CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Tengning Ma,Hong Luo,Weiyuan Zhou,Huijuan Zhang,Rui Yuan,Qing He,Ying Huang,Li Yang,Guanjun Chang
Counterfeiting and information leakage have become critical global challenges, exacerbated by rapid technological advancements. This study presents a novel stimuli-responsive polymer, poly(imino sulfone) (PIS), synthesized via a simple C-N coupling reaction. The findings reveal that PIS exhibits fast, high-contrast, reversible color and fluorescence dual-mode stimuli-response, driven by the protonation-deprotonation of imine groups under varying acid-base conditions. Additionally, the rigid polymer structure, coupled with strong hydrogen bonding, imparts PIS excellent thermally stable (T 5% = 463 °C, T g = 245 °C), surpassing other polymers with stimulus-responsive discoloration capabilities. Notably, even at low concentrations (0.1 wt%), PIS demonstrates strong emission performance and stimulus-induced color-change behavior. The information encoded using PIS can be efficiently and repeatedly encrypted and decrypted under acid-base stimuli, thereby enhancing the confidentiality and security of the information. When integrated into polymer matrices, PIS not only imparts quick, stable and reversible dual-mode stimulus-responsive behavior but also enhances the thermal and mechanical properties of the host materials. The resultant PIS-based patterns exhibit excellent anti-counterfeiting performance. These unique properties position PIS as a promising candidate for advanced anti-counterfeiting and encryption applications.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULES
·
2020
·
IF 5.918
Sheng Wang,Songqi Ma,Qiong Li,Xiwei Xu,Binbo Wang,Kaifeng Huang,Yanlin liu,Jin Zhu
Vitrimers undergoing dynamic bond exchange enable reprocessing and recycle of thermosets. However, vitrimers are susceptible to creep, leading to their poor dimensional stability, which limits their applications. Here, a facile method via integration of metal complexes was utilized to address this issue, and cross-linked polyimine was selected as an example of vitrimer. Three different metal complexes were introduced into a polyimine vitrimer via a one-pot preparation involving the formation of metal complexes and cross-linking of polyimine. The addition of 0.5 mol % Cu2+ relative to imine bond reduced creep degree from 30% to 20% at 60 °C, and the creep resistance was enhanced with increasing Cu2+ content. Loading 5 mol % Cu2+ increased the initial creep temperature from 60 to about 100 °C and raised the Arrhenius activation energy (Ea) for stress relaxation from 52.3 to 67.7 kJ mol–1. The ability of different metal complexes to suppress creep followed the order of Fe3+ > Cu2+ > Mg2+, and the initial creep temperature reached around 120 °C for vitrimer with 5 mol % of Fe3+. Meanwhile, the polyimine–metal complex vitrimers still exhibited excellent reprocessing recyclability. Moreover, the introduction of coordination structures enhanced the thermal and mechanical properties, solvent, and acid resistance. Thus, metal coordination is an efficient approach to achieve high-temperature creep resistance, excellent thermal and mechanical properties, and chemical stability for vitrimers based on the Schiff base.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Leyi Lin,Zhiping Su,Haishan Zhang,Guowen Zhou,Haonan Zhou,Junli Ren,Xiaoying Wang,Chuanfu Liu,Xiaohui Wang
The increasing environmental burden generated by disposable plastic wastes makes the development of sustainable substitute materials an emergent task. As one of the most abundant bioresources, chitosan (CS) has been considered as a potential candidate for plastic substitution. Conventionally, CS-based materials are fabricated through a solution-processing procedure due to the high crystallinity of CS. Herein, we designed a CS-based material via integrating CS into the network of polyimine (PI), which shows thermomechanical processability similar to plastics. Strong interactions were achieved through dynamic imine bond and hydrogen bond and thus formed a thermo-processable dynamic composite network. These CS-based plastic substitutes exhibit exceptional mechanical performances, excellent thermal/chemical stability, and a series of self-adaptiveness, including re-healing, reprocessing and multi-layer laminating. Notably, CPs can be easily degraded and 100% recycled for the production of next-generation materials. This work provides an alternative route to produce green and sustainable biomass materials as a plastic substitute.
研究领域:
材料科学
·
生物工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBON
·
2022
·
IF 11.307
Zirun Chen,Junlong Huang,Yin Cui,Ruowen Fu
Metal sulfide/carbon superstructures are a new class of functional materials for various energy applications due to their strong synergistic effect and favorable geometry. However, developing a controllable way to synthesize metal sulfide/Carbon superstructures with high N doping , well-designed 3D superstructure and refined metal sulfide nanoparticles remains a big challenge. Herein, we report a one-pot synthesis of metal sulfide/carbon flower-like superstructures (M x S y /CFSs) by using metal ion doped polyimine. The morphology of polyimine can be easily tuned by choosing different solvents or different amino monomers . The presence of imine bond and thiophene in polyimine not only can coordinates with metal ion and transforms them into metal sulfide during carbonization , but also provides high N and S doping for the M x S y /CFSs. Benefiting from the advantages of these structures, multiple M x S y /CFSs (such as FeS/CFSs, Co 9 S 8 /CFSs, Ni 3 S 2 /CFSs, and MnS/CFSs) with high N doping , uniform metal sulfide nanoparticles and hierarchical superstructures were fabricated by directly carbonizing metal ion doped polyimine flower-like superstructures in nitrogen atmosphere. The as-prepared Co 9 S 8 /CFSs exhibits superior sodium storage properties with stable cycling performance and excellent rate capacity. This new finding provides a novel strategy to controllably design and produce metal sulfide/carbon flower-like superstructures for the applications in energy storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Qirui Huang,Wei Hong,Haiyue Wang,Changyi You,Cai Liu,Lele Zhang,Li Yang,Xuzhou Yan,Ping Yu
Polyimine aerogels, composed of covalent adaptive networks enriched with dynamic imine bonds, have shown remarkable recycling and reprogramming capabilities, marking a notable advancement in the field. However, these aerogels are challenged by inherent hydrophilicity and difficulties in achieving homogeneous nanostructures. Here, we synthesized a series of siloxane (Si)-based polyimine aerogels (Si-DPAs) with a pearl necklace-like microstructure using readily available commercial monomers and an ambient pressure synthesis method. The resultant lightweight Si-DPAs exhibit high flexibility, crimpability, and a high degree of compressibility (up to 80% strain) with a water contact angle of 136°. Moreover, Si-DPAs exhibit chemical degradability and diverse recyclability. They can be promptly employed to fabricate homogeneous films, dynamic aerogels, and recovered adhesives (with a lap shear strength of 4.0 MPa). Additionally, they demonstrate high-value applications in oil–water separation and thermal insulation. This work underscores the potential for the scalable production of polyimine aerogels and suggests avenues for broadening their application spectrum.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·Vol. 20
·期 51
·2406821
·
IF 13
Zichen Jia,Haiyue Wang,Ping Yu,Hongfei He,Qirui Huang,Wei Hong,Cai Liu,Yanji Shi,Jue Wang,Yumeng Xin,Xuemeng Jia,Juanjuan Ma,Bin Yu
Reversible and recyclable thermosets have garnered increasing attention for their smart functionality and sustainability. However, they still face challenges in balancing comprehensive performance and dynamic features. Herein, silicon (Si)─oxygen (O) and imidazole units covalent bonds are coupled to generate a new class of bio-polyimines (Bio-Si-PABZs), to endow them with high performance and excellent reprocessing capability and acid-degradability. By tailoring the molar content of diamines, this Bio-Si-PABZs displayed both a markedly high glass transition temperature (162 °C) and a high char yield at 800 °C in an oxygen atmosphere (73.1%). These Bio-Si-PABZs with their favorable properties outperformed various previously reported polyimines and competed effectively with commercial fossil-based polycarbonate. Moreover, the scratch (≈10 µ m) on the surface of samples can be self-healing within only 2 min, and an effective “ Bird Nest ”-to-“ Torch ” recycling can also be achieved through free amines solution. Most importantly, a bio-based siloxane adhesive derived from the intermediate Bio-Si-PABZ-1 by acidic degradation demonstrated broad and robust adhesion in various substrates, with values reaching up to ≈3.5 MPa. For the first time, this study lays the scientific groundwork for designing robust and recyclable polyimine thermosets with Si─O and imidazole units, as well as converting plastic wastes into thermal-reversibility and renewable adhesives.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymer Chemistry
·
2024
·
IF 4.1
Ningning Zhang,Xianjie Pan,Aoqian Xi,Wenpei Chen,Ting Huang,Yanning Zeng
The increase in nondegradable polymer waste and the depletion of nonrenewable fossil resources result in environmental concerns and unsustainable industrial development. It is significant to fabricate polymer thermosets with degradable, self-healable, weldable and recyclable performances from biomass. Herein, for the first time, natural peach gum (PG) as an attractive feedstock was employed to prepare degraded and recycled polyimine (PI) networks, due to the hydrolysable and renewable nature of PG. Firstly a peach gum polysaccharide with pendent –CHO groups (PGP-CHO) was synthesized through a graft reaction between 4-formylbenzoic acid and PGP; then it was cured with chitosan (CS) via a moderate and catalyst-free Schiff base reaction resulting in fully biobased PI networks (PGCS). The resultant PGCS-100 networks display good mechanical properties (tensile strength of ∼56.5 MPa and Young's modulus of ∼439 MPa) and high thermal stability (initial decomposition temperature around 227.1 °C). Meanwhile, the PGCS-100 network containing the most dynamic imine bonds exhibits superior self-healing, welding, shape memory and reprocessing performances. Moreover, PGCS-100 can be degraded completely under acidic conditions, allowing sustainable recycling. Furthermore, PGCS-100 can be applied in recycled adhesion, exhibiting excellent adhesion strength (10.5 MPa). Briefly, a new strategy to develop green environmentally friendly PI networks with high performance from biomass is provided, contributing to the reduction of polymer waste and sustainable industrial development.
研究领域:
材料科学
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生物化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Lan Cui,Mingrui Pan,Yu Zhou,Haiyan Xu,Liping Ning,Shanshan Jia,Xiaohui Wang,Zhiping Su
Environmental pollution caused by nondegradable fossil-based plastics is one of the biggest global concerns. Bamboo, which is a renewable and biodegradable biomass resource, is a promising material for developing green plastic substitutes. However, the processing (e.g., thermal processing) of bamboo into plastic substitutes remains a considerable challenge because bamboo is a stable multicomponent structure crosslinked via strong hydrogen bond (H-bond) and covalent-bond interactions, which results in its non-thermoplastic characteristic. Herein, bamboo powders (BPs) were integrated into polyimine (PI) covalent adaptable networks (CANs) using a simple heat-pressing approach, which helped us successfully fabricate a thermally processable composite film (BP/PI). The heat-driven dynamic network exchange characteristic of PI also provides BP/PI with excellent reshaping, rehealing, and remolding capabilities. The multiple H-bond interactions between BPs and PI provide BP/PI with excellent tensile strength (45.2 MPa) and flexural strength (121.9 MPa). BP/PI also exhibits remarkable water and organic solvent resistance, chemical degradability, closed-loop recyclability, and biodegradability. This attractive BP/PI material represents a high-performance and ecofriendly plastic substitute.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2025
·
IF 8.9
Hongliang Ding,Jue Wang,Chuanshen Wang,Lini Wu,Wei Zhang,Lu Liu,Yun Lei,Na Sun,Keqing Zhou,Bin Yu
With the increasing awareness of environmental protection and the concept of sustainable development, covalent adaptable networks are receiving growing attention due to their intelligent functionalities and sustainability. However, they still face challenges, including how to balance comprehensive performance, dynamic features and high flammability. Herein, lignin-derived vanillin was used as a precursor to synthesize the bio-based polyimine (TMP-IPDA-Si) with excellent comprehensive performance and certain fire safety properties. The molecular dynamics simulations showed that the introduction of hydrazide structures and the formed acylhydrazone bonds enhanced the intermolecular hydrogen bonding interactions between the polymer networks, resulting in polyimine materials with outstanding mechanical properties (tensile strength of 85.7 MPa) and high T g (201.4 °C). The TMP-IPDA-Si exhibited excellent solvent resistance, retaining over 90 % of its mechanical properties after 72 h in aqueous solutions. It also showed outstanding thermal stability and high char yield (over 46 %), surpassing many previously reported polyimine. In MCC tests, the TMP-IPDA-Si displayed low THR (8.5 kJ g −1 ) and PHRR (170.5 W g −1 ) value. This study lays the scientific groundwork for designing bio-based polyimines with superior mechanical properties and high T g , offering potential for broader applications in fire-safe and sustainable materials.
研究领域:
材料科学
·
可持续发展
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2025
·
IF 4.7
Si Zhang,Chuanbo An,Xue Jiang,Xu Li,Zifan Wang,Nuoyi Wu,Xiaoxue Wang,Yun Chen
The resulting composites exhibit remarkable self-healing properties and enhanced recyclability by incorporating dynamic, reversible polyimine bonds into the epoxy matrix. Subsequently, glass fibers (GF) were modified using 3-aminopropyltrimethoxysilane (APTMS) to improve interfacial adhesion with the epoxy/polyimine matrix. Scanning electron microscopy (SEM) analysis revealed that the modified GFs significantly contribute to mechanical reinforcement through crack bridging, stress transfer, and energy dissipation. Experimental results showed that the addition of APTMS-modified glass fibers (AGF) improved the tensile strength and modulus of the AGF/EP/PI composites. When the content of AGF is 10%, the tensile strength and modulus of the composite reach 63.3 and 301 MPa, respectively, an increase of 27% and 25% compared to the EP/PI matrix. The introduction of AGF also significantly enhances the impact resistance, with the impact strength of the composite containing 5% AGF increased by 43% compared to the matrix. In terms of cycling performance, the EP/PI matrix material demonstrates excellent recyclability. After multiple cycling tests, the overall performance of the AGF/EP/PI composite remains high. It results in excellent cycling performance, providing new design ideas for the development of high-performance, recyclable pressure shell composites.
研究领域:
材料科学
·
复合材料工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2020
·
IF 0
Jinye Zhang,Zepeng Lei,Shichang Luo,Yinghua Jin,Li Qiu,Wei Zhang
A novel conductive composite consisting of polyimine vitrimer matrix and multiwalled carbon nanotube (MWCNT) filler that allows bending, stretching, rehealing, and closed-loop recycling was developed. Such composites can be easily prepared by simply heating a mixed solution of the polyimine precursors and less than 10 wt % of MWCNTs. The resulting composites combine both advantages of the polyimine vitrimer (i.e., dynamic covalent bond exchange) and carbon nanotubes (i.e., electron conducting), and the as-fabricated thin films exhibit malleability, rehealability, recyclability and good electron conductivity. Impressively, the electrical conductivity of the composite could remain almost the same after bending, reshaping, rehealing, and reuse, thus making it an excellent candidate for flexible electronics. Moreover, such composites can also be fully recycled at the end of their service life, which would greatly reduce the electronic waste, manufacturing cost, and environmental impact.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
Maoping Lyu,Yingchun Liu,Xiangyu Yang,Dunsheng Liang,Yuanyuan Wang,Xiaofan Liang,Yijie Hu,Liyan Liang,Chaoqun Zhang
The development of bio-based thermosets with favorable mechanical properties , high glass transition temperature ( T g ), and recyclability for thermal management applications remains a huge challenge. In this study, a trifunctional aldehydes monomer was prepared from vanillin followed by curing with two kinds of diamine for novel polyimine networks. The results showed that the polyimine networks cured with 4,4′-diaminodiphenyl methane demonstrated the liquid crystalline polyimine thermosets with a high T g of 193 °C, a high tensile strength up to 84 MPa, and excellent thermal stability (the values of degradation temperature for 5 wt% weight loss, T d5 = 373 °C), while the polyimine networks cured with 4,4′-methylenebis(cyclohexylamine) demonstrated amorphous polyimine thermosets with inferior mechanical and thermos-physical performances, due to the crosslinked liquid crystal structure, the rigid benzene ring and the π-π stacking effect of the former. Furthermore, the polyimine nanocomposites were constructed by incorporating graphene nanoplatelets (GnPs) into these bio-based thermosets. With only 8 wt% GnPs, the nanocomposites showed a remarkable thermal conductivity of 1.8 W m −1 K −1 . Interestingly, both the polyimine networks and their composites demonstrated complete recyclability in mild acid conditions owing to the existence of dynamical Schiff-base structures. The bio-based polyimines and nanocomposites reported here offer various advantages, including high mechanical properties and T g , excellent thermal stability, remarkable thermal conductivity, and recyclability, which provides a new direction for the development of high-performance base composite networks.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）