Article
Polymer Science
Yin Yam Chan, Chao Ma, Feng Zhou, Yuan Hu, Bernhard Schartel
Summary: An alternative phosphorous soybean-oil-based polyol was used for flexible polyurethane foams synthesis, with the addition of 5% and 10% expandable graphite (EG) to improve flame retardancy. The combination of phosphorous polyols and EG showed significantly enhanced flame retardancy, with a three times increase in char yield, indicating a potential strategy for future flame retarded FPUFs.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Polymer Science
Joo Hyung Lee, Seong Hun Kim, Kyung Wha Oh
Summary: In this study, castor oil was utilized as a sustainable resource to synthesize multifunctional polyols for the production of polyurethane foam, aiming to improve production efficiency, sustainability, and compressive strength. The results demonstrated that using multifunctional polyol blends to fabricate polyurethane foams effectively enhances their compressive properties. The findings are expected to broaden the applications of bio-based polyurethane foams.
Article
Green & Sustainable Science & Technology
Krzysztof Polaczek, Maria Kuranska, Aleksander Prociak
Summary: This article discusses the potential of using used cooking oil as a feedstock for producing open-cell polyurethane foam. The study focuses on the effects of bio-polyol properties on the properties of the final foam, and the key step in the synthesis of bio-polyols. The results show that the foams produced using used cooking oil-based polyols have comparable properties to commercial products.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Characterization & Testing
Jungha Lee, Jung Hyeun Kim
Summary: In this study, castor oil-based bio-polyol and two types of gelling catalysts were used to synthesize PU foams. The effects of bio-polyol content and catalyst type on sound absorption, compression strength, and VOCs emission were examined. The results showed that increasing bio-polyol content and using a tin catalyst resulted in smaller cavity and pore sizes, leading to higher sound absorption and compression strength. Moreover, the application of bio-polyol also reduced VOCs emissions from foam degradation. Therefore, using bio-derived polyol holds promise for reducing environmental issues in industrial applications.
Article
Engineering, Environmental
Fang Liu, Shuming Chen
Summary: Bio-based acoustic materials synthesized with coconut oil and rapeseed oil polyurethane show superior acoustic and mechanical properties compared to petroleum-based polyurethane, making them a promising alternative for future applications.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Biochemistry & Molecular Biology
Marcin Borowicz, Marek Isbrandt, Joanna Paciorek-Sadowska
Summary: The research aimed to obtain two new eco-polyols based on waste polylactide (PLA) and tested their effects on rigid polyurethane and polyisocyanurate foams. Analysis showed that partial replacement of petrochemical polyol by eco-polyols resulted in better performance in terms of density, compressive strength, brittleness, water absorption, and aging resistance for both RPU/PIR and PRU foams.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Applied
Shuai Wang, Fukai Yang, Wei Sun, Xinyu Xu, Yuyuan Deng
Summary: Rigid polyurethane foam (RPUF) is commonly used but consumes a large amount of petroleum. To address this issue, green and sustainable polyols were synthesized. The main disadvantage of RPUF is its flammability. To improve its flame retardancy, phosphorylated soybean oil polyol (Polyol-P) and phenyl phospho-soybean oil polyol (Polyol-PPOA) were used. The results showed that the cell sizes and numbers of RPUF-P and RPUF-PPOA varied with the contents of Polyol-P and Polyol-PPOA. Mechanical tests revealed the compressive strengths of RPUF-P4 and RPUF-PPOA4, while the limiting oxygen index and UL 94 ratings demonstrated the flame retardancy of RPUF-P and RPUF-PPOA.
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2023)
Article
Engineering, Environmental
Gurjot S. Dhaliwal, Dilpreet S. Bajwa, Sreekala Bajwa
Summary: By adding nanoclay to soy-based PU foam, the foam exhibited superior mechanical and flame retardant properties.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Environmental Sciences
Mohd Haziq Dzulkifli, Rohah A. Majid, Mohd Yazid Yahya
Summary: Due to its non-recyclable nature, industrial rockwool fiber wastes have caused environmental and waste management issues. This study presents a solution by synthesizing a palm oil-based polyurethane foam with reclaimed rockwool fibers as fillers. The resulting composite foam shows improved thermal stability and foam properties, indicating potential for applications requiring moderate thermal stability and load-bearing capabilities.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2022)
Article
Agricultural Engineering
Elham Nadim, Pavan Paraskar, Emma J. Murphy, Mohammadnabi Hesabi, Ian Major
Summary: By using Camelina oil as a base chemical, we successfully synthesized biocarbon-rich polyurethane coatings as a potential alternative to petrochemical-based materials. Our study confirmed the formation of Camelina oil-based polyols and the establishment of ester and amide linkages. The resulting polyurethane coatings demonstrated satisfactory thermal stability and showed promise for non-wet applications.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Physical
Shu Peng, Depeng Gong, Youliang Zhou, Chaocan Zhang, Yinchun Li, Chunyang Zhang, Yitian Sheng
Summary: This paper proposes an environmentally friendly recycling process for the degradation of waste polyurethane foam using triblock polyether. The degradation product can be directly utilized to synthesize recycled polyurethane foam, which has excellent oil absorption performance and reusability after hydrophobic modification. This economical and green process shows great prospects for large-scale applications.
Article
Polymer Science
Marcin Zemla, Aleksander Prociak, Slawomir Michalowski
Summary: Rigid polyurethane foams (RPURF) containing bio-polyol from rapeseed oil and different phosphorus-based flame retardants were synthesized. The addition of flame retardants influenced the cellular structure and compressive strength of the foams, but all materials still had low thermal conductivity coefficients suitable for thermal insulation. The modified RPURF showed lower tendency to fire development compared to the reference foams.
Article
Agricultural Engineering
Cheng-Shuang Wang, Jie Zhang, Han Wang, Meng He, Liang Ding, Wei-Wei Zhao
Summary: In this study, novel soybean oil-based waterborne polyurethane coatings and films with significantly improved fracture toughness and flame retardancy were successfully synthesized using chain extenders BH and BDO. The mechanical properties of SPU films were effectively improved by the introduction of BH, showing remarkable enhancements in tensile strength, elongation at break, and fracture toughness. The flame retardancy of SPU films increased gradually with the BH molar content, reaching a high LOI value of 28.2% for SPU80 with 0.9 wt% phosphorus content.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Polymer Science
Murni Sundang, Nur Sjanrah Nurdin, Sariah Saalah, Yamunah Jaibalah Singam, Syeed SaifulAzry Osman Al Edrus, Noor Maizura Ismail, Coswald Stephen Sipaut, Luqman Chuah Abdullah
Summary: In this study, jatropha-based polyester polyols were synthesized and used to produce waterborne polyurethane. The synthesized polyols had viscosities within the range of commercially available polyols, and the resulting waterborne polyurethane dispersions exhibited good stability and dispersibility.
Article
Polymer Science
Mingyang Li, Daidong Wei, Wenchao Zhang, Liyan Liang, Qiwen Yong
Summary: A vegetable oil-based polyol was used to obtain a biobased polyurethane anti-smudge coating with excellent anti-ink and self-cleaning performance. The coating exhibited high smoothness, transparency, and mechanical robustness, and could easily repel water, ink, and other liquids without leaving any residue.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)