Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Krystyna Czaja"'
Autor:
Marzena Białek, Krystyna Czaja
Publikováno v:
Materials, Vol 16, Iss 5, p 1876 (2023)
This paper is a review of studies on the use of the polyhedral oligomeric silsesquioxanes (POSS) of various structures in the synthesis of polyolefins and the modification of their properties, namely: (1) components of organometallic catalytic system
Externí odkaz:
https://doaj.org/article/01175e3513bb41a895679905391e5b09
Publikováno v:
Polymers, Vol 14, Iss 6, p 1200 (2022)
Ionic liquids (ILs) were used for the first time as catalysts for the glycerin condensation reaction. A series of imidazolium and ammonium ionic liquids differing in the length of the alkyl substituent (C2, C12, and C14) and the type of anion (Br−,
Externí odkaz:
https://doaj.org/article/d809848c379d4da6be18c402c89303b5
Publikováno v:
BioResources, Vol 11, Iss 3, Pp 6211-6231 (2016)
This study describes the properties of thermoplastic polymer composites based on polyethylene (of low and high density) and ethylene-propylene copolymers using various types of conifer needles (pine, spruce, fir, and cedar) as fillers. For the needle
Externí odkaz:
https://doaj.org/article/5004359c4206439a9085d9f94029e21f
Publikováno v:
Polymers, Vol 11, Iss 1, p 144 (2019)
The purpose of this work was to synthesize and characterize oligoglycerols with the chains of more than four repeating units. Those oligoglycerols may have some interesting applications, among others, as polyoxyalkylation starters. The glycerol oligo
Externí odkaz:
https://doaj.org/article/70f6e69b19514c9197b05f5bfda92612
Autor:
Arkadiusz Niemczyk, Katarzyna Dziubek, Beata Sacher-Majewska, Krystyna Czaja, Justyna Czech-Polak, Rafał Oliwa, Joanna Lenża, Mariusz Szołyga
Publikováno v:
Polymers, Vol 10, Iss 9, p 1019 (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 S4
Externí odkaz:
https://doaj.org/article/31968cc3fd224505bed982bf273789a3
Publikováno v:
Polymers, Vol 10, Iss 2, p 223 (2018)
The copolymers of ethylene (E) with open-caged iso-butyl-substituted tri-alkenyl-silsesquioxanes (POSS-6-3 and POSS-10-3) and phenyl-substituted tetra-alkenyl-silsesquioxane (POSS-10-4) were synthesized by copolymerization over the ansa-metallocene c
Externí odkaz:
https://doaj.org/article/60a1708b856a453f843c7a653d759891
Publikováno v:
Polymer Composites. 43:987-997
Halloysite nanotubes (HNT) and montmorillonite (Mt) were modified by a novel, dicarboxylic fatty acid substituted amido-imidazolium chloride. It was found that the modification process of the clays by the imidazolium compound improved their dispersio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5d03c7a1e93b300e074daa6113cd0b9
https://doi.org/10.1002/pc.26428
https://doi.org/10.1002/pc.26428
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 142(4):1447-1456
This paper reported thermal properties of ethylene copolymers with di- and tri-alkenylsilsesquioxanes (POSS) synthesized by bis(phenoxy-imine) Ti, Zr, V, and V salen-type complexes. Ethylene copolymers with multi-alkenyl POSS obtained by such complex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5561928bc51f748baf147c45ebb674a2
https://doi.org/10.1007/s10973-020-09491-4
https://doi.org/10.1007/s10973-020-09491-4
Autor:
Krystyna Czaja, Marzena Białek
Publikováno v:
Materials. 16:1876
This paper is a review of studies on the use of the polyhedral oligomeric silsesquioxanes (POSS) of various structures in the synthesis of polyolefins and the modification of their properties, namely: (1) components of organometallic catalytic system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ce5673dfbca12edf95fa6a29f24ee1d
https://doi.org/10.3390/ma16051876
https://doi.org/10.3390/ma16051876
Publikováno v:
Polymer Composites. 40(11):4351-4361
High‐density polyethylene (HDPE) composites filled with silicon‐based fillers were prepared by melt blending. The use of non‐functionalized and n‐octyl‐functionalized siloxane‐silsesquioxane resins and the sol‐gel silicas as fillers all
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::473973810cffe2b62018439e69775744
https://doi.org/10.1002/pc.25296
https://doi.org/10.1002/pc.25296