Mehanička i termička svojstva umreženih poli(uretan-estar-siloksana)

0377819 - ÚMCH 2013 RS hbs C - Conference Paper (international conference)
Džunuzović, J. V. - Pergal, M. V. - Poreba, Rafal - Ostojić, S. - Džunuzović, E. S. - Špírková, Milena - Jovanović, S.
Mehanička i termička svojstva umreženih poli(uretan-estar-siloksana).
[Mechanical and thermal properties of poly(urethane-ester-siloxane) networks.]
Proceedings. Belgrade: Serbian Chemical Society, 2012 - (Tešić, Ž.; Dekanski, A.), s. 218-221. ISBN 978-86-7132-049-8.
[Meeting of the Serbian Chemical Society /50./. Belgrade (RS), 14.06.2012-15.06.2012]
R&D Projects: GA ČR GAP108/10/0195
Institutional research plan: CEZ:AV0Z40500505
Institutional support: RVO:61389013
Keywords : poly(urethane-ester-siloxane) * mechanical properties * thermal properties
Subject RIV: CD - Macromolecular Chemistry

U ovom radu ispitana su svojstva poli(uretan-estar-siloksana) na bazi α,ω-dihidroksi-(etilenoksid-poli(dimetilsiloksan)-etilenoksida) (EO-PDMS-EO), 4,4´-diizocijanatodifenilmetana i alifatskog Boltorn® hiperrazgranatog poliestra druge pseudo generacije, kao umreživača. Uticaj udela EO-PDMS-EO na mehanička i termička svojstva umreženih poli(uretan-estar-siloksana) ispitan je dinamičko-mehaničkom analizom (DMA), diferencijalnom skenirajućom kalorimetrijom (DSC) i merenjme tvrdoće. Dobijeni rezultati ukazuju da smanjenje udela EO-PDMS-EO utiče na povečanje stepena mikrofazne separacije sintetisanih uzoraka.

Properties of poly (urethane-ester-siloxane)s based on α, ω-dihydroxy-(ethylene oxide-poly (dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO), 4,4 '-methylenediphnenyl diisocyanate and aliphatic Boltorn® hyperbranched polyester of the second pseudo-generation as crosslinking agent were investigated in this work. The effect of EO-PDMS-EO content on the mechanical and thermal properties of poly(urethane-ester-siloxane) network was investigated using dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC) and hardness measurements. Obtained results revealed that decrease EO-PDMS-EO content enhanced microphase separation in the synthesized networks.
Permanent Link: http://hdl.handle.net/11104/0209870