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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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Zhou Y, Zheng L, Chen X, Huang Y, Essawy H, Du G, Zhou X, Zhang J. Developing high performance biodegradable film based on crosslinking of cellulose acetate and tannin using caprolactone. Int J Biol Macromol 2024; 262:130067. [PMID: 38336318 DOI: 10.1016/j.ijbiomac.2024.130067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 01/28/2024] [Accepted: 02/07/2024] [Indexed: 02/12/2024]
Abstract
The use of metal catalysts during the production process of cellulose acetate (CA) film can have an impact on the environment, due to their toxicity. Diphenyl phosphate (DPP) was used instead of toxic metal catalyst to react with cellulose acetate, tannin (T) and caprolactone (CL) for preparation of cellulose acetate-caprolactone-tannin (CA-CL-T) film. The results show that DPP can produce a cross-linked network structure composed of tannin, caprolactone and cellulose acetate. The maximum molecular weight reached 113,260 Da. The introduction of tannin and caprolactone into cellulose acetate caused the resulting CA-CL-T film acquire excellent strengthening/toughening effect, in which a tensile strength of 23 MPa and elongation at break of 18 % were attained. More importantly, the resistance of the film to UV radiation was significantly improved with the tannin addition, which was corroborated by the CA-CL-T film still exhibiting a tensile strength of 13 MPa and elongation at break around 13 % after continuous exposure to UV radiation for 9 days. On the other hand, the insertion of caprolactone provoked enhancement of the overall moisture resistance. Five days treatment of the films with Penicillium sp. induced gradual drop in quality, indicating the CA-CL-T film show response to biodegradation. In all, the effective crosslinking between the components of the developed material is responsible for the acquired set of these distinct characteristics.
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Affiliation(s)
- Yunxia Zhou
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China; Research Institute of Wood Industry, Chinese Academy of Forestry, Haidian, 100091 Beijing, China
| | - LuLu Zheng
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China
| | - Xinyi Chen
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China
| | - Yuxiang Huang
- Research Institute of Wood Industry, Chinese Academy of Forestry, Haidian, 100091 Beijing, China.
| | - Hisham Essawy
- Department of Polymers and Pigments, National Research Centre, Dokki, 12622 Cairo, Egypt
| | - Guanben Du
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China
| | - Xiaojian Zhou
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China.
| | - Jun Zhang
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China.
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