ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Pengli Zhang,Guoliang Zhang,Jiansen Pan,Chunfeng Ma,Guangzhao Zhang
Flexible hard coatings with strong adhesion are critical requirements for several foldable devices and marine applications; however, only a few such coatings have been reported. Herein, we report a non-isocyanate polyurethane (NIPU) coating prepared by the epoxy–oligosiloxane nanocluster–amine curing reaction and cyclic carbonate–amine polyaddition, where the former provides the coating with ceramic-like hardness and polymer-like flexibility while the latter polymerization results in NIPU with strong substrate adhesion. The coating is transparent (>92% transmittance), hard (5–7 H), and flexible (2 mm bending diameter). It has strong adhesion to various substrates including aluminum alloy, titanium, steel, glass, ceramic, epoxy, and polyethylene terephthalate (2–8 MPa), which can be attributed to the high density of polar groups in NIPU. Moreover, we can facilely endow the coating with anti-icing, self-cleaning, and anti-smudge capabilities by incorporating amine-terminated low-surface-tension polydimethylsiloxane (PDMS) to replace a part of the amine curing agent. Particularly, the mechanical properties of NIPU coatings are only slightly affected by the introduction of low-content PDMS since it intends to enrich on the surface. The novel coating has promising future for use in fields of foldable devices and marine applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Danqing Song,Qiqi Xie,Jiaying Zhang,Bing Wang,Yi Liu,Sheng Chen,Liuchun Zheng
The synthesis of traditional polyurea (PUR) involves toxic, hazardous, and harmful isocyanates. Sustainable biobased feedstocks are significant for future industrial development. A range of nonisocyanate poly(amide-urea) (NIPURs) are obtained by melt polycondensation from biobased dicarboxylic acids, urea, and diamines without catalysts and high pressure. Excessive hydrogen bonding in NIPURs leads to high crystallinity, which renders it difficult to obtain a polymer material with both high strength and satisfactory toughness. The hydrogen bonding content and distribution can be regulated by changing the molar ratio of dicarboxylic acids/urea and the structure of the dicarboxylic acids. It is remarkable that NIPURs exhibit excellent mechanical and thermal properties. Its yield strength is up to 61 MPa, tensile strength is as high as 7069 MPa, and it maintains an elongation at break of 241%; its melting point ranges from 166 to 200 °C and it maintains initial decomposition temperature (T5%) higher than 345 °C. The adjustable mechanical and thermal properties of NIPURs offer significant potential for various applications. This work could provide new insights into designing PUR with enhanced mechanical properties.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2023
·Vol. 63
·期 5
·1507-1515
·
IF 3.2
Heng Li,Fang-Yu Ren,Hong-Ru Li,Liang-Nian He
Biomass-based polymers and their property regulation using functional materials have attracted much interest. In this work, ricinoleic acid-derived cyclic carbonate was prepared and applied to the synthesis of nonisocyanate polyurethane (NIPU) with aliphatic diamine, in which octa(aminopropyl) polyhedral oligomeric silsesquioxane (OAP-POSS) was incorporated as polyamine to partially or totally substitutes for the diamine to introduce POSS units into the polymer thus regulating the properties of the resultant material. In the curing process, Fourier transform infrared spectroscopy (FT-IR) was used to track the reaction and curing at 50°C for 12 h was found to be sufficient for the polymerization. A series of POSS modified NIPUs were obtained by altering the molar fraction of OAP-POSS in total amine components and the material with the highest thermal stability, shore hardness and water resistance was accessed with 100% substitution of OAP-POSS for diamine.
研究领域:
材料科学
·
生物质化学
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Zhaosheng Huang,Hanxiang Guo,Hao Yuan,Yizhong Cao,Zhe Wang,Chunde Jin
In recent years, excessive use of petroleum resources is one of the culprits behind environmental pollution and the greenhouse effect. CO 2 , functioning as a sustainable resource within the carbon cycle, can be converted into high-value-added products. Bio-based raw materials are increasingly being valued due to their advantages of being able to replace harmful materials and promote sustainable green development. The synthesis of non-isocyanate polyurethanes(NIPUs) which use cyclic carbonate as raw material is an effective way to achieve carbon sequestration. Herein, the. NIPUs adhesive was synthesized from glycerol triglycidyl ether, CO 2, bio-based diamine Priamine 1074 extracted from vegetable oil and Diethylenetriamine(DETA) by a relatively green synthesis route. The synthetic NIPU(5 %) adhesive exhibits a good wet bonding strength of 1.44 MPa, showing a relative increase of 17.3 % compared to NIPU(0 %) as well as low-temperature resistance performance. This study provides a new idea for enhancing bonding performance of bio-based NIPUs adhesives through high density hydrogen bonds by controlling the hard segment and special soft segment content as well as expanding bio-based NIPUs’ applications in adhesive industries.
研究领域:
材料科学
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Zifei Ren,Jie Liu,Wei Wang,Yanshai Wang,Yang Li,Xuefei Leng
Nonisocyanate polyurethanes (NIPUs) synthesized via cyclic carbonates and amines offer a sustainable alternative but often suffer from low performance when derived entirely from biobased feedstocks. This work introduces high strength and recyclable fully biobased NIPUs using resveratrol (RE)-derived cyclic carbonate and magnolol-based quaternary cyclic carbonate (MAG-QCC) to cure with Priamine 1074. By introducing rigid aromatic and conjugated structures, resveratrol-based polyhydroxyurethanes (REPHUs) and magnolol-based polyhydroxyurethanes (MAGPHUs) achieved the highest tensile strength of 31.4 MPa and a break elongation of 161%. After thoroughly investigating the molecular structures of two polyhydroxyurethane (PHUs), it was found that the planar conjugated aromatic structure of resveratrol in REPHUs, characterized by dihedral angles of 179.78 and 179.90°, leads to superior tensile strength and higher Tg compared to MAGPHUs, which are influenced by magnolol’s distorted biphenyl configuration with a dihedral angle of 39.72°. Additionally, dynamic carbamate and hydroxyl bonds enable efficient physical remolding, retaining more than 83% of the original tensile strength after reprocessing. The PHU network can be chemically degraded by alcoholysis, enabling closed-loop recycling. Notably, these materials exhibit fluorescence due to carbamate-induced clusteroluminescence, with the fluorescence intensity remaining constant even under deformation, demonstrating the potential for anticounterfeiting applications. This work explores an environmentally friendly way to synthesize high strength, recyclable cross-linked NIPUs from biobased sources, which broadens their applications in fields such as elastomers, packaging, and anticounterfeiting.
研究领域:
高分子化学
·
材料科学
·
可持续发展
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2025
·
IF 10
Zhaosheng Huang,Chen Qin,Hanxiang Guo,Hao Yuan,Yizhong Cao,Zhe Wang,Chunde Jin
Although Non-isocyanate polyurethane (NIPU) is a burgeoning environmental-friendly material, however, due to the water absorption capacity of NIPU, the wet bonding strength of NIPU was often not ideal when used as an adhesive in the field of wood-based panel. Amine terminated hyperbranched siloxane (HPSi), endows the material with excellent bonding properties, while combining the superiority of the rich and adjustable terminal groups of hyperbranched polymers as well as water proof properties of siloxanes. Therefore, the addition of HPSi during the synthesis of NIPU could enhance it's wet adhesive strength to a certain extent. In the study, the NIPU modified with HPSi (NIPU.Si) adhesives were synthesized from glycerol triglycidyl ether, CO 2, bio-based diamine Priamine 1074 extracted from vegetable oil, Diethylenetriamine(DETA) and Amine-terminated Hyperbranched Siloxane (HPSi) synthesized by (3-Aminopropyl)triethoxysilane(KH550) and Trimethoxyphenylsilane(PTMS) in a relatively sustainable synthesis route to improve the wet bonding strength of NIPU. The synthetic NIPU.Si(5 %) adhesive exhibits a good wet bonding strength of 1.93 MPa, representing a 34.0 % growth compared to NIPU.Si(0 %). Additionally, the synthetized NIPU.Si(5 %) adhesive shows wide applicability to different substrates, good adaptability to extreme cold temperatures, good adaptability to high temperatures aging as well as solvent resistance due to strong cohesion and high-density hydrogen bonds formed at the interface of the substrate. This study reports a new method to enhance the bonding performance of NIPU through introducing HPSi with high-density hydrogen bonds, avoids using any hazardous chemical raw materials and solvents, meets the criteria of cleaner production, further expands the application of NIPU in wood-based panel, cleaner production and other industries fields.
研究领域:
材料科学
·
高分子化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2023
·Vol. 63
·期 9
·3025-3036
·
IF 3.2
Xiang-nan Liu,Yuan-meng Wang,Xiang-yuan Li,Jun-ying Zhang,Jing-bo Zhao
A new synthesis route different from convenient epoxy/CO 2 method was established to synthesize a five-membered dicyclocarbonate of bisphenol A (BisA-5dCC), and its hybrid non-isocyanate polyurethanes with epoxy resins (HNIPUs) were reported. Bisphenol A was first reacted with 3-chloro-1,2-propanediol to prepare a bisphenol A tetraol (BisA-4OH), and then was reacted with excess diethyl carbonate to obtain BisA-5dCC. Three polyhydroxyurethanes with H 2 N-terminal groups (PHUs) were synthesized from the aminolysis polyaddition of BisA-5dCC and excess hexanediamine. The PHUs were crosslinked with 1,4-butanediol diglycidyl ether and bisphenol A diglycidyl ether, respectively, and different HNIPUs were prepared. The structures of BisA-4OH, BisA-5dCC, and PHUs were confirmed, and the HNIPUs were characterized by Fourier transform infrared, differential scanning calorimetry, dynamic mechanical analysis, thermogravimetric analysis, and tensile tests. HNIPUs prepared from aromatic epoxy showed higher T g (up to 81°C) and better tensile strength (as high as 60 MPa) than those from aliphatic epoxy. High-performance HNIPUs with excellent thermal and mechanical properties were successfully synthesized. Highlights Dicyclocarbonate of bisphenol A (BisA-5dCC) was prepared from a BisA tetraol. H 2 N-terminated PHUs were synthesized further from the aminolysis of BisA-5dCC. Hybrid non-isocyanate polyurethanes (HNIPUs) were obtained from PHUs and epoxys. HNIPUs prepared from aromatic epoxy showed high T g up to 81°C. They showed excellent tensile strength as high as 60 MPa.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2021
·Vol. 29
·期 6
·1880-1893
·
IF 3.667
Eltayeb Mohanad,Li SanXi,Okoye Patrick U.,Wang Song
The cyclic carbonates as non-isocyanate polyurethane (NIPU) precursors are usually prepared via CO 2 fixation under harsh conditions for a satisfactory conversion rate, which is energy-intensive. Herein, cyclic carbonate was prepared under ambient conditions with high purity and yield using a water-soluble ethyl-(N′,N′dimethylamino) propylcarbodiimide hydrochloride (EDC) to provide a favored industrialization method. The glycerol carbonate was reacted with a furan-based dicarboxylic acid using EDC to evolve cyclic carbonates, followed by the aminolysis with different chemical structural amines to produce bio-based NIPUs. The effects of the reaction parameters on the yield and purity of bis(cyclic carbonate) were investigated. The results showed that the synthesized bis(cyclic carbonate) have a purity of 99% and a yield of > 70%. The different structures of the diamines exhibited different reactivity and molecular weights in the order of multi-functional amine > linear amine > cyclic amine. All the synthesized furan-based NIPUs presented excellent thermal stability above 350 °C and glass transition temperature in the range of 51.9 °C to 99.6 °C. The result demonstrates the potential of this environmentally benign strategy to prepare high-performance bio-based NIPUs with interesting properties even for biomedical applications.
研究领域:
化学工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Yuemin Zhou,Fuhao Dong,Xingyu Chen,Xujuan Huang,Lizhen Guo,He Liu,Xu Xu
Non-isocyanate polyurethane (NIPU) has received wide attention as a material prepared from renewable resources. Nevertheless, due to its poor mechanical properties, NIPU is difficult to replace conventional polyurethane to achieve large-scale production and practical applications. Hence, using rosin derivatives as raw materials, biogenic cyclic carbonic acid esters were synthesized by carbon dioxide (CO 2 ) coupling reaction, and then cured with polyethylenimine (PEI) to form a new renewable NIPU thermosetting network without catalysts. The introduction of a rosin rigid structure and the formation of a hyperbranched structure make the obtained NIPU have excellent tensile strength (up to 40.50 MPa). Meanwhile, the hydrogenated phenanthrene ring structure of rosin restricts the movement of the NIPU chain, which leads to good thermal stability. Taking advantage of the transesterification of carbamates, the resultant NIPU exhibited self-healing, recyclability (recovery efficiency reached 89.50%), and shape memory. In addition, abundant polar groups endow NIPU with good adhesion strength. The innovative bio-based NIPU materials that are suggested in this work exhibit a variety of benefits, such as low curing temperature, outstanding mechanical properties, environment friendliness, and thermal stability, and have various applications in furniture and printing, adhesives, packaging materials, and other industries.
研究领域:
材料科学
·
可持续化学
·
生物质利用
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2023
·Vol. 224
·期 8
·2200448
·
IF 2.5
Yiyin Yang,Kangzhou Xie,Donglin Tang
Alcoholysis of bisureas (BUs) would be of great potential among the non-isocyanate routes for preparing polyurethanes, if the issue of the high melting temperature and the poor solubility for BUs can be solved. In this study, it is proposed to introduce Li salt to assist the melting of BUs via a eutectic system. It is found that the melting point of BUs indeed can be reduced to 170 °C or even lower by adding 40 mol% of LiCl or LiBr. In the polymerizations of BUs with diols, it is found that ZnO nanoparticles (30 ± 10 nm) are the most efficient catalyst in the catalyst screening study. Four polyurethanes are successfully synthesized and the glass transition temperature of them is detected to be 34–45 °C. PU1010 is tougher than other polymers so that it is able to be molded. The Young's modulus of PU1010 is 195.1 MPa, while the strength and the elongation at break are 36.4 MPa and 280%, respectively. The toughness calculated is 67.3 J cm −3 . This Li salt-assisted melting strategy not only realizes the synthesis of polyurethanes through alcoholysis of BUs, but can also be extended to the synthesis of other high performance polymers.
研究领域:
材料科学
·
聚合物化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Tonghe Zhang,Bailiang Xue,Quan Yan,Yue Yuan,Jiaojun Tan,Ying Guan,Jialong Wen,Xinping Li,Wei Zhao
The increasing demand of less toxic and non-dangerous chemicals for material preparation has boosted the development of non-isocyanate polyurethanes (NIPUs). Lignin, as a kind of natural and sustainable polymer, has been employed to replace traditional petroleum-derived chemicals for NIPUs synthesis. In this work, novel lignin/NIPU hybrid polymers (LNIPUs) were facilely synthesized from lignin, bis(6-membered cyclic carbonate) (6CC) and polyetheramine. The yielded hybrid polymers not only possess distinctive mechanical and thermal performance, but also exhibit a wide variety of smart properties including shape memory, self-healing and reprocessability. In addition, the synthetic product LNIPUs show outstanding adhesive properties with an adhesive strength of up to 24.5 MPa obtained from the aluminum plates bonding. This work provides a convenient way to endow lignin-containing NIPUs with excellent properties and simultaneously opens up promising applications of the resultant materials.
研究领域:
材料科学
·
化学工程
·
可再生资源利用
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Hao Liu,Lu Wang,Xiaoxue Zhang,Junbo Zang,Song Xu,Chunhong Zhang,Yuhui Ao,Weifeng Du,Lei Shang
The preparation of environmentally friendly and efficient waterborne polyurethane sizing agents for carbon fiber (CF) is difficult, especially to avoid the use of isocyanates. Herein, ellagic acid and CO 2 were used to prepare a five-membered cyclic carbonate compound (EARBO). The polymerization between EARBO and diamines enabled the preparation of highly efficient and green aqueous non-isocyanate polyurethane (WNIPU) sizing agents. WNIPU sizing agent exhibits excellent heat resistance (T 5% :244.5 °C). The hydroxyl group and tertiary amine effectively enhance the polarity and wettability of CF (CF surface energy is as high as 55.42 mJ/m 2 ) and show excellent compatibility with epoxy resin. Carbon fiber/epoxy composites treated with this sizing agent showed exceptional interfacial properties, achieving interfacial shear strength, ply shear strength, flexural strength, and tensile strength of 116.84 MPa, 71.58 MPa, 1352.79 MPa, and 1719.27 MPa, respectively—representing 112.05 %, 42.05 %, 86.68 %, and 87.11 % improvements over traditional composites. The WNIPU sizing agent’s efficiency and environmental advantages indicate it as a promising alternative to commercial polyurethanes.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）