What is it about?
This study focuses on the cellulose nanocrystal (CNC) reinforcement of a model RPUF based on a hybrid polyol system of 80:20 ‘polyether’ and palm-kernel oil-based ‘polyester’ polyols (PKObP), in order to simultaneously enhance thermal insulation and/or mechanical properties. The addition of 0.4 wt.% CNC in the RPUF afforded a 2.4% improvement (i.e. reduction) in the thermal conductivity (from 24.1 ± 0.4 mW/mK to 23.5 ± 0.3 mW/mK).
Why is it important?
The development of sustainable rigid polyurethane foam (RPUF) using biologically renewable materials remains a challenge in both academia and industry. Highlights • Thermal insulation RPUF is made with a partially biobased hybrid polyol system. • The nucleating effect of CNC is affected by the presence of palm-based polyol. • About 0.4% CNC loading in RPUF affords to retain its long-term thermal insulation. • Alignment of CNC to foam-rise enhances the stiffness of RPUF perpendicularly.
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This page is a summary of: Hybrid polyether-palm oil polyester polyol based rigid polyurethane foam reinforced with cellulose nanocrystal, Industrial Crops and Products, February 2018, Elsevier, DOI: 10.1016/j.indcrop.2017.12.032.
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