Nanocomposites Based on Thermoplastic Polyester Elastomers

The use of fillers in order to enhance the properties of polymers has been already well documented. Fundamentally, traditional fillers were applied to reduce the cost of the final polymeric products. Moreover, most micron-sized fillers required high loading for slight properties enhancement, thus causing problems in processing and melt flow due to the high viscosity of the obtained composite. Nanofillers might constitute the answer to the requirements made to the modern polymer materials. Nanofillers in the range of 3–5 wt% achieve the same reinforcement as 20–30 wt% of micron-sized fillers. Therefore, this study presents the influence of three different types of nanofillers that differ in shape (aspect ratio) on the morphology, electrical conductivity, and thermal stability of polyester thermoplastic elastomer (TPE) matrix, by means of poly(trimethylene)-block-poly(tetramethylene oxide) copolymer (PTT-PTMO). The morphology in this copolymer consisted of semicrystalline PTT domains dispersed in the soft phase of amorphous, noncrystallisable PTMO. The PTT-PTMO copolymer has been combined with 0.5 wt% of 1D (single-walled carbon nanotubes (SWCNTs), silicon carbide (SiC) nanofibers), 2D (graphene oxide (GO), graphene nanoplatelets (GNPs)), and 3D (polyhedral oligomeric silsesquioxane (POSS)) through in situ synthesis to obtain nanocomposites (NCs) samples

Wyk\u142ady z powszechnej historii gospodarczej (od schy\u142ku \u15bredniowiecza do I wojny \u15bwiatowej)

S\u142owa kluczowe: historia powszechna \u2013 14-20 w.; historia gospodarcza Europy i \u15bwiata; przemiany spo\u142eczne i polityczne w Europie; rewolucja przemys\u142owa w Europie i USA; ekspansja kolonialn

Marvel Cinematic Universe in the light of production studies

W pracy przyglądam się filmowym i telewizyjnym adaptacjom komiksów wydawnictwa Marvel. Poddaję je analizie metodami charakterystycznymi dla dziedziny badań produkcyjnych. Wychodząc od wyjaśnienia powiązań między poszczególnymi produkcjami, śledzę historię ich rozwoju oraz towarzyszące temu strategie biznesowe i twórcze, oceniając je pod kątem estetycznym, produkcyjnym i teoretycznym.In my bachelor's thesis I am looking into film and television adaptations of Marvel comic books. I am analyzing them focusing on methods which are peculiar to the production studies domain. Starting with explanation of connections between each production, I am tracing of their development history, business and creative strategies involved as well as evaluating them in terms of esthetic, production and theoretic values

Wielki przewr\uf3t: opowie\u15b\u107 o rewolucji przemys\u142owej

S\u142owa kluczowe: rewolucja przemys\u142owa; historia gospodarcza Polski i \u15bwiata \u2013 18-20 w.; kapitalizm; post\u119p techniczny; historia powszechn

Modification of substandard EPDM with amorphous thermoplastic polyesters (PETG and PEF): microstructure and physical properties

The phase morphology, thermal behavior and mechanical properties of two series of polymer blends based on ethylene/propylene/diene rubber (EPDM) and amorphous homologues of poly(ethylene terephthalate), i.e. glycol modified poly(ethylene terephthalate) (PETG) and poly(ethylene furanoate) (PEF), were investigated. The morphology of the blends shows a two phase structure in which the minor phase (amorphous polyester) is dispersed as domains in the major (EPDM) continuous matrix phase. Differential calorimetry studies confirmed that both systems were immiscible and exhibits two glass transitions. The melting peak area of EPDM in the blends decreased as the amount of the other component increased. The values of stress at strain of 100% were improved upon the increasing content of PETG in EPDM system, while only slight decrease of this value was observed. Moreover, the strong improvement of hardness and thermo-oxidative stability along with an increasing content of amorphous polyester phase was reported