POLYMER TESTING
·
2017
·
IF 2.464
Xinyu Hu,Yongmei Wang,Liangliang Zhang,Man Xu
A series of hydrogels were fabricated from tannic acid (TA), a typical plant polyphenol widely present in wood, and polyacrylamide (PAAm) by semi-IPN and cryogelation techniques. The introduction of TA into the PAAm network endows the system with enhanced cell adhesion properties. The cryogels with open interconnected macropores had a superfast swelling rate and a high swelling ratio, as well as high elasticity in response to compression. The degradation of the hydrogels can be tuned by modulating the content of cross-linker poly(ethylene glycol) diacrylate (PEGDA). Cytotoxicity results revealed that the hydrogels were non-toxic to COS-7 cells. All these results suggested that TA/PAAm semi-IPN hydrogels have great potential for applications in tissue engineering.
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高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2016
·
IF 4.179
Xiaohong Wang,Haiqian Hou,Yujun Li,Yingying Wang,Chen Hao,Cunwang Ge
A range of super-absorbent semi-IPN hydrogels—polyvinyl alcohol/poly (acrylic acid-co-acrylic amide) (PVA-P(AA-co-AM)) were synthesized via free radical polymerization method under ultrasound-assisted condition. L 16 (4 5 ) orthogonal experiments were designed to optimize the synthesis conditions and the success was characterized by FTIR, SEM and TGA. Swelling capacities were studied in various pH solution and saline solution whose results indicated that pH in solution shows an obvious influence on it and the salt resistance is greater in salt solution of low valence relative to that of high valence. Meanwhile, its swelling behavior was evaluated in water solution, which revealed that the swelling process conformed to the Schott model and the diffusion type was non-Fickian diffusion. Moreover, the adsorption on cobalt (II) from aqueous solutions was also investigated in the paper. The optimum pH value was found close to 4 for the cobalt (II) adsorption and it was discovered that adsorption kinetics and adsorption isotherms for cobalt (II) were in accordance with the pseudo-second-order model and the Freundlich model respectively. Besides, thermodynamic parameters were calculated for the cobalt (II) adsorption and the findings revealed that the adsorption behavior is spontaneous and endothermic.
研究领域:
材料科学
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环境科学
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高影响因子
Fuel Cells
·
2026
·Vol. 26
·期 3
·e70115
·
IF 3.1
Chuyu Zhou,Didi Chu,Wenxing Zeng,Jingze Cheng,Zhengdong Fei
Balancing high proton conductivity with dimensional stability remains a persistent “trade-off” for sulfonated poly(ether ether ketone) (SPEEK) electrolytes. Herein, an amine-triggered self-catalyzed strategy is reported to construct a quaternary ammonium-functionalized siloxane semi-interpenetrating polymer network (semi-IPN) within SPEEK matrix. The in-situ formed rigid Si─O─Si scaffold effectively confines membrane swelling, while the tethered quaternary ammonium sites synergistically facilitate efficient proton hopping through acid–base interactions with sulfonic acid groups. The optimized membrane (GTM-2) yields a peak conductivity of 277.8 mS cm −1 at 80°C, achieves a power density of 746.26 mW·cm −2 in a single fuel cell. Moreover, the semi-IPN membranes maintain favorable mechanical strength (up to 23.3 MPa). This architectural design provides a robust pathway for developing high-performance, non-fluorinated proton exchange membranes.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2019
·Vol. 43
·期 42
·16647-16655
·
IF 3.069
Qiuli Cheng,Xiaowei Guo,Jiawei Zou,Xiaoyu Shi,Shuxiang Ding,Zuosen Shi,Song Zhu,Zhanchen Cui
An interpenetrating polymer network (IPN) structured antibacterial layer was prepared on dental base materials containing quaternary ammonium salt monomers (HMDQAs), polyurethane dimethacrylate oligomers (BIHs) and functionalized SiO2 nanoparticles using a one-step photo-crosslinking method. Scanning electron microscopy (SEM), atomic force microscopy (AFM), ultraviolet near-infrared visible spectrophotometry (UV-3600) and water contact angles were used to study the surface properties of the coatings. SiO2 nanoparticles changed the hydrophilicity of the cationic antimicrobial surface and increased its contact angle. Furthermore, the IPN coatings exhibited highly effective antibacterial activity on the modified dental base material, poly(methyl methacrylate) (PMMA), against Streptococcus mutans, which was evaluated by plate colony counting, optical density (OD), SEM and a live/dead assay. The MTT assay confirmed their biocompatibility. The IPN silicon complexed coating displayed good transparency, excellent antibacterial activity, and no cytotoxicity, which indicated enormous potential for the treatment of denture bases.
研究领域:
生物医学工程
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材料科学
·
口腔医学
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2014
·Vol. 49
·期 21
·7360-7370
·
IF 2.305
Chen Yi,Xu Weijian,Zeng Guangsheng
In order to prepare a robust thermosensitive hydrogels with ultrarapid response rate, the –Si–O– network was incorporated into the first clay cross-linked poly( N -isopropylacrylamide) network by the simultaneous hydrolytic polycondensation of tetramethoxysilane (TMOS); the two-step freezing polymerization technique was used in polymerization process for guaranteeing the very fast response rate of gels. The properties of resulting hydrogels (T-NC gels) including mechanical properties, hydrophily, swelling and response behavior show an obvious dependency on the content of added TMOS. With the increase of added TMOS, the more integrated and high-density –Si–O– network was formed in gels, which makes the gels become more robust with higher strength and modulus, while the swelling ratio and response rate decreases due to the lapped effect of increased network density and hydrophobicity. Interestingly, T-NC gels show better volume stability than that of NC gels in shrinking process.
研究领域:
材料科学
·
高分子化学
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高影响因子
ACS Biomaterials Science & Engineering
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2016
·
IF 0
Wei Wei,Xiaoliang Qi,Junjian Li,Gancheng Zuo,Wei Sheng,Jianfa Zhang,Wei Dong
Poly(N,N-diethylacrylamide) is not only a thermosensitive polymer, but also a good hydrogen bond acceptor. Therefore, drugs with carboxyl groups can serve as hydrogen bond donors and form interactions with the tertiary amide groups in N,N-diethylacrylamide. Herein, we report a novel drug delivery system for anionic drugs composed of poly(N,N-diethylacrylamide) and salecan. Salecan was used to improve the hydrophilicity and accelerate the responsive rate of this system. As expected, salecan-enriched hydrogels exhibited higher swelling ratios and were more sensitive to temperature. Moreover, scanning electron microscopy images showed that the hydrogels are superporous structures, with pore-sizes that increase with salecan concentration. The swelling ratios decreased continuously with the increase of temperature in the range 25–37 °C. MTT assay for cell viability and cell adhesion studies confirm the cell compatibility of the system. Delivery tests using diclofenac sodium, an anti-inflammatory drug, indicate that the thermosensitive property of this system is favorable for anionic drug delivery. Interestingly, the release rates of diclofenac sodium from the hydrogels were temperature dependent, with higher temperatures contributing toward faster release rate.
研究领域:
材料科学
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药学
·
生物医学工程
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DOI
PubMed
Scientific Reports
·
2022
·Vol. 12
·期 1
·1-12
·
IF 4.996
Li Meiqi,Shi Tingchun,Yao Danyu,Yue Xiuyan,Wang Haoxuan,Liu Kezhou
The development of 3D printing has recently attracted significant attention on constructing complex three-dimensional physiological microenvironments. However, it is very challenging to provide a bio-ink with cell-harmless and high mold accuracy during extrusion in 3D printing. To overcome this issue, a technique improving the shear-thinning performance of semi-IPN bio-ink, which is universally applicable to all alginate/gelatin-based materials, was developed. Semi-IPN bio-ink prepared by cyclic heating–cooling treatment in this study can reduce the cell damage without sacrificing the accuracy of the scaffolds for its excellent shear-thinning performance. A more than 15% increase in post-printing Cell viability verified the feasibility of the strategy. Moreover, the bio-ink with low molecular weight and wide molecular weight distribution also promoted a uniform cell distribution and cell proliferation in clusters. Overall, this strategy revealed the effects of molecular parameters of semi-IPN bio-inks on printing performance, and the cell activity was studied and it could be widely applicable to construct the simulated extracellular matrix with various bio-inks.
研究领域:
生物医学工程
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组织工程
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材料科学
·
生物材料
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Yaqi Zhang,Hongliang Wei,Bingya Hua,Chunwang Hu,Wenjing Zhang
Chitosan based hydrogels with multiple stimulus responses have broad application prospects in many fields. Considering the advantages of semi interpenetrating network (IPN) technology and the special temperature and ion responsiveness of polymers containing zwitterionic groups, a semi-IPN hydrogel was prepared through in situ free radical polymerization of N , N -dimethyl acrylamide and [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl) ammonium hydroxide with polyethylene glycol dimethacrylate as a crosslinker and carboxymethyl chitosan as filler. The gel mass fraction and swelling ratio were measured, and the preparation conditions were optimized. The result indicated that the hydrogel possessed a unique thermo-/pH−/ ion-sensitive behavior. The swelling ratio increased with the increase of temperature and ion concentration, and showed a decreasing trend with the increase in pH. In addition, the hydrogel was stable when the stimuli changed. Adsorption behavior of the hydrogel to Eosin Y (EY) was systematically investigated. The adsorption process can be described well by the pseudo-second-order kinetic model and Langmuir isotherm model, indicating that it was a chemical adsorption. The experiments indicated that the hydrogel exhibited good antifouling and reusability features. Therefore, the semi-IPN hydrogel with antifouling properties and thermo-/pH−/ion-sensitivity can be easily manufactured is expected to find applications in water treatment fields.
研究领域:
材料科学
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环境科学
·
生物医学工程
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DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yuxuan Zhang,Zaosheng Lv,Jiangqin Wu,Qianwen Xue,Yang Lei,Yanfen Huang
Polyacrylic acid has a wide range of applications in the field of superhydrophilicity, but due to its single composition, there are problems such as insufficient mechanical strength and functional limitations. In order to extend its application, we prepared a new IPN hydrogel PEI-PAA/PDMC. The results show that the new hydrogel loaded on different substrates (stainless steel mesh/filter cloth) possesses superhydrophilicity (WCA < 10°) and underwater superoleophobicity (OCA > 150°). The hydrogels not only separated oil–water mixtures with high throughput and efficiency (98%, 12,000 L m −2 h −1 ), but also separated oil-in-water emulsions by gravity alone (95%, 700 L m −2 h −1 ). Due to the large number of quaternary ammonium groups in the DMC, we have tested the antimicrobial properties of the DMC with excellent results (99.2% inhibition). Compared with previous studies, this paper introduces that PEI has the ability to adsorb heavy metals, and we tested Cu 2+ and found that the adsorption and separation efficiency reached 75%. This study provides new ideas for the direction of wastewater treatment.
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高影响因子
Journal of Coatings Technology and Research
·
2024
·
IF 2.3
Wu Jiangqin,Xue Qianwen,Zhang Yuxuan,Lv Zaosheng,Huang Yanfen,Lei Yang
The exceptional oil–water selectivity and low oil adhesion of hydrogel materials have garnered considerable attention within the realm of oil–water separation. In this paper, semi-interpenetrating polymer networks (semi-IPN) were introduced into polyvinyl alcohol (PVA)/polyacrylamide (PAM) hydrogels, which improved the mechanical properties of the hydrogels due to the presence of physical and chemical crosslinking. The incorporation of SiO 2 nanoparticles into the hydrogel improved the surface energy and roughness, which resulted in superhydrophilic and underwater superoleophobic properties of PVA/PAM/SiO 2 semi-IPN hydrogel-coated stainless-steel mesh (SSM). The SSM coated with hydrogel demonstrated excellent resistance to underwater oil, as evidenced by a contact angle of 156°. The oil–water separation flux was as great as 1.2 × 10 4 L m −2 h −1 , and the separation efficiency exceeded 98%. Furthermore, PVA/PAM/SiO 2 semi-IPN hydrogel-coated SSM is one of the best materials for solving oil–water separation issues due to its recyclability, self-cleaning properties, and stability under acidic and alkaline conditions.
研究领域:
材料科学
·
环境工程
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高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Jie Pan,Xueliang Chen,Yizhen Chen,Wendi Liu,Mingen Fei,Renhui Qiu
An adhesive serves as a vital tool in construction, repair, and rehabilitation projects. Typically crafted from polymer materials such as epoxies or polyurethane latex, it facilitates the creation of resilient bonds between a variety of surfaces, ranging from concrete-concrete and metal-concrete to concrete-composites. However, employing epoxy or polyurethane individually as adhesives often demonstrate insufficient performance and weak interfacial adhesion during service. In this study, an adhesive combining polyurethane and epoxy was synthesized, featuring an interpenetrating polymer network (IPN) structure. This innovative agent was created using polyols sourced from soybean oil and a commercial epoxy resin. By tuning the infusion of polyurethane content, the resultant resin exhibited favorable flowability in civil applications, simultaneously improved strength and toughness due to the IPN structure, and outstanding thermal stability. Notably, the incorporation of 20 wt% polyurethane yielded a polymer with a remarkable tensile strength of 35.9 MPa. Additionally, the bonding adhesion of the prepared resins on concrete specimens was investigated through splitting tensile test and shear strength test. The study explored the influences of polyurethane content, concrete strength, and adhesive layer thickness on interfacial bonding strength. The introduction of an IPN structure within the PU-20 agent proved advantageous for enhancing the bonding adhesion of the concrete, resulting in remarkable interfacial tensile and shear strengths of 4.56 MPa and 21.73 MPa, respectively.
研究领域:
材料科学
·
土木工程
·
高分子化学
·
建筑材料
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高影响因子
CELLULOSE
·
2019
·Vol. 27
·期 2
·825-838
·
IF 3.917
Liao Jing,Huang Huihua
In this study, a novel temperature/pH dual responsive hydrogel, based on Hericium erinaceus residue carboxymethyl chitin (HCMC) and poly ( N -isopropylacrylamide) (PNIPAm), was synthesized by sequential IPN technique. Series of IPN hydrogels were obtained by varying initial N -isopropylacrylamide (NIPAm) concentrations. The structure, morphology, thermal property, transparency, mechanical property, swelling kinetics, temperature/pH responses and 5-Fu release behavior of the prepared hydrogels were systematically investigated. The structure analysis results showed that the IPN hydrogels were successfully synthesized. The prepared hydrogels showed more compact network structure and enhanced mechanical property as NIPAm concentration increased, but reduced transparency, swelling degree and 5-Fu release ratio. More importantly, HCMC and PNIPAm ensured the pH and temperature responses, respectively. 5-Fu could be gradually released from the prepared hydrogels, which followed Fickian diffusion model. Therefore, the prepared hydrogels may be served as promising materials for drug delivery systems.
研究领域:
材料科学
·
生物医学工程
·
药物递送系统
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高影响因子
危险品化学品经营许可证（带存储）