A Novel Rigid PU Foam Based on Modified Used Palm Oil as Sound Absorbing Material

Novel bio-polyol was successfully synthesized from used palm oil (UPO) and was further tested for preparing rigid polyurethane (PU) foams. In this work, the modified used palm oil (MUPO) was synthesized in a single step process, by epoxidation together with ring opening reactions. The reagent ratios...

Full description

Saved in:
Bibliographic Details
Published in:Journal of polymers and the environment 2019-08, Vol.27 (8), p.1693-1708
Main Authors: Riyapan, Duangporn, Saetung, Anuwat, Saetung, Nitinart
Format: Article
Language:English
Subjects:
ABSORPTION
Absorptivity
Cell size
Chemical synthesis
Chemistry
Chemistry and Materials Science
Compressive properties
Compressive strength
Environmental Chemistry
Environmental Engineering/Biotechnology
Epoxidation
Flame retardants
Flammability
FOURIER TRANSFORMATION
Fourier transforms
HYDROGEN 1
Industrial Chemistry/Chemical Engineering
INFRARED SPECTRA
Magnetic resonance spectroscopy
MATERIALS SCIENCE
MOLECULAR WEIGHT
Molecular weight distribution
NMR
NMR spectroscopy
NUCLEAR MAGNETIC RESONANCE
Organic chemistry
Original Paper
PALM OIL
Plastic foam
Polymer Sciences
Polyurethane
Polyurethane foam
POLYURETHANES
POTASSIUM HYDROXIDES
Reaction time
Reagents
Ring opening
Sound
Sound transmission
SPECTROSCOPY
Vegetable oils
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Novel bio-polyol was successfully synthesized from used palm oil (UPO) and was further tested for preparing rigid polyurethane (PU) foams. In this work, the modified used palm oil (MUPO) was synthesized in a single step process, by epoxidation together with ring opening reactions. The reagent ratios and reaction time for MUPO synthesis were also studied. The chemical structure of MUPO was confirmed by 1 H-NMR spectroscopy and FTIR. The hydroxyl value of MUPO increased with reaction time and depended also on reagent ratio. The GPC trace of MUPO showed a bimodal distribution and the molecular weight slightly decreased with OH value. New rigid PU foams were prepared from MUPO. The foam cell size and compressive strength at 10% strain increased with OH value. All the rigid PU foams had excellent sound absorption coefficients. The lowest OH value (OHV = 100 mg KOH/g) provided sound absorption from 2200 Hz. In addition, the flammability of PU foams was improved by adding 30% wt of triphosphate (TPP) as flame retardant. The investigations showed that a bio-polyol based on UPO was suitable for preparing rigid PU foams that could serve as alternative sound absorbing materials. Graphical Abstract
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-019-01460-9