Article
Polymer Science
Andrzej Puszka, Janusz W. Sikora
Summary: In this study, new segmented poly(thiourethane-urethane)s (PTURs) were synthesized using a one-step melt polyaddition method. The effects of changes in the hard segment (HS) content on the properties of the PTURs were investigated. The results showed that the properties of the PTURs improved with increasing HS content, as confirmed by various analyses.
Article
Materials Science, Multidisciplinary
Suzuka Takeuchi, Akinori Takasu
Summary: We synthesized dianhydro sugar-based diacrylate monomers and poly(ester-urethane)s and evaluated their biodegradability in activated sludge, finding that certain polymers exhibited significant biodegradation.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Youwei Ma, Xuesong Jiang, Jie Yin, Christoph Weder, Jose Augusto Berrocal, Zixing Shi
Summary: Chemical upcycling of polymers has become an emerging strategy to convert post-consumer waste into valuable chemicals and materials. However, due to the high stability of the chemical bonds in many polymers, their chemical modification is often challenging. In this study, a versatile approach for the upcycling of linear and cross-linked polyureas was developed using acetylacetone. The resulting compounds can be reacted with aromatic isocyanates to form highly dynamic aminoketoenamide bonds, enabling the preparation of healable and reprocessable poly(aminoketoenamide) networks through thermal treatment without any catalyst.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Multidisciplinary
Bai Shan, Zhang XiangYu, Zang LeiLei, Ren LiXia, Yuan XiaoYan
Summary: This study demonstrates the potential of using L-arginine-based poly(ester urethane)urea (PEUU) with biodegradable poly(c-caprolactone) (PCL) for vascular grafts. By blending electrospinning with PCL in a given mass ratio, the prepared electrospun PCL/PEUU fibrous membranes show suitable mechanical properties and cell proliferation ability. The PEUU50 electrospun membrane with 1/1 mass ratio of PCL/PEUU exhibits flexibility and mechanical properties matching native blood vessels.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Review
Polymer Science
Maria Dolores de Dios Caputto, Rodrigo Navarro, Juan Lopez Valentin, Angel Marcos-Fernandez
Summary: The circular economy is a necessary path for society, governments, and businesses to develop a viable and sustainable model for plastic production. Improving the recycling rate of plastic waste is crucial in addressing the issue of inadequate waste treatment and management, in order to obtain high added-value products through upcycling processes.
JOURNAL OF POLYMER SCIENCE
(2022)
Article
Polymer Science
Boris Bizet, Etienne Grau, Henri Cramail, Jose M. Asua
Summary: The waterborne isocyanate-free grafted poly(hydroxy urethane)-poly(butyl methacrylate) hybrid dispersions were synthesized by miniemulsion polymerization, with the grafting induced by methacrylate functionalities in the poly(hydroxy urethane) and controlled by the degree of functionalization. It was found that grafting allowed for fine tuning of the mechanical properties of the PHU-containing hybrids.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Engineering, Environmental
Weihao Zhang, Tongyao Wang, Zhanhong Zheng, Rafael L. Quirino, Fei Xie, Yufeng Li, Chaoqun Zhang
Summary: This study successfully prepared green and safety plant oil-based non-isocyanate waterborne polyurethanes by carbonating linseed oil and polymerizing it with different diamines and hydrophilic moiety. Aromatic diamines, aliphatic diamines, and poly-ether diamines were used as chain extenders to tailor the performance of the resulting polyurethanes, and the robustness of the preparation route was evaluated.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Andrzej Puszka, Janusz W. Sikora
Summary: New segmented poly(thiourethane-urethane)s (SPTURs) with high molar masses were synthesized by reaction, showing good thermal and mechanical properties as well as adhesion. These SPTURs exhibit high resistance to hydrolysis and are hydrophilic in nature.
Article
Chemistry, Applied
Annesha Kar, Muzamil Ahmad Rather, Manabendra Mandal, Niranjan Karak
Summary: Poly(ester amide urethane) resins were synthesized to overcome the shortcomings of poly(ester amide) and impart new features. The synthesized material showed excellent elongation, toughness, thermal stability, and chemical resistance. Aging tests proved their enhanced tensile strength parameters, making them suitable for outdoor applications. They also demonstrated good biodegradability and cytocompatibility.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Polymer Science
Zi-Yun Shen, Qi-Yong Mei, Yi Liu, Liu-Chun Zheng, Chun-Cheng Li, Jia-Jian Liu, Yao-Nan Xiao, Shao-Hua Wu, Bo Zhang
Summary: A series of non-isocyanate linear high molecular weight poly(ester urethane)s (PETUs) were prepared through an environmentally-friendly route, and their properties were characterized. The results showed that PETUs have high molecular weights and tensile strength, with the degree of phase separation being affected by crystallization and hydrogen bonding interaction.
CHINESE JOURNAL OF POLYMER SCIENCE
(2022)
Article
Engineering, Biomedical
Leilei Zang, Quhan Cheng, Shan Bai, Kai Wang, Xiaoyan Yuan
Summary: Bioactive fibrous scaffolds were developed from carboxylated poly(ester urethane)urea (PEUU) and gelatin (Gel) by encapsulating pterostilbene (Pte) for the first time. These electrospun membranes exhibited self-adaptable mechanical properties with high elasticity and promoted in vitro cell proliferation, antioxidant effects, and anti-inflammatory responses. The specially prepared PEUU/Gel/Pte scaffold showed potential applications in tissue regeneration, especially vascular regeneration.
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
(2023)
Article
Chemistry, Multidisciplinary
Wen-Hao Xu, Lin Chen, Shun Zhang, Rong-Cheng Du, Xuehui Liu, Shimei Xu, Yu-Zhong Wang
Summary: Accumulation and mishandling of post-consumer polymers have caused environmental concerns globally. Chemical recycling is a promising strategy to convert waste polymers into valuable substances. The study shows that the presence of spandex has a significant impact on the chemical recycling of polyester, resulting in decreased recovery rate and non-compliance with color standards. The main depolymerization reaction of spandex is urethane alcoholysis. It is also discovered for the first time that amide-esterification reaction occurs during urethane alcoholysis, challenging the previous understanding of the process.
Article
Polymer Science
Liliana Rosu, Cristian-Dragos Varganici, Dan Rosu, Stefan Oprea
Summary: The study demonstrates that poly(ester urethane) elastomers designed as damping materials for railways maintain good mechanical properties after 200 hours of thermal aging at elevated temperatures, but significant changes in thermo-mechanical and optical properties occur with increasing time and temperature.
Article
Polymer Science
Juan He, Yongliang Ding, Feng Jiang, Zhongkai Wang
Summary: In this work, sustainable high-performance PEAs were prepared using plant oil as a renewable resource. The hydrogen bonding formed by ester, amide, and carboxyl groups in PEAs provides strong cohesion and interfacial adhesion, making them suitable for hot melt adhesive applications. The mechanical properties of PEAs can be manipulated by adjusting their compositions and cross-linking densities. These PEAs are thermally stable and exhibit outstanding adhesion behavior, even at extremely low temperatures such as liquid nitrogen (-196 degrees C). The combination of renewable plant oil and PEAs opens up new possibilities for designing bio-based reusable low-temperature tolerant adhesives.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Polymer Science
Jingjing Bi, Yifan Liu, Jiaxu Liu
Summary: The article describes a simple methodology to prepare cost-effective biodegradable poly(ester urethane)s (PEUs) with ordered hard segments (OHS) for long-term medical implants. The introduction of OHS contributes to improved physical and chemical features of PEU films, including tensile strength, water absorption, and degradation rate. PEUs also exhibit good cytocompatibility.
Article
Chemistry, Multidisciplinary
Arunima Reghunadhan, Janusz Datta, Maciej Jaroszewski, Nandakumar Kalarikkal, Sabu Thomas
ARABIAN JOURNAL OF CHEMISTRY
(2020)
Article
Engineering, Environmental
Ewa Glowinska, Wojciech Wolak, Janusz Datta
Summary: The research focused on the synthesis and properties examination of partially bio-based thermoplastic polyurethane elastomers. By using different diisocyanate mixtures, the study analyzed the chemical structure, thermal, thermomechanical, mechanical, and physicochemical properties of the materials.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Chemistry, Physical
Ewa Glowinska, Paulina Kasprzyk, Janusz Datta
Summary: The study focuses on the preparation of novel bio-based thermoplastic polyurethane elastomers (bio-TPUs) using a diisocyanate mixture. By controlling the composition of biobased hard blocks (HS) and soft blocks (SS), the properties of bio-TPUs can be tailored effectively. The results indicate that increasing the bio-based diisocyanate content enhances the thermal stability and mechanical properties of bio-TPUs, showing promise for the development of fully bio-based polymeric materials.
Article
Polymer Science
Paulina Kasprzyk, Ewa Glowinska, Janusz Datta
Summary: This study confirmed the positive impact of high bio-based monomer content on the processing and properties of polyurethane materials. Partially bio-based TPUs were obtained from bio-based and petrochemical-based polyols, demonstrating comparable mechanical and thermo-mechanical properties, as well as increased eco-friendliness.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Paulina Kasprzyk, Ewa Glowinska, Paulina Parcheta-Szwindowska, Kamila Rohde, Janusz Datta
Summary: This study focuses on green thermoplastic polyurethanes (TPU) obtained by controlling the chemical structure of flexible segments using bio-based polyether polyols. By adjusting the number of flexible segments of a given type, various selected properties of TPU materials can be achieved. Increasing the amount of PO3G1000 in the flexible segments enhances the tensile strength but reduces the elongation at break of TPUs.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
Izabela Zagozdzon, Paulina Parcheta, Janusz Datta
Summary: The study showed that adding phosphorus-containing polyol in polyurethane synthesis can improve the flame resistance and char yield of the material, as well as providing better thermal stability.
Article
Chemistry, Multidisciplinary
Ana M. Borreguero, Irene Izarra, Ignacio Garrido, Patrycja J. Trzebiatowska, Janusz Datta, Angel Serrano, Juan F. Rodriguez, Manuel Carmona
Summary: Polyurethane (PU) is a principal polymer in the global plastic market due to its versatility and continuous improvement. In this study, PU elastomeric materials with thermoregulating properties were produced by incorporating microcapsules (mSD-(LDPE center dot EVA-RT27)) containing paraffin(R)RT27 into the matrix. The density and tensile strength decreased with increasing microcapsule content, with E-1.05 showing better structural and stability properties for microcapsule contents up to 15 wt.% and E-1.1 displaying mechanical and thermal synergy effects with 20 wt.% microcapsule content.
APPLIED SCIENCES-BASEL
(2021)
Article
Biochemistry & Molecular Biology
Joanna Niesiobedzka, Ewa Glowinska, Janusz Datta
Summary: This study investigated the relationship between the chemical structure and the thermal and processing parameters of bio-based isocyanate-terminated ether and ester-urethane prepolymers. It was found that the composition of the bio-based prepolymers, as well as the content of iso-cyanate groups, had significant impacts on their processability. Prepolymers based on poly-ether polyol showed lower viscosity at lower temperatures compared to those based on polyester polyol, with viscosity values depending on the NCO content.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Forestry
Ewa Glowinska, Paulina Kasprzyk, Janusz Datta
Summary: This study focuses on the synthesis of bio-PU composites filled with powdered cellulose and investigates the influence of cellulose on the phase separation between soft and hard segments of bio-PU through analyzing the chemical structure, morphology, thermal and mechanical properties of the composites.
WOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Marcin Wloch, Paulina Landowska
Summary: Bio-based fillers for polymer composites are still of interest due to their low cost and renewable nature. In this study, partially green composites were prepared using thermoplastic poly(ester-urethane) mixed with unmodified and modified grinded buckwheat husks. The results showed that the introduction of buckwheat husks retained high tensile strength but decreased elongation at break. The chemical treatment altered the mechanical properties of the filler and composites.
Article
Thermodynamics
Paulina Parcheta-Szwindowska, Kamila Rohde, Janusz Datta
Summary: Non-isocyanate polyurethanes (NIPUs) are eco-friendly materials synthesized without the use of phosgene, and their production process involves the reaction with carbon dioxide. In this study, NIPUs were successfully obtained through a three-step synthesis pathway using epichlorohydrin. The properties and structures of the obtained materials were compared, and it was found that NIPUs prepared with petrochemical-based epichlorohydrin had lower thermal decomposition activation energy compared to their bio-based counterparts.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Chemistry, Physical
Joanna Smorawska, Marcin Wloch, Ewa Glowinska
Summary: This study investigates the effects of multiple processing on bio-based thermoplastic polyurethane elastomers (bio-TPUs). The research found that reprocessing led to changes in the phase separation between the hard and soft segments, resulting in differences in the mechanical properties of the materials. Although there were slight differences in the chemical and thermal properties, the main distinctions were observed in the mechanical properties, with an increase in tensile strength and elongation at break, and a decrease in hardness. The prepared bio-TPUs exhibited characteristics that were closer to those of sustainable materials, promoting the circular economy of plastics.
Review
Chemistry, Multidisciplinary
Joanna Niesiobedzka, Janusz Datta
Summary: Polyurethanes (PUs) are important in the plastics industry and their global market value reached $95.13 billion in 2019 with an expected compound annual growth rate of 12%. Research on green alternatives to fossil-based isocyanates has been increasing due to environmental concerns. However, there is a lack of comprehensive reports or reviews in the field of green PUs.
Article
Polymer Science
Kamila Blazek, Hynek Benes, Zuzana Walterova, Sabina Abbrent, Arantxa Eceiza, Tamara Calvo-Correas, Janusz Datta
Summary: This research focused on the synthesis of bio-based cyclic carbonates using CO2 as a green feedstock and bio-based polyether polyols, aiming to minimize negative environmental impact by implementing solvent-free conditions. The synthesized products were analyzed using various spectroscopy techniques and mass spectrometry, and were successfully used for the preparation of non-isocyanate polyurethane (NIPU) thermosets with potential applications in sound absorbing materials.