Article
Polymer Science
Ismawati Palle, Valeritta Lodin, Ag Ahmad Mohd Yunus, Seng Hua Lee, Paridah Md Tahir, Naruhito Hori, Petar Antov, Akio Takemura
Summary: The compatibility between isocyanate and polyol is crucial for the performance of polyurethane products. This study investigated the impact of ratios between pMDI and Acacia mangium liquefied wood polyol on the properties of polyurethane films. The results showed that higher NCO/OH ratios increased the degradation temperature and glass transition temperature of the films. The formation of urethane bonds between pMDI and polyol improved the rigidity of the films.
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
Biochemistry & Molecular Biology
Fabio Hernandez-Ramos, Maria Gonzalez Alriols, M. Mirari Antxustegi, Jalel Labidi, Xabier Erdocia
Summary: This study proposes the use of crude glycerol and microwave-assisted liquefaction as substitutes for conventional methods and commercial glycerol to enhance the sustainability on the production of bio-polyols. Bio-polyols with suitable properties for producing elastic and rigid polyurethanes were synthesized using organosolv lignins and polyethylene glycol as solvents and sulphuric acid as a catalyst. Several parameters were analyzed, indicating the suitability of the bio-polyols for polyurethane synthesis.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
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
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
Polymer Science
Fanfan Chen, Chiyi Wang, Xiaoyun Liu, Zhifen Wang, Lin Fang, Yucang Zhang
Summary: The high-value utilization of shrimp and crab shell marine waste has been achieved by converting solid chitin into liquid low-molecular-weight polyol compounds using liquefaction technology. Chitin liquefaction was conducted with sulfuric acid as the catalyst and propanetriol and polyethylene glycol as the liquefying agents. The resulting chitin liquefaction product was characterized and used to synthesize a polyurethane foam with improved flame retardance and thermal-insulation properties compared to traditional polyol polyurethane foam.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Engineering, Chemical
Go Masuda, Ayana Nagao, Weiqian Wang, Qingyue Wang
Summary: This study examines the optimized condition of liquefaction of driftwood and shows that it can be used as a biomass resource for the production of biodegradable polyurethane foam.
Article
Chemistry, Physical
Maria Kuranska, Ugis Cabulis, Aleksander Prociak, Krzysztof Polaczek, Katarzyna Uram, Mikelis Kirpluks
Summary: This article compares the properties of closed-cell PUR bio-foams produced on a laboratory scale and on an industrial scale, and found that the foams modified with the bio-polyol have higher compressive strength at low temperatures.
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
Polymer Science
Fernanda R. Vieira, Nuno V. Gama, Dmitry V. Evtuguin, Carlos O. Amorim, Vitor S. Amaral, Paula C. O. R. Pinto, Ana Barros-Timmons
Summary: Rigid polyurethane foams (RPUFs) were synthesized using lignin-based polyol obtained through the reaction of kraft lignin with propylene carbonate. The formulations were optimized to achieve low thermal conductivity and low density for lightweight insulation. The resulting bio-based RPUFs exhibited comparable properties to commercial RPUFs and showed potential as a replacement for petroleum-based RPUFs. This study introduces a novel approach using 100% unpurified lignin-based polyol in the production of RPUFs.
Article
Chemistry, Physical
Adam Olszewski, Pawel Nowak, Paulina Kosmela, Lukasz Piszczyk
Summary: This study investigates the process of obtaining highly filled glass and carbon fiber composites. The addition of carbon and glass fibers into the polymer matrix leads to an increase in mechanical properties, enhanced thermal stability, and improved rigidity of the material. Dynamic mechanical analysis shows a significant increase in the material's storage modulus and rigidity across a wide range of temperatures.
Article
Materials Science, Multidisciplinary
Minhui Pang, Shuqi Dong, Jianguo Zhao, Hongyan Li, Dongsheng Liu, Lixia Li
Summary: To manufacture high bio-content degradable polyurethane-coated fertilizer, corn straw and starch were co-liquefied to produce bio-polyol. The ratio of corn straw to starch had an impact on the liquefaction behavior, with a higher hydroxyl content observed when starch was added. The incorporation of starch segments in the bio-polyol resulted in a more stable and densely crosslinked coating, with better controlled-release properties for coated urea. This study provides a cost-effective and environmentally friendly approach to utilizing corn straw as a coating material.
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
Materials Science, Characterization & Testing
Marzena Szpilyk, Renata Lubczak, Jacek Lubczak
Summary: A new polyol was synthesized from cellulose, glycidol, and ethylene carbonate for rigid polyurethane foam production, showing similar physical properties, superior thermal resistance, and good biodegradability in soil. The foam exhibited improved compressive strength after thermal exposure and 70-80% biodegraded within 28 days in soil.
Article
Biotechnology & Applied Microbiology
Hongwei Li, Aristide Laurel Mokale Kognou, Zi-Hua Jiang, Wensheng Qin, Chunbao Charles Xu
Summary: This paper explores a hydrothermal treatment method for converting greenhouse wastes and corn stalk into bio-oil/bio-polyol, and demonstrates the potential of using this bio-oil as a substitute for petroleum-based polyol in the preparation of bio-polyurethane foams. The results show that the method is effective in converting wastes and the resulting BPU foams exhibit superior biodegradability.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2022)
Article
Chemistry, Analytical
Liyi Ye, Jingmiao Zhang, Jie Zhao, Zhiming Luo, Song Tu, Yingwu Yin
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2015)
Article
Engineering, Chemical
Zhiming Luo, Jingmiao Zhang, Canfeng Zhuang, Song Tu, Yingwu Yin, Liyi Ye
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2016)
Article
Agricultural Engineering
Liyi Ye, Jingmiao Zhang, Jie Zhao, Song Tu
BIORESOURCE TECHNOLOGY
(2014)
Article
Polymer Science
Jingmiao Zhang, Naruhito Hori, Akio Takemura
POLYMER DEGRADATION AND STABILITY
(2019)
Article
Polymer Science
Jingmiao Zhang, Naruhito Hori, Akio Takemura
POLYMER DEGRADATION AND STABILITY
(2020)
Article
Polymer Science
Jingmiao Zhang, Naruhito Hori, Akio Takemura
Summary: Using agricultural waste particles as fillers in polyurethane foam can improve physical and mechanical properties, enhance thermal stability, and create more uniform cellular structure. Among the four types of waste particles studied, rice straw particles showed the greatest promoting ability for foam modification, while oilseed rape straw particles had a more complex influence. Adding appropriate amounts of agricultural waste particles can be cost-effective, environmentally friendly, and widely applicable for biomass utilization and biopolymer preparation.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Applied
Jingmiao Zhang, Ao Xia, Xianqing Zhu, Yun Huang, Xun Zhu, Qiang Liao
Summary: This article comprehensively reviews the formation mechanisms, properties, and applications of bio-based hydrothermal carbon quantum dots (CDs), and proposes the co-production of CDs and value-added biofuels from biomass hydrothermal process.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Polymer Science
Jingmiao Zhang, Naruhito Hori, Akio Takemura
Summary: Bio-based polyurethane foam, with its environmental friendliness and wide range of raw materials, has attracted increasing attention. In this study, agricultural waste-based polyols were used to prepare polyurethane foams, and their stability and degradation properties were investigated. The results showed that these bio-based foams exhibited excellent thermal stability, stability in water, degradability in soil, and elastic ability, making them potentially suitable for insulation, degradable plastics, and elastomers applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Agricultural Engineering
Jingmiao Zhang, Ao Xia, Dunxue Yao, Xiaobo Guo, Su Shiung Lam, Yun Huang, Xianqing Zhu, Xun Zhu, Qiang Liao
Summary: The development of microalgae-bacteria symbiosis for treating wastewater is thriving due to its high biomass productivity and exceptional ability to purify contaminants. A nature-selected microalgae-bacteria symbiosis, primarily consisting of Dictyosphaerium and Pseudomonas, was utilized to treat wastewater containing oxytetracycline (OTC), ofloxacin (OFLX), and antibiotics. Higher antibiotic concentration gradually reduced biomass productivity and altered the composition of the symbiosis, while a low concentration of OTC accelerated symbiosis growth. The symbiosis exhibited excellent capacity in removing various pollutants in swine wastewater, including chemical oxygen demand, total ammonia nitrogen, total phosphorus, OTC, and OFLX.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Shuai Wu, Jingmiao Zhang, Ao Xia, Yun Huang, Xianqing Zhu, Xun Zhu, Qiang Liao
Summary: Microalgae-based technology is an environmentally friendly, low-cost, and efficient approach for treating oxytetracycline (OTC) wastewater. This study found that the growth of microalgae was promoted at OTC concentrations below 50 mg L-1, but significantly inhibited at concentrations higher than 100 mg L-1. The removal of OTC by microalgae was mainly attributed to photolysis, biodegradation, biosorption, and hydrolysis. The study confirms that microalgae can be an excellent technology for treating antibiotics wastewater while accumulating microalgae biomass.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Jingmiao Zhang, Ao Xia, Huize Chen, Abdul-Sattar Nizami, Yun Huang, Xianqing Zhu, Xun Zhu, Qiang Liao
Summary: A green hydrothermal process was used to produce biobased nanomaterials carbon dots (CDs) using microalgae Chlorella pyrenoidosa (CP) and its main model compounds. The reaction pathway for the hydrothermal process to produce microalgae-based CDs was proposed. Interactions among carbohydrates and proteins were found to be vital intermediate reactions in the generation of CDs. The CDs emitted blue fluorescence and displayed high sensitivity in detecting Fe3+ in wastewater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Polymer Science
Jingmiao Zhang, Naruhito Hori, Akio Takemura
Summary: Oilseed rape straw, rice straw, wheat straw, and corn stover particles were used to reinforce bio-polyols based polyurethane (PU) foams. The influence of crop straws fillers on the stability in water, degradability in soil, thermal stability, and elasticity of foams were investigated. The results showed that the addition of oilseed rape straw and corn stover particles increased the stability of foams in water, while wheat straw and rice straw particles decreased the stability. The reinforced foams showed higher stability under heating, but this enhancement trend disappeared after water immersion or soil burying. Oilseed rape straw and corn stover particles improved the elasticity of the foams, while wheat straw and rice straw particles initially decreased and then enhanced the recovery percentage during compressions.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Proceedings Paper
Engineering, Mechanical
Jingmiao Zhang, Zhiwei Zhong, Dapan Zhu, Linman Lin, Qingju Wang, Qiaoyun Tang, Zhiming Luo, Liyi Ye
ENVIRONMENTAL TECHNOLOGY AND RESOURCE UTILIZATION II
(2014)
Article
Agricultural Engineering
Jingmo Zhou, Shubin Wu, Ying Liu
Summary: Expenditure isolation of lignin and the understanding of its structural variations during different isolation processes are crucial for the high-value utilization of lignin. This study proposed a green deep eutectic solvent (DES) consisting of choline chloride, ethylene glycol, and 4-chlorobenzene sulfonic acid for rapid lignin separation from poplar. The structural variations of DES lignin and its relationship with alkali pre-extraction of hemicellulose were investigated. The results showed that alkali pretreatment enhanced the DES separation of lignin and promoted the cleavage of specific linkages, resulting in reduced molecular weight and thermal stability of isolated DES lignin. Moreover, DES lignin obtained from integrated utilization displayed higher purity and S/G ratio compared to lignin obtained from direct DES treatment.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Yuping Li, Ziyan Xie, Yun Huang, Jiangyi Zeng, Chao Yang, Ling Yuan, Ying Wang, Yongqing Li
Summary: In this study, the characteristic flavonoids (CFs) of three licorice species were identified through integrated metabolic and transcriptomic analysis. The key regulators of CF biosynthesis were also identified. These findings provide valuable information for understanding the biosynthesis of CFs and future breeding of Glycyrrhiza varieties.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Xianjie Pan, Zhaoyi Luo, Fanqi Liu, Quanqian Yi, Yanning Zeng
Summary: This study presents a novel strategy for fabricating fully bio-based epoxy vitrimers using peach gum and itaconic acid, which exhibit superior mechanical properties and thermostability. The materials were characterized and the self-healing and recycling capabilities were evaluated. The results demonstrate the potential of using these materials for sustainable industrial applications.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Mohsen Sabzi-Nojadeh, Mohammad Pouresmaeil, Mina Amani, Mehdi Younessi-Hamzekhanlu, Filippo Maggi
Summary: This study shows that inoculating Summer savory plants with endophytic fungus Trichoderma harzianum can improve plant growth and increase salt tolerance. The fungus enhances growth, restores chlorophyll and antioxidant levels, reduces harmful substances, and increases proline and soluble sugar levels, thereby increasing crop productivity in saline conditions.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Yu Liu, Lei Li, Aichen Zhao, Xiuming Song, Lulu Wei, Mengdi Fang, Chuchu Zheng, Xiaodong Zhu
Summary: This study investigates the impact of peppermint essential oil microcapsules on the unpleasant odor emissions from wax oil coated wood products. The results show that microcapsules can improve the time and stability of odor release.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Mesut Budak, Mirac Kilic, Hikmet Guenal, Ismail Velik, Mesut Sirri
Summary: This study assessed land suitability for rapeseed production using topography, climate, and soil data by analytical hierarchy process (AHP) and the Mamdani Fuzzy Inference System (MFIS). The study area covered land in the Diyarbakir province of southeastern Turkiye. The results indicated the proportions of different land suitability classes and showed the compatibility of AHP and MFIS methods in assessing suitability.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Rui Tian, Yue Liu, Chao Wang, Weikun Jiang, Srinivas Janaswamy, Guihua Yang, Xingxiang Ji, Gaojin Lyu
Summary: In this study, hollow and solid lignin nanoparticles were synthesized through self-assembly and their application in PVA nanocomposite films was investigated. The results showed that the presence of hollow lignin nanoparticles in the films resulted in a room-like network structure, while the solid lignin nanoparticles induced different structural changes. The inclusion of LNPs improved the mechanical properties of the films, and both types of LNPs exhibited good hydrophobicity.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Marcos Vinicius Silva de Andrade, Simone Ribeiro Lucho, Renato Delmondez de Castro, Paulo Roberto Ribeiro
Summary: Stevia rebaudiana Bertoni, commonly known as stevia, is a widely cultivated shrub with highly sweetening metabolites. It has gained significant interest in the food and beverage industries due to its extremely sweet taste and various health benefits. Researchers are currently focused on studying biotechnological strategies to enhance the biosynthesis of stevia plant metabolites for improved cultivation and production.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Eleonora Cintura, Paulina Faria, Luisa Molari, Luca Barbaresi, Dario D'Orazio, Lina Nunes
Summary: This study investigated the properties of Arundo donax as a building material and found that it has strong adaptability, high hygroscopicity, and unique sound absorption behavior. The mechanical tests also demonstrated the applicability of the Arundo donax-based composite. This opens up new possibilities for the further application of Arundo donax-based materials.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Stiina Kotiranta, Juha-Matti Pihlava, Titta Kotilainen, Pauliina Palonen
Summary: The effect of light spectra, particularly far-red and short wavelength radiation, on the growth and secondary metabolites of cannabis is significant. Altering the R:FR ratio can increase the concentration and yield of secondary metabolites, while short wavelength radiation does not significantly affect plant morphology and secondary metabolite concentrations.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Xuze Liu, Fangmin Liang, Jinyuan Cheng, Xuelian Zhou, Jia Wang, Guigan Fang, Kuizhong Shen, Xianzhi Meng, Chen Huang, Arthur J. Ragauskas
Summary: A novel Na2S-facilitated DES pretreatment method was proposed to fractionate moso bamboo, which achieved high lignin removal and preserved most cellulose and hemicellulose with excellent enzymatic digestibility.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Zechun Ren, Xinyuan Zhou, Kejiao Ding, Tong Ji, Hao Sun, Xiang Chi, Yunzhao Wei, Min Xu
Summary: This study prepared a thermal/magnetic/light-triggered multi-stimuli responsive shape memory polymer composite with excellent properties by adding magnetic nanoparticles into a polyurethane composite. The composite showed high shape recovery rate, fast response behavior, and suitability for 3D printing. Controllable external stimuli allowed for dynamic, remote, and precise control of 4D transformations. This work is significant for the design of smart materials and devices.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Yurany Camacho Ardila, Jaiver Efren Jaimes Figueroa, Maria Regina Wolf Maciel
Summary: The higher heating value (HHV) and elemental composition are important properties of biomass, and their prediction using proximate and ultimate analysis is accurate.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Xiaohan Chen, Xianke Wang, Lili Shang, Xinxin Ma, Changhua Fang, Benhua Fei, Huanrong Liu, Shuqin Zhang
Summary: This study focuses on the comprehensive characterization of the three-dimensional (3D) structure of bamboo parenchyma and the evaluation of its tensile and compressive properties, as well as the analysis of its failure mechanisms. The study found that the measured tensile strength and elastic modulus of the parenchyma tissue are 48.81 MPa and 706.48 MPa, respectively. Compression failure modes in parenchyma tissue encompass compression bending and cell fracture, shear failure of the middle lamella, and detachment and debonding of the cell wall.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Tianfeng Liu, Yuxin Liu, Yunlin Fu, Mengji Qiao, Penglian Wei, Zhigao Liu, Yingjian Li
Summary: This study explored the formation mechanism of agarwood induced by fungus and its potential application in high-quality and high-yielding agarwood production. The results showed that the transition layer played a critical role in the continuous accumulation of agarwood, and the parenchyma cells of the xylem rays and interxylary phloem were the main action site of fungus. The accumulation and distribution of chemical composition in different layers were also investigated. The study identified the drivers of specific compounds and provided a theoretical foundation for future agarwood production.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
