Premium
Flexible polyurethane foams reinforced with organic and inorganic nanofillers
Author(s) -
Ghasemi Shokoofeh,
Amini Ezatollah Nima,
Tajvidi Mehdi,
Kiziltas Alper,
Mielewski Deborah F.,
Gardner Douglas J.
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49983
Subject(s) - materials science , cellulose , polyurethane , composite material , halloysite , ultimate tensile strength , modulus , bacterial cellulose , oxide , chemical engineering , engineering , metallurgy
The effect of three different types of cellulose nanofillers on the morphology, mechanical, and thermal properties of flexible polyurethane foam was studied. Cellulose nanocrystals (CNC), cellulose nanofibrils (CNF), and cellulose filaments (CelFil) were used as fillers at 0.1–0.8 wt% loading levels. The comparison of the results showed that smaller loading levels resulted in foams with better performance in almost all cases. In the next step, the properties of foams containing CNC, CNF, or CelFil at 0.025%–0.1% loading levels were compared with those made with inorganic nanofillers including nanosilica (nSi), reduced graphene oxide, and halloysite nanotubes (HNT). Among all the properties evaluated, the tensile modulus of the foams was improved up to 40% by adding HNT at 0.05 wt% loading level whereas the addition of CNF resulted in a 44% increase in the compressive modulus of the foams at 0.1 wt% loading level.