DC pole | Wartość | Język |
dc.contributor.author | Bernat, Roksana | - |
dc.contributor.author | Maksym, Paulina | - |
dc.contributor.author | Tarnacka, Magdalena | - |
dc.contributor.author | Koperwas, Kajetan | - |
dc.contributor.author | Knapik-Kowalczuk, Justyna | - |
dc.contributor.author | Malarz, Katarzyna | - |
dc.contributor.author | Mrozek-Wilczkiewicz, Anna | - |
dc.contributor.author | Dzienia, Andrzej | - |
dc.contributor.author | Biela, Tadeusz | - |
dc.contributor.author | Turczyn, Roman | - |
dc.contributor.author | Orszulak, Luiza | - |
dc.contributor.author | Hachuła, Barbara | - |
dc.contributor.author | Paluch, Marian | - |
dc.contributor.author | Kamiński, Kamil | - |
dc.date.accessioned | 2021-10-14T07:49:20Z | - |
dc.date.available | 2021-10-14T07:49:20Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | "Polymer", 2021, vol. 233, art. no. 124166, s. 1-14 | pl_PL |
dc.identifier.issn | 0032-3861 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/21778 | - |
dc.description.abstract | In this paper, we report 1,5,7-Triazabicyclo[4.4.0]dec-5-ene (TBD) supported high-pressure approach enforcing
Ring-Opening Polymerization (ROP) of γ-butyrolactone (GBL), that due to unfavorable thermodynamics and low
ring strain, is considered as a hardly polymerizable monomer. Application of Broadband Dielectric Spectroscopy
(BDS) allowed us to find optimal thermodynamic conditions to perform well-controlled and notably fast polymerization
(even within 1 h!), avoiding undesired crystallization process. It was shown that by varying pressure
and temperature conditions, we could control molecular weight, dispersity of recovered macromolecules, as well
as rate and efficiency of the reaction that are significantly altered with respect to the reference process carried
out at ambient conditions. Experiments performed at respectively very low temperature T = 233 K and low/
moderate pressure (p = 75–250 MPa) and much higher temperatures (T = 248–268 K) and compressions (p =
1000 MPa) yielded poly(γ-butyrolactone) (PGBL) of tailored absolute molecular weight in moderate range Mn =
2.8–15.0 (up to 30.3) kg/mol and narrow/moderate dispersity ranging from Đ = 1.12–1.89. What is more, the
implementation of MALDI-TOF, GPC and DSC analyses, clearly indicated that as i) the time of reaction gets
longer, ii) the amount of catalyst increases, iii) the temperature lowers, the content of cyclic products in produced
polymers grows. This phenomenon influences the rheological properties (viscosity), foil formation ability (films)
and cell culture proliferation features of the recovered macromolecules. Presented results open a highly effective
and repeatable route to produce PGBL via pressure-assisted ROP and indicate the possibility of tuning properties
of this polymer by varying concentration of cycles or eventual block copolymerization with other biorelevant
monomers to meet the expectations of the biotechnological industry. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa-Użycie niekomercyjne-Bez utworów zależnych 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/pl/ | * |
dc.subject | Ring-opening polymerization | pl_PL |
dc.subject | PGBL | pl_PL |
dc.subject | High-presssure | pl_PL |
dc.title | The effect of high-pressure on organocatalyzed ROP of γ-butyrolactone | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.1016/j.polymer.2021.124166 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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