnish which is used on tipping paper, different content and types of filming resin with different content of all kinds of additives added are used to prepare water-soluble gravure varnish. Test its main performance and then use IGT apparatus to proof. The effect of varnish component and content on glossiness of water-soluble varnish is discussed by measuring glossiness of proof. The results show: different content and types of water-soluble filming resin have a great influence on the glossiness of water-soluble gravure varnish which is used on tipping paper; the glossiness of water-soluble varnish film can improve by adding auxiliaries such as cosolvent, substrate wetting agent, flow agent, wax emulsion and other promoter into water-soluble varnish system.

A new technique to clean down and feather dust: Composition and resolution of down dust

2018 ◽  
Vol 89 (15) ◽  
pp. 3080-3088
Author(s):  
Ruixia Sun ◽  
Zongqian Wang ◽  
Ning Pan ◽  
Tianlong Chen ◽  
Mingrong Wang
Keyword(s):  
Water Soluble ◽  
Important Indicator ◽  
Washing Process ◽  
Dust Composition ◽  
A New Technique ◽  
Main Component ◽  
Integrated Device ◽  
Published Research ◽  
Fine Organic

The amount of dust is an important indicator in evaluating the quality of down and feather. However, there has been little published research on dust in down and feather and no report of the generation of dust and its reduction. We extracted dust from down and feather and divided it into water-soluble dust and floating dust based on solubility and then calculated the proportion of the two types of dust. The morphology of floating dust was characterized and a formation mechanism proposed for fine dust. A machine was designed to reduce the dust from down and feather during washing. Floating dust was a major component of down and feather dust, accounting for up to 71.5% (m/m). The main component of floating dust was organic material. The fibrillation and pulverization of down fibers is proposed as the main cause of fine organic dust. An overflow de-dusting and centrifuging integrated device was constructed to replace the traditional centrifugal dehydration machine in the washing of down and feather. The dust level was reduced significantly when using the new machine, especially floating dust. Therefore the dust problem will be better resolved by using this technology in the down-washing process, alleviating the health concerns of workers and helping the industry to become more sustainable.

scholarly journals The Influence of Various Matrixes on the Strength Properties of Moulding Sands with Thermally Hardened Hydrated Sodium Silicate for the Ablation Casting Process

2021 ◽  
Vol 5 (2) ◽  
pp. 31-35
Author(s):  
Katarzyna Major-Gabryś ◽  
Sabina Puzio ◽  
Agata Bryłka ◽  
Jadwiga Kamińska
Keyword(s):  
Sodium Silicate ◽  
Casting Process ◽  
Strength Properties ◽  
Water Soluble ◽  
Review Of Literature ◽  
Casting Technology ◽  
Single Use ◽  
Different Content ◽  
Sufficient Strength ◽  
Selection Of

The essence of ablation casting technology consists in pouring castings into single-use moulds made from the mixture of sand and a water-soluble binder. After pouring the mould with liquid metal yet while the casting is still solidifying, the mould destruction (washing out, erosion) takes place using a stream of cooling medium, which in this case is water. This paper focuses on the selection of  moulding sands with hydrated sodium silicate for moulds used in ablation casting. The research is based on the use of water glass 145 and 150 as binders. As part of the research, loose moulding mixtures based on two silica sands from different sand mines with different content of binders were prepared. The review of literature data and the results of own studies have shown that moulding sand with hydrated sodium silicate hardened by dehydration is characterized by sufficient strength properties to be used in the ablation casting process. Our own research also confirmed the possibility of using these sand mixtures in terms of both casting surface quality and sand reclamation. The results presented in this paper prove that both sand grains and types of binder tested may be used as components in moulding sands devoted to ablation casting.

scholarly journals Physical Hydrogels of Oxidized Polysaccharides and Poly(Vinyl Alcohol) for Wound Dressing Applications

Materials ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1569 ◽  
Author(s):  
Raluca Ioana Baron ◽  
Madalina Elena Culica ◽  
Gabriela Biliuta ◽  
Maria Bercea ◽  
Simona Gherman ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Water Soluble ◽  
Poly Vinyl Alcohol ◽  
Initial Structure ◽  
Self Healing ◽  
Natural Polymers ◽  
Physical Network ◽  
The Fourier Transform ◽  
Physical Phenomena ◽  
Different Content

Two natural polymers, i.e., cellulose and water soluble pullulan, have been selectively oxidized employing the TEMPO-mediated protocol, to allow the introduction of C6-OOH groups. Thereafter, the composite hydrogels of poly(vinyl alcohol) (PVA) and different content of the oxidized polysaccharides were prepared by the freezing/thawing method. The Fourier transform infrared spectroscopy (FTIR) has been used to discuss the degree of interaction between the hydrogels constituents into the physical network. The homogeneity of the prepared hydrogels as revealed by the SEM show an excellent distribution of the oxidized polysaccharides inside the PVA matrix. The samples exhibit self-healing features, since they quickly recover the initial structure after being subjected to a large deformation. The cell viability was performed for the selected hydrogels, all of them showing promising results. The samples are able to load L-arginine both by physical phenomena, such as diffusion, and also by chemical phenomena, when imine-type bonds are likely to be formed. The synergism between the two constituents, PVA and oxidized polysaccharides, into the physical network, propose these hydrogels for many other biomedical applications.

scholarly journals Content of water-soluble carbohydrates as a quality indicator of cryogenic soils

2019 ◽  
pp. 43-48
Author(s):  
Bedernichek T. ◽  
Рartyka Т.
Keyword(s):  
Organic Matter ◽  
Global Climate ◽  
Biological Properties ◽  
Water Soluble ◽  
Soluble Carbohydrates ◽  
Soluble Organic Matter ◽  
Important Indicator ◽  
Cryogenic Soils ◽  
Water Soluble Carbohydrates ◽  
Zonal Soils

The content of water-soluble organic matter in the soil is an important indicator of its quality and affects physical, chemical and biological properties of soil. This indicator is widely used for assessment of most zonal soils. However, in some cases, accumulation rates of water-soluble organic compounds in soil may significantly exceed the rate of their destruction. If so, it is more important to quantify not only the fraction of water-soluble organic matter as a whole but also to determine its composition. In this context, it is important to determine the content of the most labile and available for microorganisms compound – water-soluble carbohydrates. In this paper, the content of water-soluble carbohydrates and water-soluble organic matter in soils of Coastal Antarctica was estimated. Soils under three different plant communities were studied. We found that water-soluble organic matter of studied soils may contain up to 50% of carbohydrates. Hence, further research is needed to study other soils of Coastal Antarctica to determine their vulnerability to global climate change

Crosslinking of Guar and Guar Derivatives

SPE Journal ◽  
2007 ◽  
Vol 12 (03) ◽  
pp. 316-321 ◽  
Author(s):  
Cuiyue Lei ◽  
Peter E. Clark
Keyword(s):  
Polymer Solution ◽  
Critical Concentration ◽  
Polymer Concentration ◽  
Water Soluble ◽  
Solution Behavior ◽  
Water Soluble Polymer ◽  
Important Indicator ◽  
Low Concentrations ◽  
Wide Range ◽  
Overlap Concentration

Summary Crosslinking of guar and guar derivatives has played a major role in improving stimulation of oil and gas wells. While crosslinking has been used for a number of years, many facets of crosslinked systems are still not well understood. Part of the problem is that the traditional methods of determining the properties of crosslinked fluids work well for obtaining the data necessary for treatment design, but yield little insight into the nature of the crosslinked system. A good example of this is found in the development of low polymer concentration crosslinked gels. These gels are important because they lower costs and help to minimize formation damage. In this paper, methods for predicting crosslinkability at low concentrations are reported. The polymer literature is filled with methods for characterizing polymer solutions almost none of which find wide use in the development of crosslinked fracturing fluids. Dawson et al. (2000) first reported that the concentration at which a polymer solution transitions from dilute to semidilute could be used as a method for determining the potential for low concentration crosslinking in guar or guar-derivative solutions. To test this assertion, we have conducted a series of experiments that not only shows that the dilute-semidilute transition concentration is an important indicator for the polymers used in this study, but also presents a framework for exploring the potential of other polymer systems. These experiments show conclusively that low-polymer concentration crosslinking is strongly related to the value of the critical overlap concentration, c*. Both the critical overlap concentration and the critical crosslinking concentration increase in the order guar-3 < CMG < CMHPG < guar < HPG. In addition, we show that the critical crosslinking concentration for the range of polymer-crosslinking systems studied is correlated to the critical overlap concentration (). A strong case is presented for the ability to crosslink at low concentrations is a strong function of the polymer type and a weak function of the crosslinker type. Introduction Water-soluble polymers have been used for a number of years as thickening agents for stimulation fluids. Crosslinking was developed to improve the performance of these materials without increasing polymer concentration. Over the years, a number of different crosslinking agents have been used with success. There are several good discussions of polymer and crosslinking systems available (Economides and Nolte 1989; Gidley et al. 1989), and it is not the purpose of this paper to expand these discussions. Rather, we will approach the problem of crosslinking from the prospective of the molecular or solution properties that control or influence crosslinking. When a water-soluble polymer is hydrated, the viscosity of the resulting solution increases as a function of concentration. Starting at low concentrations and building to high concentrations, the viscosity appears to exhibit an exponential increase. This phenomenon has been studied for a wide range of polymer—solvent systems and seems to be universal. Early work divided the viscosity—concentration curve into two regions (Menjivar 1986; Robinson et al. 1982) that were separated at a critical concentration labeled c*. As the understanding of polymer solution behavior progressed and more sensitive instruments and experimental techniques were developed, the solution behavior was determined to be more complex (Rubinstein and Colby 2003).

Process Development for Antioxidant Extraction from Wet Pomegranate Peel

2021 ◽  
Vol 64 (1) ◽  
pp. 191-202
Author(s):  
Xingzhu Wu ◽  
Chandrasekar Venkitasamy ◽  
Tara McHugh ◽  
Zhongli Pan
Keyword(s):  
Antioxidant Activity ◽  
Animal Feed ◽  
Water Soluble ◽  
Total Phenolic ◽  
Solvent Ratio ◽  
List Type ◽  
Pomegranate Peel ◽  
Important Indicator ◽  
Extract Yield ◽  
Water As Solvent

HighlightsA novel process for antioxidant extraction from wet pomegranate peel (WPP) was developed using water as solvent.Effects of extraction parameters on extract yield, quality, composition, and color were quantified.Extraction from WPP achieved 10% higher extract yield compared with dried peel.The WPP extraction process is more energy-efficient than extraction from dried peel.Abstract. Pomegranate peel (PP) is underused as animal feed or discarded in landfills, causing environmental pollution, even though it has a unique polyphenol profile with health-promoting properties. Past research has focused on the potential utilization of dried pomegranate peel (DPP), involving extended processing time, energy usage, and potential quality loss. The objective of this study was to develop a process to extract water-soluble antioxidants from wet pomegranate peel (WPP) and compare its antioxidant attributes with that of DPP. The WPP was sliced and ground into two sizes, and phenolics were extracted in water at different temperatures (20°C, 30°C, 40°C, 50°C, and 60°C), solvent (water) ratios (1:1, 2:1, 4:1, 6:1, and 8:1), and extraction times (2, 3, 4, 5, and 6 min). WPP extraction was compared with DPP extraction using hot air (HA, 40°C) and infrared radiation (IR, 60°C). The total phenolic yield (TPY) from WPP ranged from 10.37% to 12.80%, and the extraction rate increased significantly with increasing extraction time, temperature, and solvent ratio. DPPH scavenging activity (DSA), an important indicator of antioxidant activity, was in the range of 5.366 to 6.591 g g-1 and decreased only with the increase in temperature. Extraction using WPP particles resulted in 10% more extract yield and 2.5% more TPY compared to DPP powders with similar DSA. This study demonstrated that WPP could be used for the extraction of phenolic compounds with high antioxidant activity and without energy-intensive drying. Keywords: . Infrared drying, Peel composition, Polyphenol, Principal component analysis, Wet pomegranate peel.

Techno-biofunctional aspect of seasoning powder from farm-raised sago palm weevil (Rhynchophorus ferrugineus) larvae

2020 ◽  
pp. 1-10
Author(s):  
M. Chaijan ◽  
W. Panpipat
Keyword(s):  
Phenolic Content ◽  
Acetone Extract ◽  
Water Soluble ◽  
Total Phenolic ◽  
Rhynchophorus Ferrugineus ◽  
Food Ingredient ◽  
Sago Palm ◽  
Palm Weevil ◽  
Calcium Magnesium ◽  
Different Content

This study aimed at characterising the techno-biofunctional aspect of seasoning powder made from sago palm weevil larvae (SP) in comparison with commercial products prepared from pork (CP) and chicken (CC). SP had a comparable moisture and water activity with CP and CC, following the Thai Community Product Standards. SP had higher protein, fat, carbohydrate, calcium, magnesium and potassium with lower ash and sodium (P<0.05). All samples had the same Fourier transform infrared spectra with different peak intensities. SP was darker (lower L*, higher a* and b*, and lower whiteness) than CP and CC. Different content and polarity of the intermediate (A285) and final (A420) products of the Maillard reaction was found. A420 of the aqueous extract was distinctly higher than the acetone extract in all samples, suggesting the predominance of water soluble brown pigments. The highest total phenolic content and DPPH• inhibition was found in SP (P<0.05). The bulk density of SP was lower than CP and CC, which consequently affected the wettability. SP needed more time to become wet (P<0.05). The soup made from SP had the highest initial turbidity (P<0.05). All sensory aspects of SP were similar to CP and CC. Thus, SP can be categorised as an alternative functional food ingredient.

A Resorcinol-Formaldehyde Resin as an Embedding Material for Electron Microscopy of Membranes

1969 ◽  
Vol 27 ◽  
pp. 328-329 ◽  
Author(s):  
J. G. Robertson ◽  
D. F. Parsons
Keyword(s):  
Electron Microscopy ◽  
Osmium Tetroxide ◽  
Neutral Lipids ◽  
Lipid Extraction ◽  
Water Soluble ◽  
Formaldehyde Resin ◽  
Electron Microscope Autoradiography ◽  
Resorcinol Formaldehyde ◽  
Major Disadvantage ◽  
Cell Organization

The extraction of lipids from tissues during fixation and embedding for electron microscopy is widely recognized as a source of possible artifact, especially at the membrane level of cell organization. Lipid extraction is also a major disadvantage in electron microscope autoradiography of radioactive lipids, as in studies of the uptake of radioactive fatty acids by intestinal slices. Retention of lipids by fixation with osmium tetroxide is generally limited to glycolipids, phospholipids and highly unsaturated neutral lipids. Saturated neutral lipids and sterols tend to be easily extracted by organic dehydrating reagents prior to embedding. Retention of the more saturated lipids in embedded tissue might be achieved by developing new cross-linking reagents, by the use of highly water soluble embedding materials or by working at very low temperatures.

Ferritin Labeled Antibody Staining of Thin Sections

1969 ◽  
Vol 27 ◽  
pp. 420-421
Author(s):  
J. D. McLean ◽  
S. J. Singer
Keyword(s):  
Biological Material ◽  
Water Soluble ◽  
Thin Sections ◽  
Antibody Staining ◽  
Thin Sectioning ◽  
Ultrathin Sections

The successful application of ferritin labeled antibodies (F-A) to ultrathin sections of biological material has been hampered by two main difficulties. Firstly the normally used procedures for the preparation of material for thin sectioning often result in a loss of antigenicity. Secondly the polymers employed for embedding may non-specifically absorb the F-A. Our earlier use of cross-linked polyampholytes as embedding media partially overcame these problems. However the water-soluble monomers used for this method still extract many lipids from the material.

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