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  1. 24 Fibres & Textiles in Eastern Europe
  2. 12 Autex Research Journal
  3. 6 Polymer Processing
  4. 6 Przetwórstwo Tworzyw
  5. 5 Polish Journal of Chemical Technology
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  1. 2 2023
  2. 3 2022
  3. 1 2021
  4. 1 2020
  5. 5 2019
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  1. 3 Zimniewska M.
  2. 2 Bedla D.
  3. 2 Bogdał D.
  4. 2 Dacewicz E.
  5. 2 Djeghader D.
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1
Content available Chemical purity of new segmented polyester biomaterials
100%
Piegat A. , Walenia M. , El Fray M.
Engineering of Biomaterials
|
2014
|
tom Vol. 17, no. 128-129
83--85
2
Content available remote Synteza nienasyconych poliestrów w warunkach mikrofalowych
100%
Pielichowski J. , Bogdał D. , Wolf E.
Przemysł Chemiczny
|
2003
|
tom T. 82, nr 8-9
938-939
3
Content available A novel biobased polyester plasticizer prepared from palm oil and its plasticizing effect on poly (vinyl chloride)
88%
Jia P. , Zhang M. , Hu L. , Zhou Y.
Polish Journal of Chemical Technology
|
2016
|
tom Vol. 18, nr 1
9--14
EN
In this study, palm oil was the first time to convert into a novel polyester plasticizer for polyvinyl chloride (PVC). In the first stage, palm oil was converted into palm oil monoglyceride (POM) by alcoholysis with glycerol. Next, a novel palm oil monoglycerides based polyester plasticizer (POMP) was synthesized from POM and maleic anhydride through esterification and condensation reaction. The structure of POMP was characterized with FTIR, 1H NMR and GPC. Then PVC blends were prepared using POMP as a plasticizer, melting behavior, thermal property, compatibility, mechanical properties and mechanism of plasticization of PVC blends were systematically studied. Melting behavior indicated that POMP could decrease the torque and the melt viscosity of PVC blends that was conducive to process. With the content of POMP increasing from 5 g to 15 g in PVC blends, the plasticized PVC blends demonstrated better compatibility, the degradation temperature (Td) increased from 252.6°C to 257.0°C, the glass transition temperature (Tg) decreased from 55°C to 49.5°C. Plasticization was put into effect by interaction of the electron cloud between the PVC chain and POMP molecule. This study may lead to the development of new type of PVC plasticizer based on vegetable oil.
4
Content available Physical and Mechanical Properties of Cotton/Polyester Based Fibers for Shoe Uppers and Lining Products
88%
Sabyrkhanova S. , Yeldiyar G. , Ork Efendioglu N. , Onem E. , Abzalbekuly B. , Bitlisli B. O.
Fibres & Textiles in Eastern Europe
|
2023
|
tom Vol. 31, no. 3
14--21
EN
The purpose of the study was to evaluate the physical and mechanical properties of various textile materials based on polyester and cotton for shoe uppers and lining. For that purpose, the influence of the ratio of a mixture of cotton and polyester fibers on the quality of the fabric was investigated. As a result, fabrics with the same composition but different yarn numbers differed from each other in specified properties. With an increase in the content of polyester, all specified properties increase except for vapor permeability, which makes it possible to correctly select the composition of fabrics for shoes.
5
Content available Synthesis of a polyester plasticizer from rubber seed oil for polyvinyl chloride
88%
Li H. , Wang X. , Chu H. , Yao X.
Polish Journal of Chemical Technology
|
2022
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tom Vol. 24, nr 4
1--6
EN
A polyester plasticizer (RSOP) for polyvinyl chloride based on rubber seed oil (RSO) was synthesized. Firstly, RSO monoglyceride were synthesized by the transesterifi cation of RSO with glycerol at 220–240 °C. Secondly, RSOP was synthesized from RSO monoglyceride and adipic acid by esterification. The polyester plasticizer was characterized by GPC, FT-IR, 1H NMR and DSC. Plasticized polyvinyl chloride (PVC) materials with RSOP and dioctyl phthalate (DOP) in varying ratios were prepared via thermal melting process, RSOP was used as a second plasticizer. The properties of the plasticized PVC materials were characterized by a universal testing machine, TGA, DMA and solvent extraction resistance. The obtained PVC materials showed improved thermal stability and lower glass transition temperature than PVC. Solvent extraction resistance and plasticization of plasticized PVC were also improved. This study provides a new strategy for preparing bio-based polyester plasticizer from RSO.
6
Content available remote The influence of pH adjusted with different acids on the dyeability of polyester fabric
88%
Miljkovic M. N. , Djordjevic D. M. , Miljkovic V. M. , Stamenkovic M. , Stepanovic J.
Polish Journal of Chemical Technology
|
2014
|
tom 16
|
nr 4
1-5
EN
The influence of using formic, oxalic, citric, tartaric, hydrochloric, nitric, sulphuric and phosphoric acid for dyebath pH adjustment was investigated upon the dyeing of polyester fabric with CI Disperse Yellow 60. The positions of colour in CIELab coordinates of the samples dyed with the addition of tested acids were assessed and compared to those dyed with the addition of acetic acid. It was found that the differences in dyeabilities obtained with the addition of citric, oxalic, hydrochloric, nitric and sulphuric acid are entirely acceptable according to both M&S 83A and CMC (2:1) standards in comparison to the dyeability obtained with the addition of acetic acid.
7
Content available Study of the Tensile and Bending Stiffness Behavior of Antistatic and Antibacterial Knitted Fabrics
75%
Asfand N. , Daukantienė V.
Fibres & Textiles in Eastern Europe
|
2023
|
tom Vol. 31, no. 3
37--45
EN
The influence of fabric treatments, fabric structure and yarn composition on the strength, elasticity and bending stiffness behawior of developed antistatic knitted fabrics was investigated for daily wear clothing. 1x1 rib knit fabrics showed higher elongation and strength than half-Milano rib knit fabrics, with high elongation in the wale direction of the fabrics. An increase in antistatic poliester content causes an increase in the tensile strength of the fabrics. Fabric treatments were found to be highly influential with respect to the properties of the knitted fabrics developed. Dyed and softened fabrics showed lower stiffness, while the antibacterial finished group showed increased bending stiffness.
8
Content available remote Fatigue life prediction of glass reinforced composite materials using Weibull distribution
75%
Djeghader D. , Redjel B.
Composites Theory and Practice
|
2019
|
tom R. 19, nr 3
100-106
EN
Cyclic bending fatigue tests were conducted on randomly oriented short multidirectional glass fiber-reinforced polyester matrices. Standard test specimens were manufactured in rectangles with a volume fraction of 40% glass fibers. The experimental fatigue life results were fitted using S-N curves, which are based on power function equations. S-N curves, which are characterized by important and significant scatter over the lifetime, were correlated using the two-parameter Weibull distribution function to determine the probability of failure and to plot the S-N curves at different reliability levels. These curves are of considerable design value in practical applications of composite materials and predict the sample response at the time of service depending on the degree of reliability.
9
Content available remote Multiblokowe elastomery poliestrowe : synteza, struktura, degradacja
75%
Kotowski D. , Ukielski R.
Przetwórstwo Tworzyw
|
2011
|
tom [R.] 17, nr 5
319-323
PL
Otrzymano nową grupę kopolimerów multiblokowych o następującej budowie chemicznej: poli[(tereftalan trimetylenu)-blok-(dimer alkoholu linoleinowego)], w których zmiennym czynnikiem był udział wagowy bloków. Metodami ¹H NMR oraz FTIR potwierdzono zakładaną strukturę chemiczną tych kopolimerów. Materiały poddano procesom degradacji hydrolitycznej w roztworach o pH=4,9; 7; 8,5 oraz degradacji w glebie. Degradację oceniono mierząc zmianę lepkości istotnej polimeru po okresie 8 tygodni.
EN
Received a new group of multiblock copolymers with following chemical structure: poly [(trimethylene terephthalate)-block-(linoleic alcohol dimer)], in which the variable factor was the weight of blocks. Methods: ¹H NMR and FTIR confirmed the assumed chemical structure of this copolymers. Materials were subjected to hydrolytic degradation in solutions of pH: 4,9; 7; 8,5; and degradation in soil. The degradation was neasured by the change of intrinsic viscosity of the polymer after a period of 8 weeks.
10
The formation of polyester-melamine / urethane coatings
75%
Denisova N. , Skopintseva N. , Afanaseva D. , Indeikin E.
Farby i Lakiery
|
2019
|
tom nr 2
30--36
EN
One of the cost-effective ways to significantly influence the coating formation process and the performance of polyester coatings is to use a cross-linking agent containing an isocyanate. Methylated melamine-formaldehyde with a high degree of alkylation (HMMM) and blocked hexamethylene diisocyanate (HDI) were used for polyester resin cross-linking. The influence of cross-linking agents on coating performance and characteristics was studied using Small Amplitude Oscillatory Shear Rheometry (SAOS), Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) techniques. The cross-linking degree of the polyester system containing the mixture of HMMM and HDI was shown to be significantly lower than that of the systems where only one of the cross-linking agents was used. High loss modulus values G" in the system with HMMM as compared to the system with HDI can be explained by a less dense three-dimensional network structure. With the decrease of HMMM and HDI the formation of three-dimensional network starts at a higher temperature. At the same time, when only the hardener content is reduced it leads to the decrease of the cross-linking degree.
PL
Jednym z ekonomicznych sposobów znaczącego wpływu na proces tworzenia powłoki poliestrowej i jej właściwości jest zastosowanie czynnika sieciującego zawierającego izocyjanian. Metylowaną żywicę melaminowo-formaldehydową o wysokim stopniu zalkilowania (HMMM) i blokowany heksametyleno diizocyjanian (HDI) zastosowano do sieciowania żywicy poliestrowej. Wpływ czynnika sieciującego na właściwości powłok był badany wykorzystując rometrię niskoamplitudowych oscylacji ścinających (SAOS), analizę termograwimetrycznej (TGA) i różnicową kalorymetrię skaningową (DSC). Stwierdzono, że stopień usieciowania kompozycji zawierającej HMMM i HDI był zdecydowanie mnniejszy od układu zawierającego tylko jeden czynnik sieciujący. Duża wartość modułu stratności w układzie z HMMM w porównaniu z układem zawierającym HDI wynikała z mniejszej gęstości trówymiarowej sieci. Wraz z malejącą ilością HMMM i HDI, tworzenie się trójwymiarowej sieci rozpoczyna się w wyższej temperaturze i prowadzi do mniejszej gęstości usieciowania.
11
Content available remote New thickening agent based on Aloe vera gel for disperse printing of polyester
75%
El-Zairy E. M. R.
Autex Research Journal
|
2011
|
tom Vol. 11, no. 2
66--70
EN
The technical feasibility of using Aloe vera gel as a new thickener for printing polyester with disperse dyes was examined. The results indicate that the properties of the printed fabric samples (colour strength, K/S, overall fastness properties, handling and sharpness) were dependent on gel concentration, the type and concentration of additive (i.e. urea or citric acid), as well as the fixation conditions using the super-heated steam technique. The optimum conditions for printing polyester fibre with disperse dyes using Aloe vera gel as a thickener were as follows: 30 g/kg disperse dye, 50 g/kg urea, 15 g/kg citric acid, 500 g/kg Aloe vera thickener and 50% drying at 100°C for 3 min followed by steam fixation for 6 min at 180°C.
12
Content available remote Adhesion of Pigmented Surface Finish on MDF Board
75%
Slabejová G. , Šmidriaková M.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2018
|
tom No. 104
566--570
EN
The paper deals with the adhesion of pigmented surface finish intended into interior. The pigmented surface finish was formed as a system of the basic polyester coating material and the top polyurethane coating material. The surface finish was created in two various coating thicknesses on MDF board and on MDF veneered with beech veneer. The coating thicknesses differed in number of coatings of the top coating material. Adhesion of pigmented coating films to MDF board and to MDF veneered with beech veneer was evaluated by pull-off test according to the standard STN EN ISO 4624 Paints and varnishes. Pull-off test for adhesion. The tensile strength on veneered MDF board was higher than on MDF board with the coating film only. The rupture under pull-off test occurred in the surface layers of MDF board on both types of boards. The adhesion was not influenced by the film thickness.
13
Surface modification of polyester reinforcing materials by plasma
75%
Hudec I. , Amir I. , Černák M.
Zeszyty Naukowe Politechniki Poznańskiej. Budowa Maszyn i Zarządzanie Produkcją
|
2010
|
tom Nr 12
97-100
EN
In this work, plasma treatment technique for modification of polyester cords was studied. As result of plasma treatment new morphology of surface layer with different chemical structure and roughness was investigated. These changes may have substantial contribution into increasing of adhesion strength of such treated polyester cords to rubber compound.
PL
Celem pracy było zbadanie wpływu cieczy jonowych na stabilność termiczną i palność gumy. W badaniach wykorzystano następujące ciecze jonowe: tri(pentafluoroetylo)-trifluorofosforan triheksylo(tetradecylo)fosfonowy, tetrafluoroboran l-butylo-2,3-dimetylo-imidazoliowy oraz tri(pentafluoroetylo)trifluorofosforan tetrametylo-amoniowy (Sigma Aldrich), za pomocą których modyfikowano powierzchnię krzemionki, którą następnie napełniano kauczuk, lub spęczniano powierzchnię gumy. Wbrew oczekiwaniom, modyfikacja powierzchni cząstek napełniacza za pomocą cieczy jonowej nie podnosi w istotny sposób stabilności termicznej (T5, T50) ani też wartości wskaźnika tlenowego (Ol) gumy z jego udziałem. Trochę lepiej przedstawia się sytuacja w przypadku powierzchniowej modyfikacji gumy za pomocą cieczy jonowych. Podjęto próby wyjaśnienia tej nieoczekiwanej sytuacji (w literaturze przedmiotu można znaleźć szereg doniesień o uniepalnianiu materiałów, np. drewna, za pomocą cieczy jonowych), badając stopień modyfikacji powierzchni napełniaczy i warstwy wierzchniej gumy oraz morfologię napełnionych wulkanizatów.
14
Content available The inflammatory reaction and the expression of pro- and anti-inflammatory cytokines to a novel polyester-polyurethane aortic prosthesis evaluated in dog sat 6 and 12 months post-implantation
75%
Mālniece A. , Auzāns A. , Mālniece A. , Auzāns A.
|
15
Content available remote Application of short-path thin-film distillation to remove a cyclic ester from a saturated polyester
75%
Kapłon J.
Chemical and Process Engineering
|
2007
|
tom Vol. 28, z. 3
485-491
EN
The results of experimental research concerning removing cyclic ester - lactone from saturated polyester Poles 50/23 have been presented. Short-path, thin-film distillation process was used for removing of lactone from polyester resin, with and without the addition of diethlylene glycol. Fogging tests, determining the tendency for plastic and elastomeric materials to volatize substances which can condense and collect on glass surfaces were made according to DIN 75201. The tests have been made to evaluate materials to be used in automotive or other vehicle interiors. Optimal process parameters which give high product quality were established.
PL
Przedstawiono wyniki badań eksperymentalnych dotyczących usuwania laktonu, cyklicznego estru z poliestru Poles 50/23. Do usuwania laktonu zastosowano proces krótkodrożnej destylacji cienkowar-stwowej, także z dodatkiem glikolu dietylenowego. Produkty destylacji poddano testom na mgławienie, zgodnie normą DIN 75201, określającymi zdolność do uwalniania lotnych substancji z tworzyw sztucznych. Testy te są używane do oceny materiałów używanych we wnętrzach samochodów. Ustalono optymalne parametry procesu, zapewniające uzyskanie produktu o wymaganych właściwościach.
16
Content available remote Varnishes modified with nanoparticles for use in electrical insulation
75%
Górnicka B. , Czołowska B. , Mazurek B. , Zawadzka J. , Górecki L.
Polimery
|
2007
|
tom T. 52, nr 5
367-370
EN
This paper presents the results of investigation of impregnating polyester varnish modified by incorporation of various nanoparticles: fumed nanosilica, nanosilica and titanium dioxide obtained via sol-gel process, zinc oxide or montmorillonite at loading 1-3 wt. %. The compositions have been formulated using various recipes and methods of preparation of nanoparticles. The processing, mechanical, electrical, barrier and thermal properties have been examined for both basic pure varnish and varnish with nanofillers. Improving of dielectric properties (electrical strength, resistance to pulse voltage) of insulating varnishes is possible by incorporation of nanoparticles. Nanofilled varnishes exhibit also the increased thermal endurance, bond strength and smaller susceptibility to water absorption.
PL
Przedstawiono wyniki badań nasycającego poliestrowego lakieru modyfikowanego na drodze wprowadzenia (w ilościach 1-3% mas.) nanocząstek różnych nanonapełniaczy: krzemionki płomieniowej, krzemionki oraz ditlenku tytanu otrzymanych metodą zol-żel, tlenku cynku albo montmorylonitu. Kompozycje zawierały ponadto środki ułatwiające zwilżanie i dyspergowanie nanonapełniaczy oraz substancje sprzyjające odpowietrzaniu. Oceniono właściwości przetwórcze, mechaniczne, elektryczne, barierowe i cieplne lakieru standardowego bądź zmodyfikowanego (tabela 1-3, rys. 1-4). Stwierdzono, że obecność już niewielkich ilości użytych nanonapełniaczy umożliwia poprawę właściwości dielektrycznych (wytrzymałość elektryczna i trwałość w warunkach działania napięcia impulsowego) poliestrowych lakierów elektroizolacyjnych. Lakiery z nanocząstkami wykazują również wzrost (w stosunku do odpowiedniej wartości lakierów nienapełnionych) odporności cieplnej oraz siły wiążącej jak również mniejszą chłonność wody.
17
Content available remote Zastosowanie dialdehydów w syntezie poliestrów pochodnych kwasu salicylowego
75%
Maślińska-Solich J. , Kukowka S. , Jaworski D.
Chemik
|
2005
|
tom Vol. 58, nr 6
334-336
PL
Przedstawiono nową metodę otrzymywania poliestrów z aromatycznych dialdehydów. Dialdehydy [1,n-bis(2-formylofenoksy)alkany] utleniano równomolową ilością N-bromoimidu kwasu bursztynowego (NBS) w obecności inicjatora rodnikowego AIBN lub promieniowania UV. Transformacja dialdehydów do bromków kwasowych, a następnie ich bezpośrednia reakcja z diolami (1,3-propandiolem, 1,3-butandiolem, dietylo-L-winianem) prowadziła do otrzymania poliestrów. Polikondensację prowadzono w obecności katalizatorów przeniesienia międzyfazowego soli pirydyny i poliwinylopirydyny oraz TEBA (chlorku trietylobenzyloamoniowego), TBAB (bromku tetrabutyloamoniowego), TEAB (bromku tetraetyloamoniowego). Budowę polimerów określono za pomocą spektroskopii IR, NMR. Produkty zanalizowano również za pomocą chromatografii wykluczania (SEC).
EN
A novel synthetic procedure for the preparation of polyesters based on aromatic dialdehydes is described. Dialdehydes [1,n-bis(2-formylphenoxy)alkanes] were oxidized by equimolar amount of N-bromosuccinimide (NBS) in the presence of AIBN as a radical initiator or UV. A successfully transformation of dialdehydes into acid bromides, and their direct reaction with diols (1,3-propanodiol, 1,3-butanodiol, diethyl-L-tartrate) gave polyesters. The polycondensation was performed in the presence of phase transfer catalysts salts of pyridine and poly (vinylpyridine) or TEBA (triethylbenzylammonium chloride), TBAB (tetrabutylammonium bromide), TEAB (tetraethylammo-nium bromide). The structure of the polymer was determined by IR, NMR spectroscopy. Evidence for the formation of polymeric materials was confirmed by SEC (size exclusion chromatography) analysis.
18
Content available The influence of pH adjusted with different acids on the dyeability of polyester fabric
75%
Miljkovic M. M. , Djordjevic D. M. , Miljkovic V. M. , Stamenkovic M. , Stepanovic J.
Polish Journal of Chemical Technology
|
2014
|
tom Vol. 16, nr 4
1--5
EN
The infl uence of using formic, oxalic, citric, tartaric, hydrochloric, nitric, sulphuric and phosphoric acid for dyebath pH adjustment was investigated upon the dyeing of polyester fabric with CI Disperse Yellow 60. The positions of colour in CIELab coordinates of the samples dyed with the addition of tested acids were assessed and compared to those dyed with the addition of acetic acid. It was found that the differences in dyeabilities obtained with the addition of citric, oxalic, hydrochloric, nitric and sulphuric acid are entirely acceptable according to both M&S 83A and CMC (2:1) standards in comparison to the dyeability obtained with the addition of acetic acid.
19
The influence of blocked acid catalyst amount on polyester / melamine coating properties
75%
Rumyantseva S. S. , Kudinkina I. A. , Ilyin A. A. , Trofimova L. V.
Farby i Lakiery
|
2013
|
tom nr 1
7--11
EN
Polyester / melamine based paints are widely used in coil coating. The curing time for this type of coatings on the production line is from 30 to 60 s. One of the essential components providing fast curing is an acid catalyst. The purpose of the present work was to study the effect of an acid catalyst amount on the cured coating performance. The investigation was carried out using saturated hydroxyfunctional polyester. Hexa methoxy methyl melamine (HMMM) was used as a curing agent. The weight ratio of polyester to HMMM was 85 : 15. As an acid catalyst p-toluene sulfonic acid (p-TSA) blocked with triethylamine was used. The p-TSA concentration in the formulations was from 0 to 1,1 % wt. A relationship between the acid catalyst concentration and certain coating properties, i.e. glass transition temperature, water resistance, MEK double-rub resistance, flexibility and gloss, was established. The coatings containing 0,3-0,7 % wt p-TSA were demonstrated to have the best performance properties.
20
Content available remote Thermal Aging of Unsaturated Polyester Composite Reinforced with E-Glass Nonwoven Mat
63%
Hossain M. , Elahi A. H. M. F. , Afrin S. , Mahmud I. , Cho H. M. , Khan M. A.
Autex Research Journal
|
2017
|
tom Vol. 17, no. 4
313--318
EN
An experiment was carried out using glass fiber (GF) as reinforcing materials with unsaturated polyester matrix to fabricate composite by hand layup technique. Four layers of GF were impregnated by polyester resin and pressed under a load of 5 kg for 20 hours. The prepared composite samples were treated by prolonged exposure to heat for 1 hour at 60-150°C and compared with untreated GF-polyester composite. Different mechanical test of the fabricated composite were investigated. The experiment depicted significant improvement in the mechanical properties of the fabricated composite resulted from the heat treatment. The maximum tensile strength of 200.6 MPa is found for 90°C heat-treated sample. The mechanical properties of the composite do seem to be very affected negatively above 100°C. Water uptake of the composite was carried out and thermal stability of the composite was investigated by thermogravimetric analysis, and it was found that the composite is stable up to 600°C. Fourier transform infrared spectroscopy shows the characteristic bond in the composite. Finally, the excellent elevated heat resistant capacity of glass-fiber-reinforced polymeric composite shows the suitability of its application to heat exposure areas such as kitchen furniture materials, marine, and electric board.
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