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Composites made from a soybean oil biopolyurethane and cellulose nanocrystals
Author(s) -
Mucci Veronica L.,
Ivdre Aiga,
Buffa Juan M.,
Cabulis Ugis,
Stefani Pablo M.,
Aranguren Mirta I.
Publication year - 2018
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24539
Subject(s) - materials science , microcrystalline cellulose , cellulose , nanocellulose , nanocomposite , ultimate tensile strength , composite material , composite number , epoxidized soybean oil , glass transition , polyurethane , hydrolysis , nanocrystal , chemical engineering , polymer , organic chemistry , nanotechnology , chemistry , raw material , engineering
Cellulose nanocrystals (CNC) obtained by acidic hydrolysis from microcrystalline cellulose were dispersed in a biopolyurethane matrix to prepare composite films. The polyurethane was prepared from a hydroxylated soybean oil (SO‐OH) and a polymeric diphenyldiisocyanate (pMDI), using a organotin compound as the catalyst. The composite films contained different concentrations of nanocelullose, without any macroscopic aggregates in all cases. Thermal, tensile and dynamic mechanical properties of the films were determined for all the samples. In particular, it was observed that the glass transition temperature of the nanocomposites slightly increased with the concentration of the cellulose nanocrystals. The nanocomposite with 1 wt% of nanocellulose showed the highest tensile strength of the series. POLYM. ENG. SCI., 58:125–132, 2018. © 2017 Society of Plastics Engineers