Academic literature on the topic 'Surface modified pigments'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Surface modified pigments.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Surface modified pigments"
1
Hájková, T., and A. Kalendová. "The anticorrosion properties of pigments based on molybdates and tungstates surface-modified with conducting polymers." Koroze a ochrana materialu 61, no. 1 (March 1, 2017): 7–18. http://dx.doi.org/10.1515/kom-2017-0001.
Full textAbstract:
Abstract The objective of this work was to examine the properties of molybdate or tungstate based pigments whose surface has been coated with a conductive polymer, viz. either polyaniline phosphate (PANI) or polypyrrole phosphate (PPY), if used as pigments in organic coating materials. The anticorrosion pigments were prepared by high-temperature solid-state synthesis from the respective oxides, carbonates. The composite pigments (pigment/conductive polymer) were dispersed in a solvent-type epoxy-ester resin binder to obtain a series of paints whose anticorrosion properties were assessed by means of corrosion tests in accelerated corrosion test and by the linear polarisation method. Focus was on the anticorrosion properties of the paints depending on the pigment surface treatment, initial pigment composition, and pigment volume concentration (PVC) in the paint. The surface-treated pigment particles were expected to have a favourable effect on the anticorrosion and the mechanical properties of epoxy-ester resin based paints.
2
Zhang, Yong, Xuening Fei, Lu Yu, Lingyun Cao, and Baolian Zhang. "Preparation and characterisation of silica supported organic hybrid pigments." Pigment & Resin Technology 43, no. 6 (November 3, 2014): 325–31. http://dx.doi.org/10.1108/prt-10-2013-0087.
Full textAbstract:
Purpose The purpose of the work reported in this paper is to prepare hybrid pigments fabricated by depositing pigment yellow 12 (PY12) on the surface of silica gel to improve the application performance of the resulting pigments. The particle size distribution, optical properties, thermal stability, water dispersibility and flowability of the pigments with and without silica gel modification were studied. Design/methodology/approach The hybrid pigments were synthesised with different amount of silica gel. The modified pigments were characterised by Fourier transforms infrared spectroscopy, X-ray diffraction, thermal analysis, scanning electron microscopy and transmission electron microscopy. Findings The particle size distribution of the modified pigments was found to have been altered significantly. This can be explained by the interaction between pigments and silica gel, which prevented self-aggregation of pigment particles and hence improved the properties of pigments. Research limitations/implications Only silica supports and pigment yellow 12 were evaluated. Other pigments could also be studied. Practical implications Modification of pigment particles with smaller particle size can increase the efficiency of the modified pigment, in terms of colour shade and tinting strength, due to better particle size distribution. Originality/value The paper demonstrates that inorganic core can prevent self-aggregation of pigment particles, and the application properties of such pigment depend on the resulting degree of dispersion of pigment particles.
3
Sun, Cui, Bao Zhang, Xiang Gao Li, and Ya Qing Feng. "Synthesis and Characterization of Surface Modified Red Pigment 48:2 for Electrophoretic Display." Advanced Materials Research 683 (April 2013): 73–76. http://dx.doi.org/10.4028/www.scientific.net/amr.683.73.
Full textAbstract:
Red Pigment 48:2 (PR 48:2) was coated with polyethylene (PE). The chemical constitution of the modified pigments was identified by fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM) and field-emission scanning electron microscopy (FE-SEM). The modified particles have good dispersity and high electrophoretic mobilities. For a simple EPD device, the contrast ratio of red-white electrophoretic fluid reached 2.60.
4
M. Ahmed, Nivin, Walaa M. Abd El-Gawad, Elham A. Youssef, and Eglal M. Souaya. "Employment of new modified ferrite pigments in anticorrosive alkyd-based paints." Pigment & Resin Technology 43, no. 4 (July 1, 2014): 201–11. http://dx.doi.org/10.1108/prt-10-2013-0106.
Full textAbstract:
Purpose – The purpose of this work is to prepare new core-shell pigments based on silca fume waste as core and ferrite pigments in the shell. Silica fume is a byproduct of the smelting process in the ferrosilicon industry. The reduction of high-purity quartz to silicon at temperatures up to 2,000°C produces SiO2 vapours which then oxidize and condense at low-temperature zones to tonnage amounts of tiny particles consisting of non-crystalline silica that is collected and sold rather than being land-filled because nowadays there is increasing environmental concern with regard to excessive volumes of solid waste hazards accumulation. Silica has no direct effect in protecting metals from corrosion, but on precipitating an effective anticorrosive pigment like ferrite on its surface with low concentrations, this can bring out new core-shell pigment with good anticorrosive performance and low cost. The new pigments will be constructed on a waste silica fume core comprising 80-85 per cent of its chemical structure and the ferrite shell that will be only about 20-15 per cent. These pigments are represented as efficient, economically feasible and eco-friendly. Design/methodology/approach – The different ferrites and ferrites/SiO2 pigments were characterized using different analytical and spectro-photometric techniques, such as X-ray diffraction, scanning electron microscopy/energy-dispersive X-ray and transmission electron microscopy (TEM). Evaluation of these pigments was done using international standard testing methods american standard testing methods (ASTM). After evaluation, the pigments were incorporated in solvent-based paint formulations based on medium oil-modified soya-bean-dehydrated castor oil alkyd resin. The physico-mechanical properties of dry films and their corrosion properties using accelerated laboratory test in 3.5 per cent sodium chloride for 28 days were determined. Findings – The results of this work revealed that ferrite/SiO2 core-shell pigments were close in their performance to that of the ferrite pigments in protection of steel, and at the same time, they verified good physico-mechanical properties. Practical implications – As silica fume has a large array of uses, these pigments can be applied in various industries such as painting, wooding coating, anti-corruption coating, powder coating, architectural paint and waterproof paints. Originality/value – Ferrite, ferrite/SiO2 are environmentally friendly pigments which can impart high anticorrosive behaviour to paint films with concomitant cost savings.
5
Kalendová, A., E. Halecká, K. Nechvílová, and M. Kohl. "Anticorrosive efficiency of alkyd resin-based coatings containing Mg–Zn–Fe mixed oxide-based pigments." Koroze a ochrana materialu 61, no. 2 (April 1, 2017): 39–53. http://dx.doi.org/10.1515/kom-2017-0005.
Full textAbstract:
Abstract Mixed oxide-based pigments Mg–Zn–Fe with different particle morphologies were prepared by high-temperature solid phase reactions. The core shell pigments containing ferric oxide and non-isometric particles of layered silicates were also prepared. The pigments were tested in paints, the pigment volume concentrations in the modified alkyd resin based binder being 5%, 10%, and 15%. The paint properties were examined by accelerated corrosion tests and by physico-mechanical tests. The effect of the pigment particle morphology on the surface hardness of the paint films was also studied. The influence of pigment volume concentration on the coating properties, and the optimum concentrations providing the most efficient anticorrosive protection were processed. A higher anticorrosion efficiency was observed for the paints with pigments possessing the lamellar particle shape.
6
Aranzabe, Estíbaliz, Miren Blanco, Amaia M. Goitandia, Karmele Vidal, María Casado, and Jose Cubillo. "Preparation and characterisation of photocatalytic pigments for architectural mortar based on ultramarine blue." Journal of Sol-Gel Science and Technology 93, no. 3 (September 11, 2019): 714–21. http://dx.doi.org/10.1007/s10971-019-05116-x.
Full textAbstract:
Abstract Architectural mortar is used in the building sector when aesthetic surface value is required and therefore, these surfaces present a great potential to be used as a solution for the reduction of atmospheric pollution. In the present work, an inorganic ultramarine blue pigment has been modified to provide the mortars with colour and photocatalytic properties, simultaneously. To modify the pigment, a sol–gel coating based on titanium n-butoxide precursor has been applied on its surface. The influence of different parameters affecting the coating formation, such as the pH and titanium weight content of the sol–gel reactants, has been studied. Moreover, the formation of a coating on the pigment’s surface with several amounts of TiO2 anatase nanoparticles has also been explored. A pigment with better photocatalytic properties has been obtained at pH = 12 applying a coating based on titanium n-butoxide precursors (Ti precursor/pigment weight ratio = 0.5) with 2 wt.% of titania anatase nanoparticles, maintaining the original pigment colour. Moreover, mortars with the new pigment present higher flexural strength and similar compressive strengths than non-modified mortars ensuring the applicability of the pigment in the building sector.
7
Jiao, Li Yong, Yu Bin Zheng, Ya Jun Liu, Xiao Min Ji, and Lin Lin Li. "Surface Modification of the Light-Storing Pigment by Titanate Coupling Agent and its Application on Print Ink." Applied Mechanics and Materials 200 (October 2012): 708–11. http://dx.doi.org/10.4028/www.scientific.net/amm.200.708.
Full textAbstract:
A titanate coupling agent, TM-27, was used in surface modification of light-storing pigment to improve its compatibility and stability with the organic system. The surface characteristics of light-storing pigments were reflected by Fourier transform infrared spectroscopy (FT-IR) and scanning electron micrograph (SEM). The result showed that the titanate coupling agent molecular formed a thin layer and binded strongly on the surface of pigments. The modification effect was evaluated on the basis of turbidity and by plotting the afterglow decay curve. The application of light-storing pigment in the printing ink system was also examined. When the dosage of titanate coupling agent was 1.5%, the viscosity of printing ink reached the lowest point. The subsidence rate was reduced from 0.8202 ml/h to 0.5821 ml/h. These results indicated that the modified light-storing pigment had better compatibility and stability with the organic system, and the surface modification did not affect the luminescence properties.
8
Sun, Sijia, Hao Ding, Yanpeng Zha, Wanting Chen, and Zhuoqun Xu. "Surface Organic Modification of CaCO3-TiO2 Composite Pigment." Minerals 9, no. 2 (February 15, 2019): 112. http://dx.doi.org/10.3390/min9020112.
Full textAbstract:
To improve the properties and dispersibility of CaCO3-TiO2 composite pigments (CaCO3-TiO2) in organic matrices, the surface modification of CaCO3-TiO2 was performed with sodium stearate (SS) as an organic modifier by wet ultra-fine grinding in a stirred mill. The pigment properties of modified CaCO3-TiO2 and its dispersibility in organic media were tested and characterized. The binding mechanism between CaCO3-TiO2 and SS was explored by infrared spectrometry (IR) and X-ray photoelectron energy spectroscopy (XPS). The results showed that the mechanical grinding strength and SS dosage had a significant effect on the activation index and sedimentation rate of CaCO3-TiO2. After surface modification, the surface of CaCO3-TiO2 turned from a hydrophilic surface to a hydrophobic surface and the surface free energy was reduced. In addition, the hiding property and dispersibility of CaCO3-TiO2 in the organic medium were significantly improved. IR and XPS results indicated that the modifier SS was adsorbed on the surface of CaCO3-TiO2 by chemical combination.
9
Zhang, Baolian, Zhenzhen Zhang, Xuening Fei, Yingchun Gu, and Lu Yu. "Preparation and properties of C.I. Pigment Red 170 modified with silica fume." Pigment & Resin Technology 45, no. 3 (May 3, 2016): 141–48. http://dx.doi.org/10.1108/prt-01-2015-0013.
Full textAbstract:
Purpose The purpose of the study reported in this paper was to prepare modified C.I. Pigment Red (PR) 170 to reduce production cost and improve application performance. The structure of the modified pigment was characterised. The colour strength, thermal stability, mobility, aqueous dispersability and ultraviolet (UV) resistance of modified pigments were studied. Design/methodology/approach Silica fume was added into the diazonium salt solution under acidic condition, followed by the activation to generate new surface. Subsequently, coupling component was dropwise added to the system to form the modified pigments evenly on the surface of silica fume in situ. The structure and properties of the modified pigment were studied by fourier transform infrared spectoscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermal gravity analysis (TG-DTA), UV-visible diffuse reflectance spectra (UV-Vis DRS), and commission internationale de L‘Eclairage (CIE L*a*b*) colour measurements. Findings The morphology and particle size of the modified pigment were controlled by the modification of the silica fume, and the organic pigment and silica fume formed a core–shell structure. The properties of the modified pigment including colour strength, thermal stability, mobility, aqueous dispensability and UV resistance were improved significantly. Research limitations/implications The effect of the amount of silica fume on the thickness of the organic pigment layer and the effect of the thickness of the organic pigment layer on the properties of the modified pigment need to be studied further. Practical implications This paper shows a feasible method of the modification of the PR170 with the silica fume, and the modification can improve the properties of the PR170. The use of silica fume to modify organic pigment can realise the reuse of solid waste and reduce the production cost of the organic pigment. Social implications This modification method of the organic pigment is adaptive and it can be adjusted to the modification of other species of the organic pigment. Originality/value The modification of the PR170 with the silica fume was carried out in its preparation process, which synchronised the preparation and modification of the organic pigment. The properties of the modified pigment were improved, which were beneficial for their application in inks and coatings.
10
Jiang, Wei Hui, Yong Feng, Jian Min Liu, Qing Xia Zhu, and Xia Yi Xu. "Preparation of ZrSiO4/C Inclusion Pigments by Nonhydrolytic Sol-Gel Methed Combined with the Process of Carbon Black Modification." Materials Science Forum 745-746 (February 2013): 545–50. http://dx.doi.org/10.4028/www.scientific.net/msf.745-746.545.
Full textAbstract:
nclusion pigments of ZrSiO4/C were prepared by nonhydrolytic sol-gel (NHSG) method combined with the process of carbon black modification. The crystalline phases, microstructure, functional groups on the surface of carbon black and chromatic value of the pigments were characterized by XRD, TEM, FTIR and Colorimeter, respectively. The surface structural changes of the carbon black modified by nitric acid and the influences of process parameters on the chromatic value of the pigments were also investigated. The results show that the process of carbon black modification enhances the affinity and binding force between carbon black and ZrCl4 sol, which contributes to improve the effect of carbon black wrapped by ZrSiO4. The ZrSiO4/C inclusion pigment were obtained after calcining at 1000 °C for 8 h, and the L*, a* and b* value is 53.88, 0.74, and 1.88, respectively.
Dissertations / Theses on the topic "Surface modified pigments"
1
Momin, Nasar, and nasarhm@gmail com. "Chitosan and improved pigment ink jet printing on textiles." RMIT University. Fashion and Textiles, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20081029.154501.
Full textAbstract:
The purpose of this research was to explore two ways of the application of chitosan, a biopolymer, for ink jet printing of textiles. 1) To apply chitosan as a post-treatment on the fabric ink jet printed with pigment based inks for the fixation of pigments on the fabric. 2) To incorporate chitosan as a binder in pigment based ink jet ink formulations. The incorporation of chitosan was carried out in two ways. 1) Direct addition of chitosan into the ink formulations containing surface modified pigments. 2) Preparation of chitosan encapsulated pigment nanoparticles using complex coacervation technique and using these nanoparticles for the formulation of ink jet ink. The degree of deacetylation (DD) was determined using FTIR spectroscopy. Various protocols proposed by researchers were used to determine the DD of chitosan samples used in the present study. The protocol proposed by Raut was found to be fairly accurate in determining the DD of chitosan samples. The molecular weight of chitosan was estimated using dilute solution viscometry method. The characterisation of the film forming ability of chitosan was evaluated using scanning electron microscopy (SEM). The colour strength (K/S), colour difference, colour characteristics and colour fastness to laundering and rubbing of ink jet printed fabrics post treated with chitosan were evaluated using standard methods. Post-treatment (pad-dry-cure method) of cotton fabric ink jet printed with pigment based inks revealed that chitosan could effectively fix the pigments on cotton compared to the commercial textile binders and the water-soluble derivative of chitosan. The chemical interaction between chitosan and cotton fabric was illustrated by FTIR-ATR analysis and through determination of carboxyl group content. The ink jet printed cotton fabric post treated with 3gpl chitosan (MW 156,156) maintained almost 86% of bacterial reduction against Klebsiella Pneumoniae even after 50 launderings. Inks containing chitosan were formulated and were found to be stable in terms of mean particle size and viscosity over a period of one month and for 4 freeze/thaw cycles. A magenta ink containing chitosan was selected for ink jet printing of cotton fabric. It was found that the DF was around 97% for magenta ink containing chitosan compared to around 53% fixation for magenta ink without chitosan on cotton fabric. Surface modified carbon black pigment with carboxylated (COO-) surface functionality was selected to prepare chitosan encapsulated pigment nanoparticles by complex coacervation technique. Chitosan encapsulated pigment nanoparticles with mean particle size diameter of 876 nm and 742 nm were formed when 5 ml of 0.1% w/v pigment was mixed with 2ml and 3ml of 0.1% w/v chitosan, respectively. However, no correlation was found between the particle size of the nanoparticles formed and the concentration of chitosan. The DF with ink containing chitosan encapsulated pigment nanoparticles was found to be around 98% while the blank ink with only surface modified carbon black pigment showed 44% fixation.
2
年申 and Shen Nian. "In vitro and in vivo evaluation of iris pigment epithelial cells cultured on surface modified expanded-polytetrafluorethylene substrates as a potential therapeutic strategy for retinal degeneration." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/193403.
Full textAbstract:
Retinal degenerative diseases are diseases that may severely affect vision of people at different ages. These include retinitis pigmentosa (RP) and age-related macular degeneration (AMD). The current treatments for these diseases are limited. Since dysfunction and atrophy of the RPE are the key factors in the development of retinal degenerative diseases, transplantation of healthy retinal pigment epithelial (RPE) cells might be a promising therapeutic strategy. However, homologous RPE cells may lead to host immune rejection and harvesting autologous RPE cells may cause severe complications. Autologous iris pigment epithelial (IPE) cells, which are relatively easy to obtain, possess the same embryonic origin and share similar characteristics as RPE cells. Therefore, they may be used as a substitute of RPE cells for transplantation. Increasing interests have been demonstrated with the use of substrate to support cell attachment, proliferation and differentiation, so that transplanted cells could maintain the differentiated phenotype and perform their normal functions. However, degradation of biodegradable substrates may cause the breakdown of functional cell monolayer and produce toxic byproducts. Therefore, the aim of current study is to investigate the in vitro characteristics of rat IPE cells cultured on surface modified non-degradable expanded-polytetrafluorethylene (ePTFE) substrates and host response to the substrates without cells.
Primary pure IPE cells were successfully isolated from rat eyes, which provided abundant cells for subsequent experiments. IPE cells harvested from both Long Evans rats and Dark Agouti rats proliferated and reached confluence on fibronectin coated n-heptylamine modified (F-HA) ePTFE substrates. These cells exhibited cuboidal or polygonal morphology with heavy pigmentation. In addition to the typical epithelial cell morphology, rat IPE cells grown on F-HA ePTFE substrates were able to form a cell monolayer with functional formation of tight junctional complex between neighboring cells. The IPE cell monolayers also demonstrated increased phagocytosis of photoreceptor outer segments (POS) with time and expression of cellular retinylaldehyde-binding protein (CRALBP) that served an important role in the conversion of all-trans-retinal to 11-cis-retinal in visual cycle.
In the in vivo study, F-HA ePTFE substrate was successfully transplanted into the subretinal space of Royal College of Surgeons (RCS) rat, which is a well-recognized animal model of retinal degeneration. The F-HA ePTFE substrate remained flat up to 4 weeks after transplantation and did not induce significant up-regulation of pro-inflammatory cytokines TNFα and IL1β as well as activation of Müller cells and astrocytes which occurred in response to retinal inflammation.
In conclusion, rat IPE cells that were grown on F-HA ePTFE substrate were able to establish a monolayer with functional tight junctions and RPE-specific functions. The F-HA ePTFE substrate demonstrated good biocompatibility in the subretinal space of RCS rats. These findings provide a potential therapeutic strategy for retinal degeneration.published_or_final_version
Anatomy
Doctoral
Doctor of Philosophy
Book chapters on the topic "Surface modified pigments"
1
Clarke, J. B. "Rheology modifiers and pigment dispersants." In Surface Application of Paper Chemicals, 109–28. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1457-5_6.
Full text
2
Eisenbach, C. D., Ch Schaller, T. Schauer, and K. Dirnberger. "Pigment-Polyelectrolyte Interaction and Surface Modified Particle Characterization by Electrokinetic Sonic Amplitude Measurements." In ACS Symposium Series, 215–29. Washington, DC: American Chemical Society, 2004. http://dx.doi.org/10.1021/bk-2004-0881.ch014.
Full text
3
Agougui, Hassen, Youssef Guesmi, and Mahjoub Jabli. "Preparation of Functionalized Hydroxyapatite with Biopolymers as Efficient Adsorbents of Methylene Blue." In Dyes and Pigments - Novel Applications and Waste Treatment. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95347.
Full textAbstract:
In this study, we reported the synthesis of hydroxyapatite modified with biopolymers as λ-carrageenan and sodium alginate, which could be used as effective adsorbents of cationic dyes. Evidence of chemical modification was proved through chemical analysis, Fourier Trans-form Infrared spectroscopy, powder X-ray diffraction, scanning electron microscopy, and specific surface area. The adsorption process was studied using methylene blue as representative cationic dye. The adsorbed quantity reached, at equilibrium, 142.85 mg/g and 98.23 mg/g using hydroxyapatite-sodium alginate and hydroxyapatite-(λ-carrageenan), respectively. However, it does not exceed 58.8 mg/g in the case of the unmodified hydroxyapatite. The adsorption of methylene blue using hybrid materials complied well with the pseudo-second-order suggesting a chemi-sorption. Freundlich and Langmuir isotherm described well the adsorption mechanism of the hydroxyapatite-(λ-carrageenan) and hydroxyapatite-sodium alginate, respectively. The high capacities of MB removal obtained in this study suggest the potential use of these materials in the treatment from wastewaters.
4
Kalendová, Andréa, Tereza Hájková, Miroslav Kohl, and Jaroslav Stejskal. "Properties of Metal Oxide Pigments Surface Modified with Polyaniline Phosphate and Polypyrrole Phosphate in Corrosion Protective Organic Coatings." In Conducting Polymers. InTech, 2016. http://dx.doi.org/10.5772/63290.
Full textConference papers on the topic "Surface modified pigments"
1
Karlovits, Igor, and Gregor Lavrič. "Paper surface efficiency and inkjet colour reproduction on invasive and agro residue papers." In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p17.
Full textAbstract:
Paper surface efficiency was developed by Preucil and was intended to define the colourimetry and geometrical part of the light reflection with paper surface values. The surface characteristics of paper, primarily its roughness and absorptivity affect colour reproduction beside the ink pigments or dye. Rougher paper surfaces scatter the light in a more non-uniform manner while paper absorption may cause ink vehicle absorption and thus decreasing gloss, or it may absorb both vehicles and pigment-producing an unexpected colour shift. The formula was upgraded with paper whiteness values as the basic formula did not explain the whole phenomena. These paper properties were the foundation of the paper standardisation for standardised printing. On the other hand, during inkjet printing, a limited amount of liquid is deposited onto a paper surface. When the droplet hits the surface, it starts to spread and wet the surface depending on the ink and paper properties and had different colourant deposition from the formulas used mainly for offset printing inks. In this paper, we have researched the modified surface efficiency formula applied to inkjet printing (HP PageWide Pro 477dw) on invasive and agro-residue papers with specific non-white paper shades. We have measured the dynamic liquid penetration using ultrasound measurement to model the surface behaviour of the inks and measured CIE LCH values of the samples and calculated the CIE ΔE00 colour differences and the influence of paper surface efficiency and paper shade influence on the colour reproduction. The results indicate that using recalculated Cobb Absorption values gives good negative linear correlation with the original formula regarding the magnitude of colour difference.
2
Yao, Zeng-Yu, and Jian-Hua Qi. "Synthesis of Chestnut-Shell-Pigment-Modified Polyacrylamide Superabsorbent Optimized by Response Surface Methodology." In 2nd Annual International Conference on Advanced Material Engineering (AME 2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/ame-16.2016.150.
Full text
3
Bondaryeva, Аnna, and Оlena Mokrousova. "The acrylic/montmorillonite nanocomposites for leather finishing." In The 8th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2020. http://dx.doi.org/10.24264/icams-2020.i.3.
Full textAbstract:
Leather finishing is carried out by application of coatings that include polymer, pigment, solvents and any auxiliary products. The acrylic resins are employed in leather finishing to produce polymer film to create a uniform protective coating on the leather surface. To increase the operational properties of the polymer coating for leather finishing, it is proposed to use nanocomposites based on acrylic resin and modified dispersions of montmorillonite (AMC). The introduction of montmorillonite allows the polymer to be structured and provides improved physical and mechanical indexes of the leather coating. Acrylic polymers and colored modified dispersions of montmorillonite (CMDM) were used for the study. The colored montmorillonite was obtained by treating water dispersions of montmorillonite by sodium carbonate, basic chromium sulfate and anionic dyes. The AMC contained 1.5–2.0% montmorillonite of the dry polymer residues. The use of AMC enhances the physical and mechanical properties of the leather coating. It is shown that the use of temperature at 60°C for the formation of finishing coating enhances the structuring of the polymer matrix, which is confirmed by the 40 % increase in the tensile strength of films and the 10 % reduction in relative elongation at break.