POLYMER ENGINEERING AND SCIENCE
·
2021
·Vol. 62
·期 1
·116-128
·
IF 2.428
Xiuqiong Chen,Huiqiong Yan,Chaoling Bao,Qingmei Zhu,Zhaowen Liu,Yanshi Wen,Zhengyue Li,Tong Zhang,Qiang Lin
Interpenetrating polymer network (IPN) is generally considered to be one of the most effective methods for imparting high-strength mechanical properties to hydrogel materials. To broaden the application of alginate hydrogel in skeletal muscle or muscle tissue engineering, the interpenetrating network technology and layer-by-layer (LBL) electrostatic assembly were proposed to fabricate the homogeneous alginate/polyacrylamide–chitosan–gelatin (Alg/PAAM–CS–GT) composite hydrogel scaffolds, using the hydroxyapatite/ d -glucono-δ-lactone (HAP/GDL) complex as the gelling system. The effects of different components of alginate/polyacrylamide (Alg/PAAM) on the morphology, mechanical properties, swelling, degradability, and cytocompatibility of the hydrogel scaffolds were comparatively characterized. Experimental results showed that the as-prepared Alg/PAAM–CS–GT composite hydrogel scaffolds exhibited sharp edges and regular 3D structures. Their pore structure could be regulated by changing the content of PAAM in Alg/PAAM–CS–GT composite hydrogel scaffolds. And the filling of PAAM reduced the pores and thickened the pore walls, which obviously enhanced the mechanical properties of Alg/PAAM–CS–GT composite hydrogel scaffolds. FT-IR and thermogravimetric analysis showed that O‧‧‧N hydrogen bonding between COOH of SA and NH 2 of PAAM could be helpful to improve the thermal stability of the composite hydrogel scaffolds. The swelling and biodegradation measurements indicated that the swelling and degradation of Alg/PAAM–CS–GT composite hydrogel scaffolds could be effectively regulated by changing the component content of the composite hydrogel. In addition, the in vitro cytocompatibility analysis showed that the Alg/PAAM–CS–GT composite hydrogel scaffolds could support the growth of MC3T3-E1 cells and promote cell proliferation and differentiation. According to the in vitro cytocompatibility test results, the optimum PAAM content for the Alg/PAAM–CS–GT composite hydrogel scaffolds was 60%. Because of good morphology, well-developed pores, excellent mechanical properties, and high biological activity of Alg/PAAM–CS–GT composite hydrogel scaffolds, they could be suitable for application in the tissue engineering field.
研究领域:
生物材料学
·
组织工程学
·
再生医学
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2020
·Vol. 61
·期 3
·731-741
·
IF 1.917
Aixue Dong,Huimin Wu,Ruirui Liu,Qiang Wang,Xuerong Fan,Zhen Dong
In this study, nonpolar octyl gallate (OG), dodecyl gallate (DG), and octadecyl gallate (OCG) were grafted onto the surface of hydrophilic jute fabrics, which were mediated by horseradish peroxidase to improve the hydrophobicity of jute materials. The gallate-grafted jutes were characterized by infrared spectroscopy and grafting percentage (Gp), and the hydrophobic properties were evaluated by water contact angle and wetting time measurements. The Gps determined by saponification was 3.91%, 5.12%, and 4.58% for OG, DG, and OCG, respectively. The nonpolar chain length and the grafting rate of the monomers had a considerable effect on the hydrophobicity of the modified jute fabrics. The as-prepared hydrophobized jute fabrics had superior interfacial compatibility with nonpolar resins, such as polypropylene (PP) and polylactic acid (PLA) making them most suitable to be utilized in the development of jute fiber-reinforced thermoplastic composites. The tensile and dynamic mechanical properties of the grafted jute/PP or jute/PLA composites were improved compared with pure PP, PLA, and non-modified jute composites.
研究领域:
材料科学
·
生物化学
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2019
·Vol. 59
·期 8
·1657-1666
·
IF 1.92
Shuai Li,Ximan Bu,Linlin Wu,Xiaofeng Ma,Wenjing Diao,Zhenzhen Zhuang,Yongmin Zhou
The emerging applications of hydrogels in flexible devices require it possess multifunctional properties including stable mechanical and functions under various deformations or external environments. Herein, a multifunctional polyvinyl alcohol/M-alginate/PAM hydrogel with very excellent mechanical properties and sensing functions was fabricated by introducing multiple pairs of toughing mechanisms into triple network (TN). The multiple supramolecular physical networks work as sacrificial networks to toughen the materials when hydrogel deforms. The broken bonds can reform upon unloading endowing the recovery of hydrogels' properties and functions with the assistance of the elastic covalent network. The optimal TN hydrogels are extremely tough (a fracture strength of 512 kPa, a fracture toughness of 3 MJ/m 3 ) and recoverable from fatigue damage (~77% toughness recovery after 5 min resting at room temperature). The presence of abundant ionic species endows the tough and recoverable TN hydrogels high ionic conductivity and high sensitivity as strain sensors. Moreover, such TN hydrogels with multi-bond crosslinking in three networks can potentially guarantee stable mechanical and sensor functions under various deformations or external environments compared to the DN candidates. This work provides a simple strategy for fabricating multifunctional hydrogels with high stability to fulfill its flexible devices applications. POLYM. ENG. SCI., 59:1657–1666 2019. © 2019 Society of Plastics Engineers
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2021
·Vol. 62
·期 2
·576-585
·
IF 2.428
Yang Liu,Tingting Liu,Xiangchi Liu,Baijun Liu,MingYao Zhang
In this research, monodispersed polystyrene (PS) microspheres were prepared by dispersion polymerization. PS microspheres decorated with silver nanoparticles (PS/Ag composite microspheres) were synthesized by a modified chemical plating method with water as the synthesis medium. The microspheres at each stage were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), UV–visible spectroscopy (UV–vis), field-emission scanning electron microscopy (FESEM), and energy-dispersive spectrometer (EDS). The reduction of methylene blue (MB) was carried out with PS/Ag composite microspheres as a catalyst and NaBH 4 as a reducing agent. The results showed that the MB dye was reduced to colorless within 180 s. The reduction of the MB dye followed pseudo-first-order kinetics with an apparent rate constant (K app ) value of 0.01425 s −1 . Control experiments were also carried out by adding microspheres from each chemical plating pretreatment stage to the MB, without PS/Ag composite microspheres. The catalytic activity of the PS/Ag composite microspheres was high after five consecutive cycles of recovery, showing promising reusability. The catalytic activity of the prepared PS/Ag catalysts was superior to other catalysts for the reduction of MB.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2012
·Vol. 52
·期 11
·2473-2481
·
IF 1.302
Zien Fu,Huan Liu,Hualun Cai,Xin Liu,Guo Ying,Kai Xu,Mingcai Chen
Three difunctional fluorene-based benzoxazine compounds were synthesized via Mannich condensation and were characterized by proton nuclear magnetic resonance spectroscopy ( 1 H NMR), Fourier transform infrared spectroscopy (FTIR), and elementary analysis (EA). The polymerization of benzoxazine monomers were investigated with differential scanning calorimeter (DSC) method. Thermal properties of the polybenzoxazines were studied by thermogravimetric analysis (TGA) and DSC. Water absorption of the polybenzoxazines was tested. Contact angle measurement was employed to characterize the surface property of materials. The glass transition temperatures ( T g s) and thermal stability were improved significantly in comparison with bisphenol-A-based analogue because of the incorporation of rigid fluorenyl group. The fluorenyl-based polybenzoxazines showed hydrophobic characteristics, which was ascribed to the low polarity of fluorenyl and pi–pi stacking interaction of fluorenyl on the surface. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2011
·Vol. 51
·期 8
·1662-1668
·
IF 1.296
Han Ding,Zheng Wang,Lijiao Sheng,Gongwu Song
Polymer ( N , N -dimethyl-ethylamine methacrylate)-block-poly{6-[4-(4-methoxy phenyl-azo) phenoxy] hexylacrylate} p(DMAEMA m - b -AZOM n ) was synthesized by successive reversible addition-fragmentation chain transfer polymerization in the hydrothermal reactor. The products were characterized by hydrogen nuclear magnetic resonance, differential scanning calorimetry, gel permeation chromatography, and ultraviolet and visible absorption spectroscopy (UV-vis). In H 2 O/THF mixture, we found amphiphilic p(DMAEMA m - b -AZOM n ) self-assembles occurred. p(DMAEMA 79 - b -AZOM 7 ) self-assembled into rods, p(DMAEMA 79 - b -AZOM 5 ) self-assembled into giant microspheres with rods wind around, p(DMAEMA 79 - b -AZOM 2 ) self-assembled into microspheres. Photochromic behaviors of the polymers in different environments were investigated. We found the colors of diblock copolymers in films changed from yellow to orange after irradiation by ultraviolet and visible (UV) light. The rates of trans-cis photoisomerization in films were almost the same for the three p(DMAEMA m - b -AZOM n ) copolymers. The rates in aqueous micellar solutions were only marginally faster than those in films for all the three diblock copolymers. The observation of a sizable rate difference in different environments for p(DMAEMA m - b -AZOM n ) suggested that a rotational mechanism might be operative for these water-soluble amphiphilic diblock copolymers. The self-assembly behaviors of three copolymers and the application of p(DMAEMA 79 - b -AZOM 2 ) microspheres in biochemistry were investigated in present work. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers
研究领域:
高分子化学
·
材料科学
·
生物学
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2022
·Vol. 62
·期 10
·3390-3399
·
IF 2.573
Yanping Duan,Guangli Dong,Ruijie Wu,Xia Zhao,Mingwei Li,Fengfeng Zhang,Zhimin Song,Hong Hao
Oil contamination is problematic in subaqueous environments. Here, a cationic poly(N,N-dimethyl-N-(ethoxycarbonylmethyl)-N-[2′-(methacryloyloxy)ethyl]- ammonium chloride) (PCBMAE) was synthesized, and a one-step approach of dopamine-assisted codeposition was used to generate PCBMAE/polydopamine (PDA) superhydrophilic and underwater superoleophobic coatings coated on a stainless steel mesh for oil/water separation. The structures, surface morphologies, and properties of the coatings were analyzed by IR, SEM, TGA, and contact angle measurements. During deposition at a PCBMAE and DA mass ratio of 1:1, PCBMAE/PDA mixture particles uniformly adhered to the skeletons of the mesh, increased the surface roughness, created enriched surface micro/nanostructures, and reduced the surface energy of the coating. This endowed the metal mesh with superhydrophilicity and underwater superoleophobicity (oil contact angle 163°) without blocking the mesh, and the deposition density was 0.26 mg/cm 2 . The separation efficiency of the coated mesh was 99.6% for the first castor oil/water separation and dropped to 98.0% after 5 cycles. After 25 cycles, the separation efficiency was still higher than 95%. The PCBMAE/PDA codeposited mesh exhibited high oil/water separation efficiency, stable mechanical properties, and weather stability under different harsh environments, making it a promising separation material for future industrial applications.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2021
·Vol. 61
·期 5
·1405-1414
·
IF 2.428
Fuqiang Liu,Nan Ma,Jun Liu,Qiongqiong Zhu,Ting Yue,Junhui Ma,Yuan Wang,Wei Qu,Paul K. Chu,Yan Tang,Wei Zhang
The chains and segments of unordered cationic polypeptides are complex and may produce unexpected biological activities. Herein, the Ugi's 4CC reaction is adopted to synthesize a cationic alternating copolymer comprising ornithine and glycine (poly(Orn-alter-Gly)) with an ordered sequence for enhanced bacterial resistance. In this technique, potassium isocyanate, 4-(N-carbobenzyloxyamino)-1-butyraldehyde and 1-(4-Methoxyphenyl)ethylamine react to produce MPE-substituted poly(Orn-alter-Gly) in one step without using a catalyst and then poly(Orn-alter-Gly) is obtained by removing the N-(1-p-methoxyphenethyl) (MPE) group. 1 H NMR, Fourier transform infrared spectroscopy, and automatic amino acid analysis confirm that ornithine and glycine are linked alternately in the poly(Orn-alter-Gly) chains. Both MPE-substituted poly(Orn-alter-Gly) and poly(Orn-alter-Gly) have excellent antibacterial activity against Staphylococcus aureus , Escherichia coli , Klebsiella pneumoniae , and Pseudomonas aeruginosa as well as excellent biocompatibility. The synthesis strategy and materials provide new information on how to obtain ordered sequence cationic polypeptides.
研究领域:
聚合物化学
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材料科学
·
生物医学工程
·
微生物学
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Junrui Duan,Yuesheng Zhang,Zhiguo Hu,Hongtao Lu,Jianna Bao
Although blending brittle polylactide (PLA) with flexible poly(ε-caprolactone) (PCL) holds promise for developing biodegradable materials with tunable mechanical properties, their poor compatibility poses a significant challenge to effective toughening. In this study, PLA/PCL blends with varying Dibutyl itaconate (DBI) content were prepared via melt blending, and the effects of DBI loading on the properties of the blends were systematically investigated. The results demonstrated that the incorporation of DBI enhanced the intermolecular interactions between PLA and PCL chains, thereby improving their compatibility. The phase interface between the PLA matrix and the PCL dispersed phase became so progressively blurred with increasing DBI content that it was nearly indistinguishable at a loading of 7 phr, demonstrating a significant improvement in compatibility. With the increase in DBI content, both the elongation at break and impact strength of the blends exhibited a trend of initial increase followed by a decrease. At the optimal loading, the maximum values reached 314.3% and 29.5 kJ/m 2 , representing enhancements of 3.4-fold and 4.9-fold, respectively, compared to those of the neat PLA/PCL blend. Simultaneously, the crystallization rate and enzymatic degradation rate of the blends increased continuously with higher DBI content. This study opens a new avenue for developing high-toughness PLA-based blend materials without compromising their biodegradability. Summary DBI enhanced both elongation at break and impact strength of PLA/PCL blends. The incorporation of DBI improved the compatibility between PLA and PCL. The crystallization capability of the modified blends was enhanced. The modified blends showed an increased degradation rate.
研究领域:
材料科学
·
高分子科学
·
可生物降解材料
·
聚合物共混
·
力学性能
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2024
·
IF 3.2
Wenlong Ma,Tianxu Hao,Xinya Wang,Wei Zhang,Yonggui Li,Mingxing Chen
In this paper, a high-performance composite nanofiber membrane with excellent air filtration and dye degradation properties was prepared by incorporating MIL-53(Fe) nanoparticles into the electrospinning solution. The results showed that the filtration efficiency for PM2.5 of the PP/PVDF-HFP/MIL-53(Fe) composite nanofiber membrane reached up to 99.3% with the addition of 2 wt% MIL-53(Fe). Moreover, the composite nanofiber membrane exhibited steady filtration efficiency across different parameters, including air velocity, PM2.5 concentration, and extended testing time. Furthermore, the incorporation of MIL-53(Fe) significantly enhanced the removal efficiency of the composite nanofiber membrane toward Rh B, resulting in a remarkable 91% removal rate. The polymer/MOF composite nanofiber membranes prepared by simple and cheap electrospinning technology have a wide range of practical applications in the field of environmental protection. Highlights PPM composite nanofiber membrane was prepared via electrospinning method. MIL-53(Fe) nanoparticles were introduced to PPM composite nanofiber membrane. PPM composite nanofiber membrane showed excellent removal efficiency for PM2.5. PPM composite nanofiber showed a good removal performance for RhB in solution.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2024
·
IF 3.2
Zhihao Zhang,Zhiyuan Yao,Yujing He,Senlong Yu,Meijia Chen,Zhenjiang Shi,Jiaxu He,Hengxue Xiang,Meifang Zhu
In this work, a series of 1,4-cyclohexanedimethanol (CHDM)-based copolyester fibers are prepared by chemical structure design and crystal structure regulation. The chemical structures of poly(ethylene terephthalate-co-1,4-cyclohexanedimethylene terephthalate, (PETG)) copolyesters are first confirmed by 1 H- and 13 C-nuclear magnetic resonance which indicates that all copolyesters are random copolyesters. Then, the crystallization and melting behavior, thermal stability, and mechanical properties of copolyesters are significantly affected by the CHDM content and CHDM cis-trans isomerism ratio, showing that trans-CHDM can effectively improve the comprehensive performance of PETG copolyesters. Besides, the influence of the CHDM monomer (amount and cis-trans isomerism ratio) and melt-spinning drawing process on the crystal structure and mechanical properties (tensile strength, elongation) is also investigated by wide-angle X-ray diffraction, small-angle X-ray scattering, and tensile testing. Especially, the resultant PETG30-trans80 copolyester fibers exhibit good mechanical properties, and the tensile strength and elongation are 113.9 MPa and 136.5%, respectively. Therefore, our work provides a promising strategy for the fabrication of copolyester fiber. Highlights Bio-based PETG copolyester was obtained. Synergistic effects of a chemical structure and drawing process of PETG fiber were discussed. The influence of drawing process on crystallization, and orientation of fiber properties was studied.
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 ENGINEERING AND SCIENCE
·
2024
·
IF 3.2
Tian Pan,Li Yuan,Guozheng Liang,Aijuan Gu
A series of supramolecular interaction-based polyurethane elastomers (SPUEs) were synthesized from the reactions of hexamethylene diisocyanate-functionalized 2-ureido-4[1H]-pyrimidinone (UPy) derivatives and polytetrahydrofuran (PTHF), followed by reactions with polyether amines. The tensile strength, elongation at break and toughness of the optimum SPUE system can reach 62 MPa, 693%, and 189 MJ·m −3 , respectively. All SPUEs have much higher tensile strength and toughness than the reference materials while maintaining large elongation at break owing to the increased hydrogen (H)-bonding sites and favorable crosslinked networks. SPUEs possess double glass transition temperatures and display good multi-shape memory behaviors resulting from different soft and hard domains. SPUEs have nanophase-separated structures, which endow them with excellent transparency within visible light wavelengths ranging from 500 to 800 nm. Owing to adequate H-bonds, SPUEs exhibit stress relaxation, shape-reconfigurability, and outstanding healing/recycling properties. The damaged SPUEs show high healing efficiency of 77–97% after heat treatment at 100°C for 12 h. The used SPUEs can be recycled multiple times by dissolving them in N, N-dimethylformamide (DMF) at ~110°C for 20–30 min, and the third recycled SPUEs can have high mechanical strength retention rate of up to 100%. Highlights Elastomer was constructed through H-bonds and favorable crosslinked networks. The elastomer has high comprehensive mechanical properties. The elastomer has extremely low and high glass transition temperatures. The elastomer has a high self-healing efficiency of ~97% after treatment at 100°C. The elastomer can be recycled multiple times.
研究领域:
材料科学
·
化学工程
✓ 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）