ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Xuebin Lian,Yuanjian Li,Penghui Li,Yilin Jin,Xinyu Zhao,Jiangwen Li,Dehuan Kong,Shujun Zhao,Shuangfei Xiang,Feiya Fu,Xiangdong Liu
The problems of strength–toughness trade-off and stability–switchability conflict make it a huge challenge to integrate exceptional adhesion and desired recycling performances into a single system. Inspired by wood cellulose molecular chain structure, a parallel-ordered dynamic boronic esters cross-linking network is presented by using 4-dimethylaminopyridine as a countercation stabilizing the boron center to induce boric acid to form ionic spiroborate linkage with linear hydroxyl-decorated epoxy polymer. The ionic spiroborate polymer network has a high cross-linking degree to contribute to structural stability and adhesion strength. Moreover, the unique ionic spiroborate bond cooperates with the parallel-ordered structure, providing a highly effective path and a rapid exchange rate and thus affording excellent closed-loop recycling properties. Given the effects, a superior adhesion strength of 30.86 ± 0.74 MPa is found along with an excellent debonding work of 64929 N m–1. Also, adhesives show excellent environmental reliability. In addition, the prepared adhesives exhibit good chemical/physical recyclability and display 106.8% conservation of adhesion strength after 3 bonding and debonding tests. This work provides a strategy to construct high-performance adhesives that combine robust adhesion and recyclable properties.
研究领域:
材料科学
·
高分子化学
·
胶粘剂技术
·
可持续化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2022
·Vol. 41
·期 4
·476-482
·
IF 3.815
Zhang Jian,Zhu Jie,Hua Zan,Liu Guang-Ming
Soil environment on earth contains a variety of ions, which are expected to play a vital role in the biodegradation of plastics discarded in the environment. In this work, poly(butyleneadipate- co -terephthalate) (PBAT) is employed as a model biodegradable plastic to study the specific ion effects on the enzymatic degradation of polyester plastics. The results show that the specific ion effects on the enzymatic degradation rate of the PBAT films and on the catalytic rate constant for the enzymatic hydrolysis of the ester bonds are strongly dependent on temperature and ionic strength. Both the enzymatic degradation rate and catalytic rate constant decrease following the trends Na + > K + > Ca 2+ and Cl − > SO 4
2− > NO 3
− for cations and anions, respectively, indicating that the ion-specific enzymatic degradation of the PBAT films is closely correlated with the specific ion effects on enzymatic hydrolysis of the ester bonds. Our study shows that the specific ion effects on the enzyme activity can be understood by taking into account the ion-specific cation-anion interaction, ionic dispersion force, salting-out effect and salting-in effect. This study of specific ion effects on the enzymatic hydrolysis of the ester bonds and the resultant enzymatic degradation of the PBAT films would offer us a new clue to develop new biodegradable, environmentally friendly synthetic plastics.
研究领域:
环境科学
·
生物化学
✓ 已验证
DOI
高影响因子
Chemical Science
·
2025
·
IF 7.4
Yue-Wen Zhou,Ming-Yang Jia,Jun-Lei Yang,Qinlei Liu,Zhenfeng Cai
The influence of electric fields (EFs) on chemical reactions has attracted significant interest due to their ability to modulate reaction rates, pathways, and selectivity. Although EFs have been experimentally demonstrated to facilitate various reactions, clearer evidence for their role in covalent condensation has remained limited. Herein, we provide experimental evidence of electric-field-induced covalent condensation of boronic acids, utilizing the strong EFs at the air-liquid interface of microdroplets to induce the reaction. Microdroplet-based chemistry provides interfacial electric field intensities as high as ca. 109 V/m, offering a robust platform for the systematic investigation of boronate linkage formation and subsequent condensation of boronic acids. Our results confirm the role of EFs in facilitating room-temperature condensation of boronic acids, providing direct insights into the electric-field-induced polymerization process and presenting an experimental approach for investigating these processes in solution.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2024
·
IF 5.8
Sikun Fang,Wanting Zeng,Long Liu,Yuan Lyu,Fuwei Dong,Lin Wan,Yingjun Liu,Aihua Du
It is challenging to design and synthesize elastomers with both good mechanical performance and high healing efficiency because their mechanisms are mutually exclusive. This work aims to shift the trade-off between them by incorporating dynamic non-covalent bonds via 2-ureido-4[1H]-pyrimidione (UP y ) and dynamic covalent bonds via boronic ester bonds into polyurethane. The quadruple hydrogen bonds between UP y dimers serve as physical crosslinks, improving the overall mechanical properties of the polyurethane, while the boronic esters facilitate its healing. The resulting polyurethane can achieve an ultimate stress of 27.4 MPa and a healing efficiency of 90 %. The effect of healing time on the healing efficiency is modeled and discussed.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2021
·
IF 7.033
He Li,Shisheng Liang,Yucui Hou,Yupeng Wang,Shuhang Ren,Weize Wu
Direct coal liquefaction (DCL) is not only for fuel but also for chemicals, which shows high efficiencies in atom utilization and energy. The study on coal structure is important to select coal for direct liquefaction . Naomaohu coal is a kind of subbituminous coal and a typical coal for direct liquefaction . In this work, the structure of Naomaohu coal was investigated via alkali‑oxygen oxidation , ruthenium ion catalyzed oxidation and physical analyses and a representative structural model with a model size of 128,755 amu was constructed. The structural characteristics show that the ratio of single-, double-, triple-, and quadruple-aromatic rings is 149:164:102:63. The triple- and quadruple-rings aromatic structures are mainly connected by C C bonds of 2–4 carbon atoms. The single- or double-ring is connected on the triple- and quadruple-rings aromatic structures through ether or ester bonds , which can be broken easily under mild conditions. Long alkyl side chains with carbon atoms from 13 to 25 accounting for 0.91 wt%. The high H/C, high oxygen content (mainly weak bonds such as ether and ester bonds between aromatic clusters), abundant single-, double-, triple, and quadruple-aromatic rings, and alkyl bridge bonds of 2–4 carbon atoms are beneficial to the mild liquefaction of Naomaohu coal
研究领域:
化学工程
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2022
·
IF 9.463
Li Yang,Mingliang Wu,Xueli Yang,Baofeng Lin,Lihua Fu,Chuanhui Xu
This study reports healable, recyclable, and adhesive rubber composites equipped with ester linkages, Zn 2+ ionic bonds , and H-bonds based on carboxylic styrene butadiene rubber (XSBR), nano-ZnO, and diglycidyl ether of bisphenol A (DGEBA). Zn 2+ ionic cross-links are introduced into XSBR networks through the acid-base reaction between nano-ZnO and carboxyl groups of XSBR. The in-situ generated Zn 2+ is thus evenly dispersed in the rubber matrix to serve as transesterification catalyst, which promotes the healing and reprocessing of the rubber composites at a higher temperature. The healing efficiency of the rubber composites can realize 75% and further improved to 90% after introducing additional hydroxyl groups. The rubber composites can reprocess at least 5 times. Moreover, the rubber composites are easily disintegrated to recycle neat XSBR due to the dissociation of ester linkages in the alkaline solution. Interestingly, the rubber composites show a surprising reversible adhesion property under water stimulation.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2024
·
IF 8.1
Xing Xie,Dan Yang
Traditional thermally conductive polymer materials exhibit a propensity for damage when applied in dynamic environments, which leads to shortened service life and suboptimal utilization of resources. Herein, polyvinyl alcohol (PVA)-based thermally conductive composites with a self-healing capability are prepared based on dynamic borate ester bonds and hydrogen bonds. Poly(dopamine) functionalized graphene oxide (denoted as PGO) is used as a thermally conductive filler to achieve a high thermal conductivity (TC) of 0.79 W/(m·K) for the PGO/PVA composites, which is 527% of pure PVA (0.15 W/(m·K)). The improved TC of PGO/PVA composites is mainly attributed to the reduction in interface thermal resistance and the construction of heat conduction channels. Additionally, the PGO/PVA composites display a self-healing efficiency higher than 60% at room temperature without external simulation. Furthermore, the as-prepared PGO/PVA composites exhibit excellent mechanical properties, with a tensile strength of 409 kPa and an elongation at break of 479%, respectively. This work provides a promising strategy for fabricating thermally conductive polymer composites, which can be deployed as thermal interface materials for long-term applications.
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
·
2021
·
IF 4.43
Yongjie Dong,Siqi Chen,Piao Ning,Ka Lu,Song Ma,Yingjie Wang,Shaoyu Lü
Self-healing hydrogels based on phenylboronate ester bonds are of huge interest in polymer science. However, most of these hydrogels only heal themselves at pH above their pKa (mostly > 8.0), which reduces their potential application in physiologic environments. Here, we showed that a small amount of phosphate produced stable hydrogels, able to support their self-healing at neutral pH. The hydrogel was formed by poly (3-acryloxymethylphenylboronic acid- co -N, N-dimethyl acrylamide) and poly (D-gluconamidoethyl methacrylate- co -N, N-dimethyl acrylamide) in phosphate buffer. Self-healing was observed at pH = 7.0. Intermolecular interactions between phenylboronic acid and phosphate were suggested by rheology, DSC determination and QTAIM calculations. The study represents a new mechanism to promote phenylboronate-based hydrogel formation and self-healing at neutral environment and, more importantly, provides considerable insight into their application in physiologic conditions including sensors and tissue engineering.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaoqi Xie,Shouhai Li,Mei Li,Haiyang Ding,Mingtao Lin,Lina Xu,Na Yao,Qingyuan Feng,Xiaohua Yang,Xiao Feng,Yan Zhang,Yi Xing
The utilization of natural and renewable vegetable oil resources for development of multi-functional polymer materials aligns with the expanding practical application requirements and adheres to sustainable development strategies. Here, 3 different novel vegetable oil-based active prepolymers containing carboxyl groups, quinone oxime, isocyanate (NCO), and oxime-carbamate structures were synthesized using oleic acid as the raw material. Then a series of vegetable oil-based epoxy vitrimers were constructed via crosslinking polymerization with epoxy resin. The molecular structure, mechanical properties, and thermal characteristics of the fabricated vitrimers were systematically investigated, and their reprocessability and photothermal dual responsive shape memory behavior were also analyzed in detail. The resulting polymers exhibit superior controllable mechanical properties, and display outstanding reprocessability without the addition of a catalyst. The dynamic three-dimensional cross-linking networks formed by dynamic oxime-carbamate, dynamic ester bonds and hydrogen bonds endow the polymerization systems with exceptional reprocessability. The incorporation of quinone oxime groups within the polymerization systems endows the polymers with excellent photothermal dual-response shape memory performance. The superior adhesion and repair capabilities make the polymers suitable for use as reusable adhesives. The polymers developed here hold significant potential for applications in medical, electronic, and other fields.
研究领域:
高分子科学
·
材料工程
·
可持续化学
·
智能材料
·
生物基聚合物
·
响应性聚合物
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 2
·1-9
·
IF 2.8
Zhao Yanna,Wang Yuqi,Zhang Ting,Bai Xiaowei,Zhang Yingying
This paper presents the development of recyclable and repairable dynamic ester cross-linked network bio-based Vitrimer (IMT-PER-COO). Pentaerythritol (PER) is used as the crosslinking agent in IMT-PER-COO to form a topological network through hydroxyl groups in PER and isocyanate groups in 1,6-hexamethylene diisocyanate (HDI). At 150 ℃, the carbamate bond is simultaneously broken and associated, and the topological network is remapped to achieve the goal of material self-repair. The results showed that the successful synthesis of IMT-PER-COO was confirmed by FTIR, XRD and XPS. The DMA test confirmed the movement of the polymer chain segment at high temperature. In addition, with the increase of PER content, the glass transition temperature (Tg) of the material increased, and the thermal stability and mechanical properties were improved. The repairability of the IMT-PER-COO material has also been confirmed. This technology introduces bio-based IMT into the covalent adaptive network, which has great potential for the further development of environmentally friendly materials.
研究领域:
材料科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2024
·
IF 5.8
Chunjiao Liu,Haoran Wu,Ruixue Wang,Yajuan Li,Xudong Yu
Conductive polymer hydrogels have attracted great attention due to their application prospects in the fields of health care monitoring, wearable electronics and soft robots. Developing hydrogel sensors with robust mechanical characteristics, outstanding sensing abilities, the ability to self-heal and adhere effectively is critical, yet it remains a major challenge. Here, we present a simple one-pot method to prepare a dual-network flexible hydrogel based on polyvinyl alcohol (PVA), acrylamide (AM), pyridine-4-boronic acid derivatives (PBAD), and lithium chloride (LiCl). The cross-linked network is established through reversible and dynamic borate ester bonds, hydrogen bonds, electrostatic interactions and coordination bonds, imparting outstanding mechanical and self-healing characteristics to the material. The incorporation of PBAD not only imparts high conductivity (9.84 mS·cm −1 ) and sensitive sensing performance (GF = 13.89) to the hydrogel, but also synergistically improves its elongation (1689 %), tensile strength (0.6 MPa), and toughness (5.74 MJ/m 3 ). In addition, based on the participation of LiCl, the hydrogel shows outstanding anti-freezing properties. This work is expected to provide new ideas for the assembly of high performance flexible sensor and to expand their application in electronic skin, wearable devices, and soft actuators.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER SCIENCE
·
2025
·
IF 3.6
Sunqi Yu,Siyuan Chen,Tianrui Tong,Yunfeng Yan,Qi Shuai
Micelle-based drug delivery systems (DDS) have emerged as a promising solution to address challenges associated with the in vivo delivery of hydrophobic anticancer chemotherapeutics. However, micelles still encounter issues such as drug pre-leakage and poor stability in physiological conditions. To overcome these limitations, we developed a core-cross-linking strategy utilizing amphiphilic copolymers, mPEG- b- P(AVL- co -LA) (mPPAL), functionalized with phenylboronic acid (PBA), and catechol by CuAAc “click” chemistry, respectively. These copolymers self-assembled into core-cross-linked micelles (CLMs), featuring boronic ester bonds, which were characterized through a series of evaluations. The CLMs exhibited a rational particle size, uniform morphology, low critical micelle concentration (CMC), high PTX loading capacity, and excellent stability. Two promising micelles, CLM1 and CLM3, were identified, and their responsiveness to acidic pH and elevated levels of ROS was confirmed to enable controlled PTX release. The results of MTT assay and hemolytic analysis demonstrated high biocompatibility and potential in vivo application of these selected CLMs. The anticancer efficacy of the selected PTX-CLMs was further validated through MTT assay and 3D tumor spheroid studies. Fluorescence microscopy and flow cytometry demonstrated rapid intracellular uptake of the CLMs. In vivo biodistribution studies demonstrated successful accumulation in the targeted tumor tissue. These findings suggest that the boronic ester-based CLMs developed in this study are a promising nanocarrier for effective PTX delivery. Graphical Phenylboronic acid (PBA) and catechol-modified amphiphilic copolymers (mPPAL@R) were synthesized via ring-opening polymerization followed by CuAAc click chemistry. These copolymers were employed to construct pH- and ROS-dual-responsive micelles with boronic ester core-crosslinking. A series of in vitro and in vivo experiments were conducted to evaluate PTX-loaded micelles, demonstrating their significant potential for effective PTX delivery.
研究领域:
药剂学
·
肿瘤学
·
材料科学
✓ 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）