POLYMER
·
2026
·
IF 5.1
Yongliang Ding,Lieshun Cai,Siyu Liu,Jindong Li,Qihao Huang,Yu Fang,Qingmin Yang,Xi Li,Zhongkai Wang,Xiankun Wu
The design of sustainable polymers that combine high strength, ductility, and compatibility with existing bioplastics remains a critical challenge. Here we report a castor-oil-derived sulfur-containing copolyamide (PAS-X) synthesized via thiol-ene click reaction followed by melt polycondensation, providing a scalable route for high-performance bio-based materials. The incorporation of flexible thioether linkages and strongly hydrogen-bonding amide motifs enables precise control over chain mobility, crystallinity, and mechanical response. The optimized copolymer, PAS-50, exhibits a tensile strength of ≈39.8 ± 2.4 MPa and a work-to-fracture of ≈120.7 ± 8.0 MJ m −3 . When blended with polylactic acid (PLA) at low loadings (≤5 wt%), PAS-50 forms robust hydrogen-bond-mediated interfaces that induce a brittle-to-ductile transition, increasing fracture toughness from 9.2 MJ m −3 to 60.7 MJ m −3 without sacrificing yield stress. This work establishes a chemically simple and industrially viable approach to transform renewable plant-oil derivatives into multifunctional polyamides, offering a general framework for hydrogen-bond-assisted design of strong and tough bio-based polymers.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Xinmei Yan,Junjie He,Ying Yang,Hao Jiang,Haipeng Zou,Zichen Zhang,Guanghao Chen,Yan Jiang,Hongwen Zhang
Oily wastewater poses significant threats to environmental ecosystems and human health, and the inherent complexity of oil–water mixtures underscores the urgent need for advanced, intelligent separation materials. In this study, we report the development of a pH-responsive sponge with reversible wettability switching, designed for efficient and adaptive oil–water separation. Acrylic acid-terminated polydimethylsiloxane (PDMS-AA) was synthesized via sodium ethoxide-initiated ring-opening polymerization of octamethylcyclotetrasiloxane (D 4 ), followed by end-capping with acrylic acid. Subsequently, a bifunctional copolymer (PDMS-AA-UA) was prepared through free-radical copolymerization of PDMS-AA and 10-undecenoic acid (UA), which was then grafted onto hydrophilic SiO 2 nanoparticles to form a micro-/nano-structured composite coating. The resulting sponge exhibits reversible, pH-driven wettability transitions. Under acidic (pH 1) and neutral (pH 7) conditions, the surface displays superhydrophobicity with a water contact angle (WCA) of approximately 160°, enabling selective oil absorption. Upon exposure to alkaline conditions (pH 14), deprotonation of carboxyl groups renders the surface hydrophilic, facilitating rapid release of absorbed oil and demonstrating controllable desorption behavior. This switchable wettability enables on-demand separation of various oil–water mixtures.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
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IF 4.6
Zhichao Zhang,Xiaoqi Wang,Li Wang,Renan Wu,Yan Jin,Ziyuan Duan
The characteristic ‘mutton flavor’ primarily emanated from subcutaneous adipose tissue and was associated with the levels of three branched-chain fatty acids (BCFAs). This study focused on assessing the quantitative distribution of BCFAs in four sheep breeds from northern China and initially explored the influence of genetic and feeding factors through systematic GC-MS analyses and multidimensional statistics. A total of 164 samples were procured from four breeds of Chinese indigenous sheep, including small-tailed Han sheep (SHS, n = 30; rams 12, ewes 18), Altay sheep (AS, n = 30; rams 15, ewes 15), Short-tailed Steppe sheep (STSS, n = 44; rams 14, ewes 30), and HulunBuir sheep (HBS, n = 60; rams 30, ewes 30), all 8 months old. The results indicated that SHS exhibited the highest levels of BCFAs, followed by AS. No significant difference between STSS and HBS, both with notably lower levels of mutton flavor-related BCFAs. Additionally, rams generally harbored higher levels of BCFAs in comparison to ewes. Collectively, this study provides valuable insights for improving the mutton flavor.
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JOURNAL OF CHROMATOGRAPHY A
·
2021
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IF 4.759
Chao Fan,Bei Liu,Hui Li,Kaijun Quan,Jia Chen,Hongdeng Qiu
In this work, three new mixed-mode stationary phases were prepared, based on different ratio of N-vinyl pyrrolidone (NVP) copolymerized together with undecylenic acid (UA) on silica microspheres surface without silanization, which named Sil@NVPUA series. The combination of NVP and UA rendered the Sil@NVPUA suitable for reversed-phase liquid chromatography (RPLC) and hydrophilic interaction liquid chromatography (HILIC), and shown excellent methyl, planar, isomers and ion selectivity. Five types of model analytes including eight polycyclic aromatic hydrocarbons, six alkylbenzenes, eight nucleosides and nucleobases, seven ginsenosides and five oxazolidinones can be well separated on this stationary phase. The preparation method of NVP and UA modified silica-based stationary phase is simple, and it also provides a new idea for the design of synthetic polymers to develop mixed-mode chromatography.
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高影响因子
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
·
2021
·Vol. 100
·期 8
·1747-1754
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IF 2.007
Jing Li,Yanjun Jiao,Qin Luo,Weixin Hu,Shenwen Fang,Chunling Tang,Qiang Liu
During the exploitation of shale gas, there are many oil-based drill cuttings (OBDC) produced, which are hazardous waste. In this paper, the characteristics of OBDC were analyzed and 25 hydrophobic deep eutectic solvents (DESs) were prepared as extractants for treating OBDC. The results showed that the DES formed by lauric acid and thymol had the highest extraction efficiency. The significant parameters of the extraction process were studied by using total petroleum hydrocarbon (TPH) as an index and the rational extraction conditions were recommended as follows: 0.8:1 mole ratio of lauric acid to thymol, 10:1 mass ratio of DES to OBDC, and 1 h extraction time at 60°C. The TPH of OBDC can be decreased from 14.75 to 0.87 wt.% at this recommended condition. The high extraction efficiency was also confirmed by energy dispersive spectrum results of treated OBDC. In addition, the lauric acid/thymol DES can be recycled and the TPH was still smaller than 1% after three cycles. This research suggests that hydrophobic DES extraction is an effective technology for TPH removal from OBDC.
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International Journal of Polymer Science
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2020
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IF 1.646
Chenjie Jiao,Rong Zhong,Yanfang Zhou,Hongfei Zhang
A UV-cured composite containing a rare earth complex was prepared for this study. First, the photoluminescent terbium complex was synthesized with a long-chain unsaturated fatty acid (10-Undecenoic acid) by a solution precipitation method, resulting in the 10-UA-Tb(III) complex. Its structure was proven by FTIR, elemental analysis, XRD, and TGA. The results indicated that the organic acid ligand successfully coordinated with the Tb3+ ion and that the complex had a chelate bidentate structure. The emission spectrum of the 10-UA-Tb(III) complex indicated that the complex can emit a bright green light with the unique luminescence of the Tb3+ ion. Furthermore, the luminescence properties of complexes with different ratios of Tb3+ and ligand were studied, and the ratio of Tb3+ and the ligand had an obvious impact on the luminescence intensity of the 10-UA-Tb(III) complex. Subsequently, the prepared rare earth complex was doped into a UV-cured coating in different proportions to obtain a UV-cured composite. The morphology of the rare earth UV-cured composite was observed by SEM. The images showed that the rare earth complex was dispersed uniformly in the polymer matrix. Moreover, the composites could emit fluorescence. Additionally, it has good thermal stability and compatibility with the resin. Therefore, these composites should have potential applications in UV curable materials, such as luminescence coatings.
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SURFACE & COATINGS TECHNOLOGY
·
2023
·
IF 5.4
Meng Zhu,Yucheng Liu,Ahmad Rahimpour,Yong Liu,Mohtada Sadrzadeh
pH-responsive materials with switchable wettability provide a novel strategy for oil-water separation applications. The thiol-ene click chemistry method was used to fabricate pH-responsive stainless-steel meshes (SSM) by grafting long-chain alkanes with carboxyl ( COOH) and methyl ( CH 3 ) groups onto the SSM surface. The pH-responsive SSM showed excellent separation efficiency (>97 %) in both superhydrophobic and superhydrophilic states, which was unaffected by the presence of NaCl in the mixed solution. The pH-responsive SSM demonstrated a fast response within 3 s and a wide pH range after pre-wetting in an alkaline solution (pH spike) due to the presence of long carbon chains containing COOH and CH 3 groups. Moreover, the mesh underwent antifouling, ultraviolet light (UV) resistance, and mechanical resistance tests, showing excellent durability and stability. The water contact angle (WCA) remained higher than 130° after 24 h of UV exposure and six rounds of wear experiments. Furthermore, the oil-water separation efficiency remained above 98.4 % after 20 cycles. The in-depth investigations conducted in this study will provide valuable insights into developing pH-responsive membranes to meet diverse demands, such as water rejection or oil rejection under complex conditions.
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ANALYTICA CHIMICA ACTA
·
2023
·
IF 6.2
Xiao-Dong Cheng,Zheng Zhang,Yun-Ping Li
Green chromatography techniques using low-toxic mobile phase are getting increasingly attention in recent years. The core is developing stationary phases that possess adequate retention and separation under the mobile phase of high content water. Using thiol-ene click chemistry, an undecylenic acid-bonded silica stationary phase (UAS) was prepared in a facile manner. Elemental analysis (EA), solid-state 13 C NMR spectroscopy and Fourier transform infrared spectrometry (FT-IR) confirmed the successful preparation of UAS . The synthesized UAS was employed for per aqueous liquid chromatography (PALC), which uses little organic solvent during separation. Due to the hydrophilic carboxy, thioether group and hydrophobic alkyl chains of the UAS, various categories of compounds (including nucleobases , nucleosides , organic acids and basic compounds) with different properties can achieve enhanced separation under the mobile phase of high content water compared with commercial C18 and silica stationary phases. Overall, our present UAS stationary phase shows excellent separation ability toward highly polar compounds and meets the requirements of green chromatography.
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GIANT
·
2023
·
IF 7
Yangyang Zhang,Xiao Gong
The oily wastewater has posed a great threat to the environment and human health, and the oil-water mixture is complex and diverse. Therefore, it is crucial to develop a smart and efficient oil/water separation material. In this paper, random polymers containing carboxyl groups were synthesized for surface-modifying hydrophilic SiO 2 nanoparticles. Polydimethylsiloxane (PDMS) was then used as the adhesive to fix the modified SiO 2 nanoparticles firmly on the fabric surface endowing the fabric with a robust hydrophobic effect. The modified SiO 2 nanoparticles not only made the fabric obtain a rough structure but also caused the fabric to have the effect of switchable wettability under the stimulation of pH. In addition, the prepared fabric maintained good mechanical durability and chemical stability after the mechanical abrasion, ultraviolet irradiation, and organic solvent treatment. Interestingly, under the stimulation of pH, the smart fabric could controllably separate different oil/water mixtures (including heavy oil/water and light oil/water) with excellent separation efficiency and high flux even after 20 cycles of separation process. Meanwhile, the pH-responsive fabric material successfully separated light oil/water/heavy oil three-phase oil/water mixture and different kinds of emulsions. Therefore, the prepared pH-responsive superwetting fabric has a broad application prospect in the field of dealing with complex oil/water mixing systems.
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ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Lei Tang,Zhixiang Zeng,Gang Wang,Luli Shen,Lijing Zhu,Yingxin Zhang,Qunji Xue
The superhydrophilic self-cleaning surface can perfectly deal with oil pollution, which cannot be realized by the superhydrophobic surface. This research is designed to study the mechanism of wetting behavior of superhydrophilic coating with different function groups and guide to design a stable self-cleaning surface. We prepare several hydrophilic coatings including nonionic, ionic, and zwitterionic coatings to investigate their self-cleaning performance underwater when they have been polluted by oil in the dry state. The chemical composition, surface roughness, static and dynamic wettability, underwater oil adhesive force, and swelling degree of the coatings are studied to explore their oil dewetting mechanism. The results indicate that the wettability of the coating to water and oil is the key factor to determine the self-cleaning performance. The smooth 3-sulfopropyl methacrylate potassium salt (SA) anionic coating shows the best self-cleaning performance even when polluted by heavy crude oil in the dry state in air. It is also found that in the dry state, the rough hydrophilic anionic surface will lock up the oil in the structures and then lose its self-cleaning ability underwater, whereas the oil droplet can detach from the smooth coating surface quickly. Meanwhile, the superhydrophilic and underwater superoleophobic SA anionic surfaces also exhibit excellent anti-fogging and oil–water separation performance.
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CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Huilong Guo,Wanting Dai,Ying Miao,Yongzhou Wang,Dong Ma,Wei Xue
In this work, liquid crystalline (LC) monomer with two n-decenoyl terminated groups was synthesized and applied into shape memory hydrogels containing main-chain LC unit by Michael addition polymerization. The liquid crystalline textures of LC monomer and hydrogels were determined by polarized optical microscopy. Thermal and water activated shape memory properties were investigated. And the shape memory properties were improved by incorporating main chain LC unit into hydrogels. The biocompatibility was evaluated by the cytotoxicity test and all these hydrogels illustrated no cytotoxicity. The good biocompatibility and reinforced shape memory properties with shape fixity ratio higher than 96% and shape recovery ratio higher than 93%, indicating a new idea to prepare shape memory hydrogels by introducing main-chain mesogenic units into hydrogels in the safe application of smart biomedical areas. Finally, water-activated actuators were prepared and could change themselves into “C” or “S” shape in water at 25 °C with about 20 min. And through in vitro heparin release of hydrogel and actuator investigation, more sustained heparin release performance of actuator was observed in our study. This indicated that the heparin loaded actuator would have potential application in anticoagulant scaffold by combining the sustained heparin delivery character and the shape self-changing character of water-activated actuators.
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ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Bin Shang,Min Chen,Limin Wu
The biomimetic fabrication of Nepenthes as a new class of liquid-repellent surface materials has attracted much attention recently, but there still remains big challenges, for example, short-serving life, instability, and so forth. Herein, we develop a novel strategy to fabricate robust slippery liquid-repellent coating by the synthesis and use of silicon oil-contained ultraviolet-responsive microcapsules. Owing to the physical and chemical inertness of silicon oil and the substantial randomly dispersed microcapsules in the coating, this nepenthes-like liquid-repellent coating can not only endure different harsh environments but also have excellent long-term self-healing functions.
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高影响因子
危险品化学品经营许可证（带存储）