JOURNAL OF THE CHINESE CHEMICAL SOCIETY
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2017
·Vol. 64
·期 2
·231-238
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IF 0.935
Jie Wu,Zongmei Wu,Xuejiao Sun,Shichao Yuan,Ruling Zhang,Qingliang Lu,Yueqin Yu
Sodium alginate (SA) was combined with poly( N -isopropylacrylamide) (PNIPAAm) to prepare thermosensitive hydrogels through semi-interpenetrating polymer network (semi-IPN) and fully interpenetrating polymer network (full-IPN). The thermosensitive, swelling, mechanical, and thermal properties of pure PNIPAAm, SA/PNIPAAm semi-IPN, and Ca-alginate/PNIPAAm full-IPN hydrogels were investigated. The formation of semi-IPN and full-IPN significantly improved the hydrogels’ swelling capability and mechanical properties without altering their thermosensitivity. 5-Fluorouracil (5-Fu) was selected as a model drug to study the release behaviors of the hydrogels. It was found that in vitro controlled drug release from semi-IPN hydrogels showed an initial release burst, followed by a slower and sustained release, before reaching equilibrium. Full-IPN hydrogels showed slow and sustained release during the whole process. Temperature and pH were found to affect the rate of drug release. Ca-alginate/PNIPAAm full-IPN hydrogels have potential application as drug delivery matrices in controlled drug release.
研究领域:
生物材料
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药剂学
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高分子科学
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组织工程
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药物递送系统
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2014
·Vol. 132
·期 9
·
IF 1.64
Yan-Yan Hu,Jing Zhang,Qi-Chen Fang,Dong-Mei Jiang,Chu-Cheng Lin,Yi Zeng,Ji-Sen Jiang
A novel semi-interpenetrating poly(2-hydroxyethyl methacrylate) (pHEMA) based polyelectrolyte hydrogel [p(HEMA- co -METAC)/PEG] was prepared by copolymerizing HEMA with the cationic monomer 2-methacryloyloxyethyltrimethyl ammonium chloride (METAC) in the presence of polyethylene glycol (PEG) with different content and molecular weight (MW 4000 and 400). The chemical structure of the gels was confirmed by FT-IR spectroscopy, morphology study was performed by scanning electron microscope (SEM), thermal stability was revealed by thermogravimetric analysis (TGA), and the mechanical properties were determined by electronic universal testing machine. Swelling studies showed introduction of cationic monomer METAC led to high water content, and the obvious salt and pH sensitive properties were observed which proved the smart behavior of the semi-interpenetrating polymer networks (IPNs) gels. In addition, the effect of temperature and some important biological solution on swelling behavior were reported. Cytotoxicity test demonstrated that synthesized gels owned satisfactory cytocompatibility and were convenient for the application as biomaterials. Finally, the weak bovine serum albumin (BSA) adsorption on semi-IPNs by introducing METAC and controlling the content of PEG in gels demonstrated that they were of good protein resistance effect in biomedical applications. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41537.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
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2014
·Vol. 71
·期 2
·246-253
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IF 1.547
Liu Jian-Guo,Xu Liang,Fang Yong-Qin
Novel hybrid organic–inorganic coatings with interpenetrating network were synthesized by the acid-catalyzed hydrolytic co-polycondensation of tetraethoxysilane and 3-metacryloxypropyltrimethoxysilane, followed by radical polymerization with methyl methacrylate and triallyl isocyanurate (TAIC). The hybrid coatings were characterized by Fourier transformed infrared spectroscopy, thermogravimetric analysis and scanning electron microscope, and their anti-corrosion behaviors were evaluated by potentiodynamic polarization, electrochemical impedance spectroscopy and salt spray test. The results indicated that the hybrid coatings exhibited excellent anti-corrosion ability by forming a physical barrier between metal and its external environment. Thermal stability of the hybrid coatings was increased after the addition of TAIC. Furthermore, hydrophobic properties of the hybrid coatings were examined by measuring the contact angles, and the change in wetting characteristics of the hybrid coatings was not obvious.
研究领域:
材料科学
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表面工程
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腐蚀防护
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DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 5
·773
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IF 5.719
Erli Qu,Junqiao Jiang,Min Xiao,Dongmei Han,Sheng Huang,Zhiheng Huang,Shuanjin Wang,Yuezhong Meng
As a traditional high-temperature proton exchange membrane (HT-PEM), phosphoric acid (PA)-doped polybenzimidazole (PBI) is often subject to severe mechanical strength deterioration owing to the “plasticizing effect” of a large amount of PA. In order to address this issue, we fabricated the HT-PEMs with a crosslinked network of poly (arylene ether ketone) to confine polybenzimidazole in semi-interpenetration network using self-synthesized amino-terminated PBI (PBI-4NH2) as a crosslinker. Compared with the pristine linear poly [2,2′-(p-oxdiphenylene)-5,5′-benzimidazole] (OPBI) membrane, the designed HT-PEMs (semi-IPN/xPBI), in the semi-IPN means that the membranes with a semi-interpenetration structure andxrepresent the combined weight percentage of PBI-4NH2and OPBI. In addition, they also demonstrate an enhanced anti-oxidative stability and superior mechanical properties without the sacrifice of conductivity. The semi-IPN/70PBI exhibits a higher proton conductivity than OPBI at temperatures ranging from 80 to 180 °C. The HT-PEMFC with semi-IPN/70PBI exhibits excellent H2/O2single cell performance with a power density of 660 mW cm−2at 160 °C with flow rates of 250 and 500 mL min−1for dry H2and O2at a backpressure of 0.03 MPa, which is 18% higher than that of OPBI (561 mW cm−2) under the same test conditions. The results indicate that the introduction of PBI containing crosslinked networks is a promising approach to improve the comprehensive performance of HT-PEMs.Keywords:high-temperature proton exchange membrane;semi-interpenetration network;phosphoric acid;poly [2,2′-(p-oxdiphenylene)-5,5′-benzimidazole]
研究领域:
材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Shanshan Ma,Hejun Li,Qiyue Huang,Jie Fei
The development of interfacial engineering was crucial for achieving the industrialization of high-performance carbon fiber/phenolic composites. In this study, establishing scalable interpenetrating networks (cellulose nanofiber-zeolitic imidazolate frameworks-8/aramid nanofiber-boron nitride) on the fiber/matrix interphase, was in favor of realizing precise repairation of interfacial defects , further regulating thermal conductivity , mechanical and tribological properties of the composites. Based on the physical and chemical bridging-effects arising from above spider-web networks, the flexural strength and modulus of modified sample were 74.69 MPa and 6.22 GPa, showing an increase of 135.99% and 56.68%, respectively. Meanwhile, this trans-scale spider-web structure acted as a micron skeleton-nano unit continuous thermal conductive network, significantly reduced phonon scattering and displayed a 258.33% enhancement in the thermal management capability of modified sample. This study reveals key design principles of trans-scale interfacial structure to dynamicly regulate performances and meet service requirements of next-generation carbon fiber/phenolic composites.
研究领域:
材料科学
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工程学
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产品关联
DOI
PubMed
高影响因子
MOLECULES
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2023
·Vol. 28
·期 14
·5470
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IF 4.6
Zhiyu Jin,Xiuyang Zou,Guodong Xu,Zhe Sun,Feng Yan
In this work, a thiol–ene coupling reaction was employed to prepare the semi-interpenetrating polymer network AEMs. The obtained QP-1/2 membrane exhibits high hydroxide conductivity (162.5 mS cm−1at 80 °C) with a relatively lower swelling ratio, demonstrating its mechanical strength of 42 MPa. This membrane is noteworthy for its improved alkaline stability, as the semi-interpenetrating network effectively limits the attack of hydroxide. Even after being treated in 2 M NaOH at 80 °C for 600 h, 82.5% of the hydroxide conductivity is maintained. The H2/O2fuel cell with QP-1/2 membrane displays a peak power density of 521 mW cm−2. Alkaline water electrolyzers based on QP-1/2 membrane demonstrated a current density of 1460 mA cm−2at a cell voltage of 2.00 V using NiCoFe catalysts in the anode. All the results demonstrate that a semi-interpenetrating structure is a promising way to enhance the mechanical property, ionic conductivity, and alkaline stability of AEMs for the application of alkaline fuel cells and water electrolyzers.Keywords:anion exchange membranes;semi-interpenetrating network;fuel cells;water electrolyzers
研究领域:
材料科学
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能源技术
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Wenjing Zhang,Yin Zeng,Fengying Cai,Hongliang Wei,Yuxuan Wu,Hui Yu
Hydrogels based on biopolymers have attracted considerable interest in the last decades. Herein, an interpenetrating network hydrogel (IPN-Gel) adsorbent from starch-chitosan was fabricated facilely in one-pot through tandem Schiff base reaction and photopolymerization. First, aldehyde starch (DAS) was synthesized by the reaction of soluble starch with sodium periodate. Afterward, acrylamide (AM), 2-acrylamido-2-methylpropanesulfonic acid (AMPS), polyethylene glycol dimethacrylate (PEGDMA), photoinitiator, chitosan and DAS were dissolved in water to obtain a clear solution. Schiff base reaction between chitosan and DAS took place quickly to form the first network, and then photopolymerization of AM, AMPS, and PEGDMA occurred under ultraviolet radiation to form the second network. The preparation conditions of the as-prepared IPN-Gel were optimized with two indexes of gel mass fraction and swelling ratio. Its swelling behavior with pH and temperature change was explored. Finally, its adsorption performance was characterized with methylene blue (MB) as a model contaminant. The maximum adsorption capacity of IPN-Gel can reach 2039 mg·g −1 at pH =10. Its adsorption performance accords with Langmuir isothermal model and pseudo-second-order kinetic model and it was mainly controlled by chemisorption. This strategy is expected to found broad application prospects in the preparation of hydrogel adsorbents.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 28
·23233-23241
·
IF 3.289
Jun Wan,Tao Tao,Yong Zhang,Xiangmin Liang,Aijiao Zhou,Chang Zhu
Adsorption has attracted much attention for its effectiveness, low cost and the possibility of regeneration among many phosphorus removal methods. In this study, a novel interpenetrating network (IPN) structural hydrogel based on N-isopropylacrylamide and aluminum alginate was synthesized and applied for phosphate adsorption. SEM, FTIR and XPS were applied to characterize the poly N-isopropylacrylamide/aluminum alginate (PNIPAM/AA) IPN hydrogel beads before and after adsorption. It was found that the maximum adsorption capacity was reached at pH = 3, adsorption capacity decreased with adsorbent dosage increasing, and SO42− had much more negative effects on phosphate adsorption compared with Cl− and NO3−. A pseudo-second-order kinetic model and intra-particle kinetic model fitted well with the experimental data, indicating chemical adsorption and intra-particle diffusion was the rate-controlling step of phosphate adsorption. Moreover, equilibrium isotherm experimental data were well described by the Freundlich and Slips model, suggesting heterogeneous multilayer adsorption was dominant during adsorption process. The regeneration study indicated that the adsorption capacity of adsorbent remained at a relatively high level after five times of regeneration. Column adsorption and regeneration results showed PNIPAM/AA hydrogels had strong phosphate adsorption capacity and had potential in large scale application. Hence, PNIPAM/AA hydrogel beads could be a promising adsorbent for phosphate recycle in the future.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
MATERIALS & DESIGN
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2024
·
IF 7.6
Maojian Li,Yimeng Zhang,Yanan Liu,Guixue Chen,Nanxi Zhao,Chang Liu,Xiang Li,Manli Wang,Jian Song,Zheng Luo
The application of pressure-sensitive adhesives (PSAs) in transdermal drug delivery systems (TDDSs) is limited. Insufficient cohesion in TDDS can lead to cold flow, patch displacement, dose inaccuracies, and the ‘dark ring’ phenomenon. To address these issues, we developed a semi-interpenetrating network (semi-IPN) PSA using a 2-hydroxyethylacrylate-modified acrylic copolymer as the linear polymer and poly[tri(propylene glycol) diacrylate] as the cross-linked network. Semi-IPN PSAs have better mechanical properties compared to traditional PSAs. The cohesion of the semi-IPN PSA was 31 times and 1.6 times that of commercially available DURO-TAK®87-2287 and DURO-TAK® 87–4098, respectively, and the cold flow of the semi-IPN PSA was significantly reduced. Furthermore, the semi-IPN PSA adhered to the human forearm for longer time and did not exhibit the ‘dark ring’ phenomenon after removal. When loaded with flurbiprofen, the semi-IPN PSA was found to maintain high levels of drug release and skin permeation amount, and flurbiprofen loading did not affect its superior cohesive performance. In conclusion, the innovative application of the semi-IPN PSA for TDDS showed excellent mechanical properties, effective adhesion to the skin without irritation, and highly effective drug release. These findings indicate that the use of the semi-IPN is both simple and highly effective for TDDS.
研究领域:
药剂学
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材料科学
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生物医学工程
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产品关联
DOI
高影响因子
CELLULOSE
·
2018
·Vol. 26
·期 3
·1825-1839
·
IF 3.809
Lin Fengcai,Lu Xiangchao,Wang Zi,Lu Qilin,Lin Guanfeng,Huang Biao,Lu Beili
Cellulose hydrogels usually have poor mechanical properties which seriously limit their applications in biomedical or industrial fields. Herein, an interpenetrating polymer network strategy was proposed to construct double network hydrogels composed of cellulose and polyacrylamide with high mechanical strength and pH responsive properties. The synergistic interactions and strong hydrogen bonds between two networks contributed to the dissipation of mechanical energy, as evidenced by the compressive stress–strain and rheology analyses. The compressive strength and compressive modulus for cellulose–polyacrylamide interpenetrating network (C–PAM IPN) hydrogels could reach up to 5.62 and 22.47 MPa, which is nearly 18 and 23 times higher than that of cellulose hydrogels. Moreover, these tough C–PAM IPN hydrogels exhibit pH sensitive properties in various pH solutions. Therefore, this paper provides a general strategy to enhance the mechanical and physical properties of cellulose-based hydrogels, which are potentially useful in developing novel cellulose-based hydrogels and expanding their applications.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Yuxuan Zhang,Zaosheng Lv,Guangli Chen,Yuhang Liu,Yang Lei,Yanfen Huang
Hydrogel, a common hydrophilic material, is often used in wastewater treatment. In order to expand the application of hydrogel in superhydrophilic coatings, we chose acrylic acid (AA) and methacryloyloyloxy ethyltrimethylammonium chloride (DMC), two chemical materials commonly used in wastewater treatment, and semi-interpenetrating networks (semi-IPN) based on the metal mesh structure were successfully polymerization, and a superhydrophilic membrane (PAA/PDMC@SSM(stainless steel mesh)) was prepared. The membrane ensures the efficient separation of different types of oil-water mixtures under high flux conditions (up to 99 % separation efficiency) and the effective removal of oil from water-in-oil emulsions. This green polymer material can be used for efficient oil-water separation as well as separation of water-in-oil emulsions (separation efficiency close to 98 %). In order to prevent microorganisms from clogging the separation membrane during wastewater treatment, it was tested for E. coli with 99 % inhibition. PAA/PDMC@SSM was found to be acid-resistant, durable and self-cleaning for viscous oils.
研究领域:
材料科学
·
环境工程
·
高分子化学
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Yuting Zhang,Suhong Li,Rong Huang,Jing He,Yufei Sun,Yanyan Qin,Lingdi Shen
Two-dimension MXene (Ti 3 C 2 T x ) membrane has attracted widespread interest in water treatment to relieve the problem of clean water shortage. Nevertheless, notorious swelling and subsequent instability problems of the MXene-based membrane when immersing in water hinder its wide application, owing to the weak interaction between the adjacent MXene laminates. Herein, a feasible strategy is proposed to stabilize and tune the nanochannels of MXene-based membranes and achieve superior nanofiltration efficiency. Poly(acrylic acid) (PAA) macromolecules are firstly inserted into the MXene nanosheets and form PAA-modified MXene (PAA-MXene) dispersion. Then, the dispersion is vacuum filtered on the electrospun polyacrylonitrile (PAN) nanofibrous substrate to form an ultra-thin PAA-MXene hydrogel barrier layer, thus assembling into PAA-MXene/PAN composite membrane . The MXene laminates will be intertwined by the long chain of flexible PAA macromolecules and thus form homologous semi-interpenetrating network structure with MXene as physical crosslinker through strong hydrogen-bond interaction, which will restrict the obvious structural change of MXene nanosheets and effectively adjust their d-spacing at ∼14.28 Å with MXene: PAA mass ratio of 1:0.5. The synergic effect of PAA and MXene nanosheets, as well as electrospun PAN nanofibrous substrate, endows the PAA-MXene/PAN membrane with superior nanofiltration performance to various dyes. The optimum PAA-MXene/PAN membrane possesses permeate fluxes of 271.26, 516.34, 300.83 L m −2 h −1 and rejections of 98.92%, 99.52%, 98.12% to DR80, AB8GX and AB90 at 0.1 MPa, respectively, which exhibit distinct advantage than the MXene-based membrane in literature. In addition, the PAA-MXene/PAN membrane has good long-time durability and is more suitable for low pressure nanofiltration. All these make PAA-MXene/PAN membrane a promising nanofiltration membrane for wastewater treatment .
研究领域:
材料科学
·
环境工程
·
水处理技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）