Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Antosik, A.K." wg kryterium: Wszystkie pola

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-5 z 5
    Tytuł:
    Wpływ montmorylonitu na właściwości reologiczne wodnych dyspersji karboksymetyloskrobi
    Influence of montmorillonite on the rheological properties of water disperisons of carboxymethyl starch
    Autorzy:
    Antosik, A. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/172201.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    karboksymetyloskrobia
    montmorylonit
    wodne dyspersje
    carboxymethyl starch
    montmorillonite
    water dispersion
    Opis:
    Water dispersions are usually a colloidal system in which one of the phases is highly dispersed in a second of a continuous nature, called a dispersion medium (in this case it is water). Dispersal is also called the process of distraction and self- -disperse as such. Water dispersions of carboxymethyl starch are the basis for the preparation of many products that, due to their initial dispersion form, can be modified, e.g. by adding fillers such as biodegradable films that affect the rheological properties of the dispersion [1]. The carboxymethyl derivative of starch was synthesized for the first time in 1924. The carboxymethylation reaction has become one of the most important starch modifications used in the industry on a large scale. Carboxymethyl starch (CMS) is characterized by a good solubility in cold water and higher resistance to bacteria than unmodified starch [7–9]. The carboxymethyl starch is obtained by the reaction of carboxymethylation (etherification) of the alkaline starch consisting in the introduction of the substituents into the structure of the starch, by reaction with monochloroacetic acid sodium salt. This process is called Williamson’s synthesis and CMS with different degree of substitution can be obtained by means of the mentioned process [10, 11]. The degree of substitution of carboxymethyl starch has a significant influence on its rheological properties, water dispersion of CMS with DS = 0.87 showed five times higher viscosity than CMS with lower value of this parameter, i.e. 0.15. Water dispersions with an increase in the montmorillonite content showed a high viscosity increase (about twice the increase in viscosity with the addition of 3% by weight). In both cases, aqueous dispersions stored above one month may be subject to the environmental degradation. In addition, in cases of compositions containing MMT, a rapid drop in viscosity due to the montmorillonite sedimentation is observed [17]. Rheological research of water carboxymethyl starch dispersions has great importance for science and for the subsequent application possibilities of products obtained on their basis. The effect of fillers on viscosity, and thus on the possibility of mixing them with aqueous CMS dispersions, affects, for example, the production of biodegradable films based on CMS with MMT, where the film is obtained from an aqueous dispersion of CMS with MMT with the addition of glycerine and citric acid [22]. Moreover, water dispersion of carboxymethyl starch with the addition of montmorillonite can be used as an additive to drilling fluids, electro-reed liquids or foundry adhesives [17].
    Źródło:
    Wiadomości Chemiczne; 2018, 72, 11-12; 829-839
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sieciowanie samoprzylepnych klejów silikonowych
    Crosslinking of silicone pressure-sensitive adhesives
    Autorzy:
    Antosik, A. K.
    Czech, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/172358.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    kleje samoprzylepne
    polimery
    silikonowe kleje samoprzylepne
    pressure-sensitive adhesives
    polimer
    silicone pressure sensitive adhesives
    Opis:
    Pressure-sensitive adhesives (PSAs) represent a system that actually dates back to the invention of the self-adhesive articles in 1935 when R. Stanton Avery produced the first coating unit using a wooden cigar box with two holes cut in the bottom. PSAs can be defined as a special category of adhesive which in dry form are permanently tacky at room temperature [1–4]. Since 1960s, silicone pressure-sensitive adhesives have found many uses. They are used in industrial plants, as tapes for joining materials with low surface energy, as well as in the sectors of electrical and electronic, medical care, health care and automotive industry. For about 10 years there has been great interest in new uses for the silicone PSA, particularly for medical and industrial belts. The above examples describe a growing range of potential commercial applications of silicone pressure- -sensitive adhesives. Silicone pressure-sensitive adhesives typically consist of large segments of the silane-functional silicone polymers and silicone resins (MQ). It is well known that silicone pressure-sensitive adhesives because of their unique properties are special-purpose products. The combination of the properties of silicones such as high flexibility of connections Si-O-Si, low intermolecular interaction, low surface tension, excellent thermal stability and transparency for UV radiation, excellent electrical properties, high chemical resistance and weather resistance makes silicone adhesives have improved properties compared to other typical polymeric organic adhesives. Due to the low surface tension of silicone adhesives, adhesive is easily spread on the surface of various materials [4–9]. The properties of silicone pressure sensitive adhesives (Si-PSA) crosslinking thermally by organic peroxides (according to a radical mechanism) depend on the type and concentration of crosslinker used. Benzoyl peroxide (BPO) and 2,4-dichlorobenzoyl peroxide (DClBPO) are the most commonly used peroxides the industry. Increasing the content of BPO or DClBPO in a predominantly affects significantly increase the cohesion, while reducing the adhesion of tested adhesives [1, 5, 6]. With the market testing of pressure sensitive adhesives and literature studies clearly show that there were no studies to date on the process of UV-curing silicone pressure sensitive adhesives; and there is no sales sided adhesive tapes, silicone crosslinked by UV radiation.
    Źródło:
    Wiadomości Chemiczne; 2016, 70, 1-2; 25-32
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ napełniaczy krzemowych na właściwości samoprzylepnych klejów silikonowych
    Influence of silicone fillers on silicone pressure-sensitive adhesives properties
    Autorzy:
    Antosik, A. K.
    Czech, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/172170.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    kleje samoprzylepne
    kaolin
    montmorylonit
    silikonowe kleje samoprzylepne
    pressure-sensitive adhesives
    montmorilonite
    silicone pressure-sensitive adhesives
    Opis:
    Pressure-sensitive adhesives (PSAs) represent a system that actually dates back to the invention of the self-adhesive articles in 1935 when R. Stanton Avery produced the first coating unit using a wooden cigar box with two holes cut in the bottom. PSAs can be defined as a special category of adhesive which in dry form are permanently tacky at room temperature [2, 6–8]. Since 1960s, silicone pressure-sensitive adhesives have found many uses. They are used in industrial plants, as tapes for joining materials with low surface energy, as well as in the sectors of electrical and electronic, medical care, health care and automotive industry. For about 10 years there has been great interest in new uses for the silicone PSA, particularly for medical and industrial belts. The above examples describe a growing range of potential commercial applications of silicone pressure-sensitive adhesives [2, 7, 9–11]. In contrast to the pressure-sensitive adhesives organic silicone pressure-sensitive adhesives show much better performance by this well known it happened that are used to obtain self-adhesive materials for special purposes. Si-PSA usually consist of large segments of the silanol-functional silicone polymers, and silicone resins. Polymeric chains comprising the silicone resins include methyl and phenyl groups thus are very little reactive chemicals. In order to obtain the best adhesion-cohesion balance are used crosslinked thermally in a temperature range of 120–150°C by using organic peroxides. Peroxides most commonly used in industry benzoyl peroxide (BPO) and 2,4-dichlorobenzoyl peroxide (DClBPO). Silicone pressure- -sensitive adhesives are characterized by high flexibility of connections Si-O-Si, low impact intermolecular, low surface tension, excellent thermal stability and transparency for UV radiation, excellent electrical properties, high chemical resistance and weather resistance [2, 6, 7, 14]. In the available literature the montmorillonite and kaolin modified silicone pressure-sensitive adhesives which exhibited increased thermal resistance are reported. The thermal properties of adhesives compositions are better to compared with “pure” silicon composition without any filler [6, 12–14].
    Źródło:
    Wiadomości Chemiczne; 2016, 70, 11-12; 761-769
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przewodzące samoprzylepne kleje akrylanowe z napełniaczami węglowymi
    Conductive acrylic pressure-sensitive adhesives with carbon filler
    Autorzy:
    Antosik, A. K.
    Czech, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/172375.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    kleje samoprzylepne
    przewodzące kleje samoprzylepne
    polimery
    samoprzylepne kleje akrylanowe
    adhesives
    conductive pressure-sensitive adhesives
    polymer
    acrylic pressure-sensitive adhesives
    Opis:
    Pressure-sensitive adhesives (PSA) are a group of adhesive-based macromolecular polymers which are characterized by good (satisfying the requirements of industrial) adhesion and cohesion; high temperature stability during use, excellent aging resistance and constant tear strength. In 1935, the concept of self-adhesive glue, wherein the obtained self-adhesive product of the invention R. Stanton Avery, was firstly developed. From many types of adhesives, the most common adhesives are acrylics pressure-sensitive adhesives [1–3]. In most cases, self-adhesive adhesives do not exhibit good conductive properties, whereas conductivity grades are classified in the group of insulators. In order to improve their conductive properties, studies have been conducted on the modification of polymers in adhesive compositions, where at least one of the components exhibited conductive properties (e.g. polymers with conjugated π-bonded polymers along polymeric chains). However, the best effects were obtained by adding conductive fillers such as metal (copper, aluminum), specially modified soot, nanotubes or graphene, carbon fibers, metallized glass and conductive fibers. This allowed the creation of electrically conductive compositions characterizing by conductivity in the range from 10–2 to 102 S/cm. This relatively high conductivity is the result of the percolation of conductive filler molecules into an insulating matrix or tunneling between electrically conductive molecules [10, 11]. Acrylate pressure-sensitive adhesives with conductive fillers have found a number of important industrial applications, especially in the electronics industry. Pressure- sensitive adhesives, such as self-adhesive tapes or adhesive films, are used as heating elements, sensors or conductive gums. Due to their good performance, they can be used to connect solar panels or glue small components in the microelectronics industry. They also can be used to discharge static charges from the surface – used as flexible drainage connections – especially in places where the spark is undesirable and can be dangerous. They are used as heating elements [10, 12, 27].
    Źródło:
    Wiadomości Chemiczne; 2017, 71, 11-12; 887-896
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Samonaprawiające się lakiery
    Self-healing varnishes
    Autorzy:
    Bednarczyk, P.
    Antosik, A. K.
    Czech, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/172663.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    lakier
    samonaprawiające się materiały
    powłoki
    varnish
    self-healing material
    coatings
    Opis:
    The recent decade brought about new dimensions to materials developments; stimuliresponse materials capable of responding to internal or external stimuli. The ability of materials to autonomously self-heal is the most promising property [1]. The number of publications that appeared in the past decade concerning the self-repair of polymeric materials is quite extensive. They cover different fields of research, including thermoplastic and thermoset polymers, polymer composites, and coatings. The first ideas already started to develop in the 1990s, when scientists started to look at nature to solve the recurring problem of damage to materials [2]. The process of implementing a strategy of autorepair of a damage is a subject of increasing interest. One of the challenges for many of the already developed self- -repairing systems is to enhance the structural stability and mechanical properties of the materials. The first developed self-healing materials relied on microencapsulated healing agents within the bulk polymer [3]. Upon mechanical stress, the microcapsules were ruptured releasing agents that reacted with the catalyst in the polymer matrix to repair the damage [4–5]. Among many other crosslinking methods relying mainly on epoxy chemistry, ‘click’-based chemistry, the use of thiolene-based systems, as well as catalytic crosslinking reactions based on ring opening metathesis polymerization have found wide application in materials science. In the latter methodology, the catalyst present inside the matrix then promotes an autorepair reaction via ROMP. Thermosetting autorepair polymers which have been proposed so far include Grubbs’ first-generation catalyst; currently, the possibility of applying other ruthenium catalysts such as second-generation Grubbs’ catalyst and Hoveyda–Grubbs’ second-generation catalyst are under evaluation [3]. In addition to the aforementioned methods, you can also find self-healing coatings in the reaction of Diels-Alder. The self-healing concept envisages a similar recovery of material properties, such as fracture toughness, corrosion resistance, or conductivity, to improve the durability and reliability of the polymer materials. Damage due to impact, wear or fatigue initiates a healing mechanism that preferentially without external stimulus can recover any functionality. Researchers working in the field of self-healing polymeric materials mainly focus on high-end applications where the added value outweighs the cost of production. Such applications can, for example, be found in the transport sector, electronics, and structural materials. Car coatings, structural composites in airplanes, conductive polymers in sensors are only some examples of many targeted applications. Repair of damage in these materials is often laborious, not cost-efficient and only detected on the macroscopic level when it is too late. On the other hand, self -healing materials try to avoid macroscopic failure by responding immediately or at least fast enough to damage [1].
    Źródło:
    Wiadomości Chemiczne; 2017, 71, 5-6; 381-388
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies