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Hipulan LA, Dingcong RG, Estrada DJE, Dumancas GG, Bondaug JC, Alguno AC, Bacosa HP, Malaluan RM, Lubguban AA. Development of High-Performance Coconut Oil-Based Rigid Polyurethane-Urea Foam: A Novel Sequential Amidation and Prepolymerization Process. ACS OMEGA 2024; 9:13112-13124. [PMID: 38524448 PMCID: PMC10956093 DOI: 10.1021/acsomega.3c09598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/21/2024] [Accepted: 02/23/2024] [Indexed: 03/26/2024]
Abstract
The utilization of coconut diethanolamide (p-CDEA) as a substitute polyol for petroleum-based polyol in fully biobased rigid polyurethane-urea foam (RPUAF) faces challenges due to its short chain and limited cross-linking capability. This leads to compromised cell wall resistance during foam expansion, resulting in significant ruptured cells and adverse effects on mechanical and thermal properties. To address this, a novel sequential amidation-prepolymerization route was employed on coconut oil, yielding a hydroxyl-terminated poly(urethane-urea) prepolymer polyol (COPUAP). Compared to p-CDEA, COPUAP exhibited a decreased hydroxyl value (496.3-473.2 mg KOH/g), an increase in amine value (13.464-24.561 mg KOH/g), and an increase in viscosity (472.4-755.8 mPa·s), indicating enhanced functionality of 34.3 mgKOH/g and chain lengthening. Further, COPUAP was utilized as the sole B-side polyol in the production of RPUAF (PU-COPUAP). The improved functionality of COPUAP and its improved cross-linking capability during foaming have significantly improved cell morphology, resulting in a remarkable 4.7-fold increase in compressive strength (132-628 kPa), a 3.5-fold increase in flexural strength (232-828 kPa), and improved insulation properties with a notable decrease in thermal conductivity (48.02-34.52 mW/m·K) compared to PU-CDEA in the literature. Additionally, PU-COPUAP exhibited a 16.5% increase in the water contact angle (114.93° to 133.87°), attributing to the formation of hydrophobic biuret segments and a tightly packed, highly cross-linked structure inhibiting water penetration. This innovative approach sets a new benchmark for fully biobased rigid foam production, delivering high load-bearing capacity, exceptional insulation, and significantly improved hydrophobicity.
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Affiliation(s)
- Louell
Nikki A. Hipulan
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan9200, Philippines
- Environmental
Science Graduate Program, Department of Biological Sciences, Mindanao State University − Iligan Institute
of Technology, A. Bonifacio Avenue, Iligan 9200, Philippines
- Chemical
Engineering Program, College of Technology, University of San Agustin, General Luna St., Iloilo 5000, Philippines
| | - Roger G. Dingcong
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan9200, Philippines
| | - Dave Joseph E. Estrada
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan9200, Philippines
| | - Gerard G. Dumancas
- Department
of Chemistry, The University of Scranton, Scranton, Pennsylvania 18510, United States
| | - John Christian
S. Bondaug
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan9200, Philippines
- Environmental
Science Graduate Program, Department of Biological Sciences, Mindanao State University − Iligan Institute
of Technology, A. Bonifacio Avenue, Iligan 9200, Philippines
| | - Arnold C. Alguno
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan9200, Philippines
- Department
of Physics, Mindanao State University −
Iligan Institute of Technology, A. Bonifacio Avenue, Iligan 9200, Philippines
| | - Hernando P. Bacosa
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan9200, Philippines
- Environmental
Science Graduate Program, Department of Biological Sciences, Mindanao State University − Iligan Institute
of Technology, A. Bonifacio Avenue, Iligan 9200, Philippines
| | - Roberto M. Malaluan
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan9200, Philippines
- Department
of Chemical Engineering and Technology, Mindanao State University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan 9200, Philippines
| | - Arnold A. Lubguban
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan9200, Philippines
- Department
of Chemical Engineering and Technology, Mindanao State University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan 9200, Philippines
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Yanovsky VA, Andropov MO, Fakhrislamova RS, Churkin RA, Minaev KM, Yanovskaya EA. The Effect of Duration of Amidation of Fatty Acids with Diethanolamine on the Surfactant Properties. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | | | | | - Elena A. Yanovskaya
- Goldberg Research Institute of Pharmacology and Regenerative Medicine 3, Lenin ave., Tomsk, 634028 Russia
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Yapa Mudiyanselage A, Yao H, Viamajala S, Varanasi S, Yamamoto K. Efficient Production of Alkanolamides from Microalgae. Ind Eng Chem Res 2015. [DOI: 10.1021/ie503980g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ajith Yapa Mudiyanselage
- Department
of Chemistry and Biochemistry, University of Toledo, 2801 West
Bancroft Street, Toledo, Ohio 43606, United States
| | - Haoyi Yao
- Department
of Chemistry and Biochemistry, University of Toledo, 2801 West
Bancroft Street, Toledo, Ohio 43606, United States
| | - Sridhar Viamajala
- Department
of Chemical and Environmental Engineering, University of Toledo, 1650 Westwood Avenue, Toledo, Ohio 43606, United States
- School
of Green Chemistry and Engineering, University of Toledo, 2801 West
Bancroft Street, Toledo, Ohio 43606, United States
| | - Sasidhar Varanasi
- Department
of Chemical and Environmental Engineering, University of Toledo, 1650 Westwood Avenue, Toledo, Ohio 43606, United States
- School
of Green Chemistry and Engineering, University of Toledo, 2801 West
Bancroft Street, Toledo, Ohio 43606, United States
| | - Kana Yamamoto
- Department
of Chemistry and Biochemistry, University of Toledo, 2801 West
Bancroft Street, Toledo, Ohio 43606, United States
- School
of Green Chemistry and Engineering, University of Toledo, 2801 West
Bancroft Street, Toledo, Ohio 43606, United States
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Wang X, Wang X, Wang T. Synthesis of oleoylethanolamide using lipase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:451-457. [PMID: 22121828 DOI: 10.1021/jf203629w] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
An effective process for the enzymatic synthesis of oleoylethanolamide is described in this study. The process included purification of a commercial oleic acid product and then optimization of the reaction between the purified oleic acid and ethanolamine in the presence of hexane and a lipase. Under the optimal amidation reaction conditions identified, oleoylethanolamide was obtained with 96.6% purity. The synthesis was also conducted on a large scale (50 mmol of each of the reactants), and oleoylethanolamide purity and yield after crystallization purification were 96.1 and 73.5%, respectively. Compared to the previous studies, the current method of preparing high-purity oleoylethanolamide is more effective and economically feasible. The scalability and ease for such synthesis make it possible to study the biological and nutritional functions of the cannabinoid-like oleoylethanolamide in animal or human subjects.
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Affiliation(s)
- Xiaosan Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, No 1800 Lihu Road, Wuxi, Jiangsu 214122, People's Republic of China
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