TY - JOUR
T1 - Bio-Based Polyurethane Composites from Macauba Kernel Oil
T2 - Part 1, Matrix Synthesis from Glycerol-Based Polyol
AU - Andrade Breves, Rodolfo
AU - Ajiola, Daniel
AU - de Vasconcelos Vieira Lopes, Roseany
AU - Quirino, Rafael L.
AU - Colin, Baptiste
AU - Petrissans, Anelie
AU - Petrissans, Mathieu
AU - Sales, Maria José Araújo
N1 - Publisher Copyright:
© 2024 by the authors.
PY - 2024/9
Y1 - 2024/9
N2 - Polyurethanes are the result of a reaction between an isocyanate and a polyol. The large variety of possible reagents creates many possible polyurethanes to be made, such as soft foams, rigid foams, coatings, and adhesives. This polymer is one of the most produced and consumed polymers in the world with an ever-increasing demand. Despite its usual petrochemical nature, research on bio-based polyurethanes flourishes due to the ease in creating bio-based polyols. This work covers the synthesis of a novel macauba kernel oil polyol by the epoxidation of the oil, followed by a ring-opening reaction of the epoxide with glycerol, used for the preparation of polyurethane foams using different NCO/OH ratios. The FTIR and H1 results confirm the formation of the epoxide and polyol, and the polymers in all NCO/OH ratios were confirmed by FTIR, showing great similarities between the samples, especially PU 1.0 and PU 1.2. Despite the TGs showing close behaviors for the three samples, their DTGs showed great difference between the samples, with PU 1.0 presenting a regular PU DTG profile with three degradation peaks while the other two sample presented five degradation peaks, indicating a higher crosslinking density in them.
AB - Polyurethanes are the result of a reaction between an isocyanate and a polyol. The large variety of possible reagents creates many possible polyurethanes to be made, such as soft foams, rigid foams, coatings, and adhesives. This polymer is one of the most produced and consumed polymers in the world with an ever-increasing demand. Despite its usual petrochemical nature, research on bio-based polyurethanes flourishes due to the ease in creating bio-based polyols. This work covers the synthesis of a novel macauba kernel oil polyol by the epoxidation of the oil, followed by a ring-opening reaction of the epoxide with glycerol, used for the preparation of polyurethane foams using different NCO/OH ratios. The FTIR and H1 results confirm the formation of the epoxide and polyol, and the polymers in all NCO/OH ratios were confirmed by FTIR, showing great similarities between the samples, especially PU 1.0 and PU 1.2. Despite the TGs showing close behaviors for the three samples, their DTGs showed great difference between the samples, with PU 1.0 presenting a regular PU DTG profile with three degradation peaks while the other two sample presented five degradation peaks, indicating a higher crosslinking density in them.
KW - epoxide
KW - glycerol
KW - macauba
KW - polyurethane
KW - thermal stability
UR - http://www.scopus.com/inward/record.url?scp=85205224688&partnerID=8YFLogxK
U2 - 10.3390/jcs8090363
DO - 10.3390/jcs8090363
M3 - Article
AN - SCOPUS:85205224688
SN - 2504-477X
VL - 8
JO - Journal of Composites Science
JF - Journal of Composites Science
IS - 9
M1 - 363
ER -