0000000000676754

AUTHOR

Mariusz Szołyga

showing 3 related works from this author

Thermal Stability and Flame Retardancy of Polypropylene Composites Containing Siloxane-Silsesquioxane Resins

2018

A novel group of silsesquioxane derivatives, which are siloxane-silsesquioxane resins (S4SQ), was for the first time examined as possible flame retardants in polypropylene (PP) materials. Thermal stability of the PP/S4SQ composites compared to the S4SQ resins and neat PP was estimated using thermogravimetric (TG) analysis under nitrogen and in air atmosphere. The effects of the non-functionalized and n-alkyl-functionalized siloxane-silsesquioxane resins on thermostability and flame retardancy of PP materials were also evaluated by thermogravimetry-Fourier transform infrared spectrometry (TG-FTIR) and by cone calorimeter tests. The results revealed that the functionalized S4SQ resins may for…

Thermogravimetric analysisMaterials sciencePolymers and Plasticsflame-retardant mechanism02 engineering and technologythermogravimetry010402 general chemistryCombustion01 natural sciencesArticlelcsh:QD241-441chemistry.chemical_compoundlcsh:Organic chemistryCone calorimetersiloxane-silsesquioxane resinscone calorimeter testsThermal stabilityPolypropyleneGeneral Chemistry021001 nanoscience & nanotechnologySilsesquioxane0104 chemical sciencesThermogravimetryChemical engineeringchemistrySiloxane0210 nano-technologypolypropylenePolymers
researchProduct

Polypropylene/polyhedral oligomeric silsesquioxane nanocomposites – study of free volumes, crystallinity degree and mass flow rate

2016

Nanokompozyty polipropylen/poliedryczne oligomeryczne silseskwioksany (PP/POSS) przygotowano metodą mieszania w stanie stopionym polimeru. Wpływ struktury oraz ilości zastosowanych nanonapełniaczy POSS na objętości swobodne w polipropylenie określono z zastosowaniem spektroskopii czasów życia pozytonów (PALS). Ustalono zależności pomiędzy parametrami PALS: czasem życia o-Ps (τ3) i natężeniem (I3) składowej o-Ps oraz wartościami stopnia krystaliczności (Xc ) i masowego wskaźnika szybkości płynięcia (MFR) badanych materiałów. Obecność nanonapełniaczy POSS wpłynęła na liczbę i rozmiary objętości swobodnych w polimerze, co spowodowało zmianę mikrostruktury osnowy polipropylenowej. Wraz ze zwięk…

poliedryczne oligomeryczne silseskwioksany (POSS)Materials sciencePolymers and PlasticsGeneral Chemical Engineering02 engineering and technology010402 general chemistry01 natural sciencesDegree (temperature)chemistry.chemical_compoundCrystallinitymass flow ratenanocompositesMaterials ChemistryMass flow rateComposite materialnanokompozytyPolypropyleneNanocompositepositron annihilation lifetime spectroscopy (PALS)masowy wskaźnik szybkości płynięciacrystallinity degreestopień krystaliczności021001 nanoscience & nanotechnologySilsesquioxane0104 chemical scienceschemistryspektroskopia czasów życia pozytonów (PALS)polipropylen0210 nano-technologypolypropylenepolyhedral oligomeric silsesquioxanes (POSS)Polimery
researchProduct

Functionalized siloxane‐silsesquioxane resins and polypropylene‐based composites: Morphological, structural, thermal, and mechanical properties

2018

Non‐functionalized and n‐alkyl‐functionalized siloxane‐silsesquioxane resins (S4SQ) were synthesized and characterized to confirm their structure and properties. Polypropylene (PP) composites with S4SQ resins as fillers were prepared by the melt blending. The influence of the kinds and amounts of fillers on the structural, morphological and thermal properties as well as mechanical characteristics and processability was determined. High compatibility of composites with functionalized resins resulted in more homogenous dispersion of filler particles in comparison with the composites which contained a non‐functionalized resin. Moreover, the introduction of S4SQ resins into PP strongly affected…

PolypropyleneMaterials sciencePolymers and Plastics02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesSilsesquioxane0104 chemical scienceschemistry.chemical_compoundchemistrySiloxaneThermalMaterials ChemistryCeramics and CompositesComposite material0210 nano-technologyPolymer Composites
researchProduct