CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Heng Zhang,Xin Gao,Keli Chen,Hui Li,Lincai Peng
In current study, cellouronic acid sodium (CAS), obtained from bagasse pith, has been introduced into poly(acrylamide-co-diallyldimethylammonium chloride) (poly(AM-co-DAC)) network to form novel thermo-sensitive semi-IPNs. The structure and morphology of the hydrogels were proved by Fourier transformation infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The effects of CAS content, initiator charge, cross-linker dosage and swelling-medium property on the thermo-responsive water absorptivity were investigated in detail. The results elucidated that the prepared gels exhibited a thermo-sensibility with an upper critical solution temperature (UCST) and a high water-absorbency. And the values of UCST and equilibrium swelling ratio largely depended on the inner structure of the semi-IPNs and the external solvent property. It was also revealed that the swelling process conformed to the Schott’s pseudo second order model and diffusion type was non-Fickian diffusion. The value of activation energy for this polyelectrolyte was found to be 8.74 kJ/mol.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 18
·6692
·
IF 4.6
Hongcai Wang,Ruhong Yin,Xiuqiong Chen,Ting Wu,Yanan Bu,Huiqiong Yan,Qiang Lin
To enhance the mechanical strength and cell adhesion of alginate hydrogel, making it satisfy the requirements of an ideal tissue engineering scaffold, the grafting of Arg-Gly-Asp (RGD) polypeptide sequence onto the alginate molecular chain was conducted by oxidation of sodium periodate and subsequent reduction amination of 2-methylpyridine borane complex (2-PBC) to synthesize alginate dialdehyde grafted RGD derivatives (ADA-RGD) with good cellular affinity. The interpenetrating network (IPN) composite hydrogels of alginate/polyvinyl alcohol/cellulose nanocrystals (ALG/PVA/CNCs) were fabricated through a physical mixture of ion cross-linking of sodium alginate (SA) with hydroxyapatite/D-glucono-δ-lactone (HAP/GDL), and physical cross-linking of polyvinyl alcohol (PVA) by a freezing/thawing method, using cellulose nanocrystals (CNCs) as the reinforcement agent. The effects of the addition of CNCs and different contents of PVA on the morphology, thermal stability, mechanical properties, swelling, biodegradability, and cell compatibility of the IPN composite hydrogels were investigated, and the effect of RGD grafting on the biological properties of the IPN composite hydrogels was also studied. The resultant IPN ALG/PVA/CNCs composite hydrogels exhibited good pore structure and regular 3D morphology, whose pore size and porosity could be regulated by adjusting PVA content and the addition of CNCs. By increasing the PVA content, the number of physical cross-linking points in PVA increased, resulting in greater stress support for the IPN composite hydrogels of ALG/PVA/CNCs and consequently improving their mechanical characteristics. The creation of the IPN ALG/PVA/CNCs composite hydrogels’ physical cross-linking network through intramolecular or intermolecular hydrogen bonding led to improved thermal resistance and reduced swelling and biodegradation rate. Conversely, the ADA-RGD/PVA/CNCs IPN composite hydrogels exhibited a quicker degradation rate, attributed to the elimination of ADA-RGD by alkali. The results of the in vitro cytocompatibility showed that ALG/0.5PVA/0.3%CNCs and ADA-RGD/PVA/0.3%CNCs composite hydrogels showed better proliferative activity in comparison with other composite hydrogels, while ALG/PVA/0.3%CNCs and ADA-RGD/PVA/0.3%CNCs composite hydrogels displayed obvious proliferation effects, indicating that PVA, CNCs, and ADA-RGD with good biocompatibility were conducive to cell proliferation and differentiation for the IPN composite hydrogels.Keywords:alginate;interpenetrating network composite hydrogels;cellular adhesion;cellular adhesion;tissue engineering
研究领域:
生物材料学
·
组织工程学
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 64
·51631-51641
·
IF 3.84
Rui Wang,Xin Jiang,Ai He,Tao Xiang,Changsheng Zhao
The application of chitosan (CS) as adsorbent was limited by its poor acidic resistance, solubility in organic solvents and miscibility with synthetic polymers. In this study, an effective way was utilized to increase the amount of CS in hybrid particles together with good acid–alkali resistance and mechanical strength. CS was chemically modified and in situ cross-linked in polymer solutions to prepare hybrid particles with a semi-interpenetrating network (semi-IPN) structure. Polyethersulfone (PES) was chosen as a representative polymer matrix to prepare hybrid particles; and the PES/CS-derivative particles exhibited good adsorption capacity to the toxin bilirubin without procoagulant activity and adsorption capacity to Cu2+. Furthermore, the PES/CS-derivative hybrid particles exhibited selective adsorption to the anionic dye Congo Red (CR) and the environmental hormone bisphenol A (BPA) compared with other dyes or phenols. The results indicated the hybrid particles had versatile applications in blood purification and wastewater treatment.
研究领域:
材料科学
·
生物医学工程
·
环境科学
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DOI
高影响因子
Nanoscience and Nanotechnology Letters
·
2019
·Vol. 11
·期 3
·361-369
·
IF 0
Zhu Yinghua,Cao Jiang,Li Baohua,Wang Yanjie,Liang Linfu,Chen Hong
Polymer electrolyte is an effective way to solve stability and security issues in lithium (Li) metal anode caused by nonuniform lithium deposition and unstable solid electrolyte interphase (SEI). However, it still remains a challenge to obtain an electrolyte that combines high ionic
conductivity and mechanical properties. Herein, we used nano-SiO2 grafted with reactive groups as crosslinkers to cooperate with PEO to construct a composite polymer network. And this polymer network was further interpenetrated with PVDF-HFP to build a Semi-IPN gel composite polymer
electrolyte (Semi-IPN-GCPE) by simple UV curing. The polymer electrolyte exhibited high ionic conductivity (2.71 × 10–3 S cm–1 at room temperature), wide electrochemical stable window (∼5 V vs. Li/Li+), considerable tensile strength (7.04
MPa), breaking strain (248.1%), good thermal stability up to 330 °C and excellent stability with lithium metal anode. The assembled Li/Semi-IPN-GCPE/LiFePO4 cell delivered specific capacities of 103 mAh g–1 at 10 C and presented above 90% capacity reten- tion
after 300 cycles at 1 C. Our work provides a facile approach to preparing dendrite-suppressing polymer electrolytes with potential applicability in next-generation Li metal batteries.
研究领域:
材料科学
·
储能技术
·
聚合物化学
·
电化学
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锂离子电池
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DOI
Gels
·
2025
·Vol. 11
·期 10
·766
·
IF 5.3
Ning Wang,Ming He,Longjiao Wang,Chuanjie Lei,Linyufan Xiao,Yingjie Li,Shuan Liu
An optical fiber sensor based on a HEMA/AM/SA interpenetrating polymer network (IPN) hydrogel is proposed for monitoring the concentration of Pb2+. The Fabry–Perot interference cavity is constructed from a single-mode fiber, a ceramic ferrule, and an IPN hydrogel layer. P (HEMA co AM)/SA IPN hydrogel films were prepared by a step-by-step crosslinking method, which had good mechanical properties, swelling properties, and Pb2+adsorption capacity. The Pb2+concentration changes cause the interference spectrum shift of the sensor. By monitoring the wavelength shift under different Pb2+concentrations, the sensor sensitivity in the range of 0~1 ppm Pb2+concentration in solution is 5.0743 nm/ppm with 0.994 linearity. The influence of different proportions of IPN hydrogel on the performance of the sensor was studied. In the range of 10–90% HEMA, higher sensitivity is obtained by a small weight ratio of HEMA/AM. The sensor stability, repeatability, selectivity, dynamic response, and temperature response are also investigated in experiments. Experimental results demonstrate that the proposed sensor exhibits good stability, sensitivity, repeatability, and selectivity. Owing to its compact structure, straightforward fabrication, low cost, and good sensing performance, this sensor shows strong potential for application in monitoring Pb2+concentrations.
研究领域:
生物医学工程
·
环境监测
·
传感器技术
·
功能材料
·
分析化学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Fuhui Lai,Liang Xu,Jing Zhang,Junfeng Qian,Qun Chen
High-performance aerospace core materials are required to combine low thermal conductivity and high load-bearing capacity at low density, while maintaining dimensional stability under thermo-mechanically coupled conditions. However, it remains challenging to simultaneously achieve low density, high mechanical strength, excellent thermal stability and reliable flame retardancy within a single-material system. To address this issue, an inorganic silicate and an aminosilane coupling agent were introduced into the polymethacrylimide (PMI) system. Through in situ hydrolysis and condensation, a continuous Si-O-Si inorganic skeleton was constructed. Meanwhile, interfacial chemical coupling between the organic and inorganic phases was promoted by the aminosilane, enabling efficient molecular-level integration of the rigid inorganic network with the flexible organic matrix and thereby generating an organic-inorganic interpenetrating polymer network (IPN)-like PMI aerogel. Benefiting from this unique interpenetrating topology, the aerogels exhibit outstanding mechanical performance, with a stress of 11.19 MPa at 70% strain, excellent high-temperature dimensional stability, with an accumulated strain of 2.96% over 3 h at 200 °C under a constant stress of 0.2 MPa, and a low thermal conductivity of 0.0492 W·m −1 ·K −1 at room temperature. In addition, the aerogels show good intrinsic flame retardancy, with the limiting oxygen index (LOI) increasing from 29.6% to 31.1% as the inorganic silicate content increases from 7 wt% to 10 wt%, which is attributed to the protective effect of the inorganic siloxane network during combustion. These results provide useful design guidance for the development of integrated load-bearing and thermal-insulating materials for extreme conditions.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Chao Zhou,Chengju Sheng,Lingling Gao,Jia Guo,Peng Li,Bo Liu
The development of treatment of wound healing cannot meet clinical requirements owing to the complex bacteria-infection and inflammatory reaction. It is necessary to develop wound dressings that are fast antibacterial property, anti-inflammation and promoting cell migration and proliferation for shortening wound healing period. In this work, we first synthesized two poly(ionic liquids) (PILs): poly(1-ethyl-3-vinylimidazolium furan-2-carboxylate) (PEIF) and poly(1-butyl-3-vinylimidazolium furan-2-carboxylate) (PBIF). The PILs were then mixed with 5 wt% montmorillonite (MMT) clay and 2-furfurylamine-modified hyaluronic acid (HAF), and chemically crosslinked with four-arm maleimide-polyethylene glycol (Mal 4 PEG) to form degradable semi-inter penetrate network (semi-IPN) hydrogels. In vitro assays demonstrated that the synthesized semi-IPN hydrogels exhibited high antibacterial activities against Escherichia coli and Staphylococcus aureus due to the high antibacterial activity of PILs. Furthermore, the semi-IPN hydrogel could be quickly degraded, and the PILs exhibited high anti-inflammatory activities when they were released from degraded hydrogels. The degradation solutions of hydrogels contained glycosaminoglycan, which was beneficial to cell proliferation and migration. The in vivo anti-infection results further demonstrated that the semi-IPN hydrogels could kill S. aureus and accelerate the healing of infected wounds.
研究领域:
生物材料学
·
医学工程
·
药剂学
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Mengxiao Wang,Lidan Fan,Gang Qin,Xiaoyi Hu,Yijie Wang,Changying Wang,Jia Yang,Qiang Chen
To meet the requirement of the flexible supercapacitors , the enhancement of the mechanical properties of the gel polymer electrolyte (GPE) membrane attracts more and more attention. Here a novel PAM-PVP GPE has been developed with a semi-interpenetrating (semi-IPN) structure, which can achieve the superior flexibility and stretchability (elongation at break of 17.42 mm/mm), meantime, the ionic conductivity reaches 0.138 S/cm. The PAM-PVP-H 3 PO 4 GPE supercapacitor shows outstanding cycle stability and can bear complex deformations including bending and stretching. In addition, it possesses the stable electrochemical performances (65% capacitance retention) at -20 °C. The supercapacitor is promising for the application in the flexible electronic devices under low temperature condition.
研究领域:
材料科学
·
能源存储技术
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产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2014
·Vol. 2
·期 23
·3646-3658
·
IF 0
Xinyu Hu,Liandong Feng,Aming Xie,Wei Wei,Shiming Wang,Jianfa Zhang,Wei Dong
Salecan is a novel water-soluble β-glucan produced by a salt-tolerant strain Agrobacterium sp. ZX09 which was isolated from a soil sample in our laboratory and the 16S rDNA sequence of this novel strain was deposited in the GenBank database under the accession number GU810841. Salecan has excellent physicochemical properties and can be used in industries such as food and medicine. In this paper, novel semi-interpenetrating polymer network (semi-IPN) hydrogels based on salecan and polyacrylamide (PAAm) were synthesized by radical polymerization/cryopolymerization and semi-IPN techniques. The resulting hydrogels with different salecan/PAAm composition ratios and preparation temperatures were characterized using FTIR, XRD, TGA and SEM measurements. The semi-IPNs exhibited a homogeneous porous architecture with a tunable pore size in a very broad range of 5–150 μm. Furthermore, swelling behaviors of the hydrogels were also studied to investigate the response properties of the hydrogels. The hydrogels obtained at subzero temperature can attain the equilibrium state in water within 260 seconds. Mechanical measurements showed that all semi-IPNs possessed good mechanical properties. In vitro degradation was also studied in PBS solution. Cytotoxicity results suggested that semi-IPN hydrogels were non-toxic to COS-7 cells. A cell culture experiment performed using COS-7 cells revealed their appropriateness for cell adhesion. Together, these results make salecan/PAAm semi-IPNs promising materials for biomedical applications.
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产品关联
DOI
PubMed
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 140
·期 3
·e53325
·
IF 3.057
Xiaomei Liu,Tao Feng,Wenbin Ding,Wei Zeng,Na Wang,Fenghong Yang,Cailing Yang,Shenghua Yang,Yanrong Kong,Ziqiang Lei
In this article, a tamarind seed gum-g-poly (acrylic acid-co-2-Acrylamido-2-methyl-1-propane sulfonic acid/polyvinyl alcohol) (TSG-g-P[AA-co-AMPS/PVA]) was prepared by aqueous solution polymerization. The Fourier transform infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis were used to characterize. The swelling behaviors, reusability and water-retention capabilities of hydrogels were evaluated. Under optimum synthesis conditions, the maximum equilibrium absorption of hydrogel was 1295 g·g −1 , 208 g·g −1 , 116 g·g −1 in deionized water, tap water and NaCl solution (0.9 wt%) respectively. Application of the hydrogel to soils increased their water-holding and fertilizer retention capacities. Furthermore, the excellent water retention anti-evaporation performance indicated that the hydrogel has the potential for applications in future sustainable agriculture and forestry.
研究领域:
材料科学
·
农业科学
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产品关联
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Yuxuan Zhang,Pengyu Yang,Mengyun Shen,Yuanyuan Lu,Zaosheng Lv,Yanfen Huang
Fog, a ubiquitous natural phenomenon, wreaks havoc on medical and transportation sectors, spurring an intense quest for cutting-edge anti-fog coatings. This study introduced an interpenetrating polymer network (IPN) structure into polyacrylic acid (PAA), addressing the issue of high swelling ratio in PAA. This enhanced the mechanical properties of the hydrogel, thereby improving light transmittance and endowing the PAA-based superhydrophilic coating with anti-fog functionality. By incorporating nano-SiO 2 particles into this polymer solution, we developed an organic-inorganic composite anti-fog coating. This coating inherently exhibits high light transmittance (95 %). At a nano-SiO 2 content of 10 %, the coating demonstrates resistance to temperatures as low as −70 °C (transmittance 91.7 %) and acid resistance (transmittance 90.7 %). It maintains excellent anti-fog performance after rice abrasion testing and cyclic anti-fog testing. Additionally, the prepared anti-fog superhydrophilic coating possesses antibacterial properties (99 % inhibition rate).
研究领域:
材料科学
·
高分子化学
·
表面涂层技术
·
纳米材料
·
功能材料
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Yuhua Liu,Hongliang Wei,Songmao Li,Gang Wang,Tao Guo,Huayun Han
Clean and safe water resources play a key role in environmental safety and human health. Recently, hydrogels have attracted extensive attention due to their non-toxicity, controllable performance, and high adsorption. Herein, a semi- interpenetrating network hydrogel (semi- IPN -Gel) adsorbent based on quaternary cellulose (QC) was prepared by the amino-anhydride click reaction between maleic anhydride copolymer and polyacrylamine hydrochloride (PAH), and its adsorption properties for Eosin Y were studied. First, a binary copolymer (PAM) of acrylamide and maleic anhydride was synthesized by free radical polymerization. Then, the PAM, QC and PAH were dissolved in water, and the pH of the solution was adjusted to alkaline. Semi-IPN-Gel was successfully prepared by fast anhydride-amino click reaction. The preparation conditions of hydrogels were optimized by single-factor experiments. Finally, taking Eosin Y as a model pollutant, the adsorption performance of Eosin Y was studied. The factors influencing the adsorption capacity of the absorbents such as initial concentration of the Eosin Y, temperature, the amount of absorbent, ionic strength and pH of the Eosin Y solutions were investigated. And adsorption data were analyzed via the kinetic model and the isothermal model, indicating that the adsorption process of the hydrogel is a single layer chemisorption process.
研究领域:
环境科学
·
材料科学
·
水处理
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）