RSC Advances
·
2015
·Vol. 5
·期 93
·76526-76537
·
IF 3.84
Jiabing Ran,Jingxiao Hu,Guanglin Sun,Si Chen,Li Chen,Xinyu Shen,Hua Tong
In this research, gelatin-tussah silk fibroin/hydroxyapatite (GEL-TSF/HAp), gelatin-Bombyx mori silk fibroin/hydroxyapatite (GEL-BMSF/HAp), and gelatin/hydroxyapatite (GEL/HAp) nano-composites were synthesized by a novel in situ precipitation method. Characterizations, including surface morphology, elemental composition and distribution, structure of the crystalline phase, mechanical strength, thermal stability, and in vitro cytocompatibility, were carried out. Investigations on the crystalline phase showed that rod-like HAp crystallites in the GEL-TSF/HAp composite had a higher aspect ratio than those in the GEL-BMSF/HAp composite and the GEL/HAp composite. In addition, the GEL-TSF/HAp composite also presented better thermal stability than the other two composites revealed by differential thermal analysis (DTA) and thermogravimetric analysis (TGA). Mechanical properties testing indicated that the GEL-TSF/HAp composite had a higher elastic modulus at low strain and higher compressive modulus at high strain simultaneously than the other two composites. An in vitro cell culture showed that MG63 osteoblast-like cells on the GEL-TSF/HAp membrane took on higher proliferative potential than those on the GEL-BMSF/HAp membrane. These results indicated that compared to the GEL-BMSF/HAp composite, the GEL-TSF/HAp composite was more suitable for bone tissue engineering (BTE) applications.
研究领域:
生物材料学
·
医学工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2017
·
IF 3.671
GuoHua Wu,Peng Song,DongYang Zhang,ZeYu Liu,Long Li,HuiMing Huang,HongPing Zhao,NanNan Wang,YanQiu Zhu
This paper reports the impacts of direct feeding silkworms with different nanoparticles (Cu, Fe, and TiO 2 ) on the morphology, structures, and mechanical properties of the resulting silk fiber (SF). The contents of the Cu nanoparticles were 38 times higher in the posterior silk glands and only 2–3 times higher in the SF and in the middle silk glands compared with the controlled groups. Significant changes of the surface morphology, structures, and diameter of the Cu nanoparticle fed SF have been observed, which are attributed to a slight SF protein reconstruction or conformational change in the mixture of silk fibroin and sericin in the silk glands. The resulting Cu-containing SF exhibits good tensile strength of 360 MPa and reaches a strain of 38%, which are 89% and 36% higher than those of the natural SF. This study offers a new green strategy for the easy modification to achieve robust composite SF.
研究领域:
材料科学
·
生物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2021
·
IF 8.301
F. Jiang,D. Yan,J. Lin,H. Kong,Q. Yao
Despite that poly (lactic acid) (PLA) has satisfactory biodegradation in vivo, its application in biomedicine is restricted due to its unsatisfactory cytocompatibility. Silk fiber (SF) has outstanding biocompatibility and silk fibroin protein obtained from silk by degumming has good hydrophilicity. Therefore, combining the PLA and silk can improve hydrophilicity of PLA to apply as biomedical materials . In this study, different concentrations of sodium hypochlorite (NaClO) were used to separate the silk to obtain multiscale silk fibers (MSFs), which were implanted into the PLA electrospun fibrous membranes (EFMs). The morphology and structure of silk fibers separated by different concentrations of NaClO were studied by Zetasizer Nano ZS, UV spectroscopy , Fourier transform infrared spectroscopy , X-ray diffraction, and scanning electron microscopy. Moreover, the biocompatibility of the surface-modified PLA composite membranes by MSFs was investigated by cell cultivation and proliferation. The results showed that the surface-modified PLA EFMs through MSF bundles obtained from NaClO split silk exhibited a certain improvement on PLA hydrophilicity and enhancement on cellular compatibility, which could have a broad prospect in the practical application of biomedical materials.
研究领域:
材料科学
·
生物医学工程
·
生物材料
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Yirong Wang,Xin Ai,Shenzhou Lu,Tieling Xing,Ning Qi,Guoqiang Chen
Flexible high-conductivity fibers have attracted much attention due to their great potential in the field of wearable electronic devices. However, how to ensure high conductivity and flexibility is still a challenge. In this paper, the flexible silk fibers were used as the substrate, and manganese oxides were generated on the surface by potassium permanganate treatment. On this basis, the flexible high conductivity silk fibers with a resistivity of 1.47 Ω·cm were prepared by in-situ chemical polymerization of 3,4-ethylenedioxythiophene(EDOT) on the surface of silk fibers. The surface morphology and chemical composition of silk fibers were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma emission spectrometry (ICP). The results confirmed that a large amount of MnO 2 was synthesized and deposited on the surface of the silk fibers. The flexible conductive silk prepared by this method had good temperature sensitivity (- 0.47%/K), good stability and repeatability under cyclic tension, and the relative resistance change rate was 9.1%. Meanwhile, due to the binding force between the surface-active groups of the silk fibers and poly(3,4-ethylenedioxythiophene) (PEDOT), the conductive silk fibers exhibited good stability against water washing, demonstrating a broad application prospects in the field of wearable sensors .
研究领域:
材料科学
·
生物医学工程
·
纺织科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Tonghe Xing,Annan He,Zhiming Du,Yu Zhang,Yuxin Luo,Zhiyu Huang,Mengqi Wang,Zhicheng Shi,Aixin Tong,Sijie Qiao,Xiaohong Liao,Jie Bai,Heng Pan,Zihui Liang,Wei Ke,Hao Yu,Fengxiang Chen
Silk fiber, as a luxurious textile raw material, is widely used in the textile industry due to its excellent mechanical properties and wearing comfort. However, the poor (ultraviolet, UV) light stability of silk affects its further application in high-end textiles, fashionable apparel, and smart materials. Although surface modification can endow the excellent UV resistance of silk fibers, it often reduces its comfort property. Herein, a laminated ultrathin Al2O3/TiO2 coating with a total thickness of 120 nm is fabricated on the surface of silk fiber via a modified atomic layer deposition (ALD) technique. The tenacity of ALD-coated silk can maintain 61.1% of its original value after exposure to intense UV light (640 mW/cm2) under high temperature (>200 °C) for 6 h, which is far superior to other work that has been reported. This can be attributed to the synergistic effect of the reflection of UV light by the multilayer film barrier, the strong oxidizing free radicals by the Al2O3 layer in the innermost layer, and thermal shield of laminated ultrathin Al2O3/TiO2 film. ALD-coated silk fabrics can also demonstrate a multicycle laundering durability, thermal and chemical stabilities, and flame retardancy. More importantly, the wearing comfort of the modified silk has no obvious change. This method provides principle and technical guidance in high-performance and multifunctional fibers and devices.
研究领域:
材料科学
·
纺织工程
·
表面改性技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Huiyu Yang,Zhenwei Yu,Ke Li,Lang Jiang,Xin Liu,Bo Deng,Fengxiang Chen,Weilin Xu
As the most favored high-quality biopolymer, silk fiber is widely used in the textile and medical industries owing to its impressive mechanical properties, wear comfort properties, and biocompatibility. However, its photoinstability, chemical instability, and thermal instability seriously hinder its utilization in luxurious fashionable apparels. Therefore, we herein report the preparation of an ultrathin and uniform TiO2–Al2O3 cloth with a thickness of just six in a thousand of fiber on silkworm silk fiber via atomic layer deposition. In this ultrathin composite cloth, the outer TiO2 layer acts as a sacrificial ultraviolet (UV) absorbent to dissipate large amounts of UV energy. Free radicals and electrons generated by the TiO2 layer are effectively blocked outside the surface of the bulk silk fiber by the inner insulating Al2O3 layer. The excellent UV-resistance of the modified silk fiber was confirmed by a lack of fade in the silk fabric after exposure to UV light for 60 min (equal to continuous exposure to strong sunlight for 3285 days). Compared with silk fiber, the tenacity of the prepared SF-200Al2O3–800TiO2 increased by 18.9% even after sunlight exposure. In addition, both the chemical and thermal stabilities of the modified silk fiber were improved. This technology is expected to have potential applications in various fields, such as high-end fabric development and smart materials, and will further guide material design for future innovations in functional fibers and devices.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2015
·
IF 3.368
Mei Meng,Huawei He,Jing Xiao,Ping Zhao,Jiale Xie,Zhisong Lu
Layer-by-layer (LbL) assembly is a versatile technique for the preparation of multilayered polymeric films . However, fabrication of LbL polymetic film on silk for the in situ growth of high-density silver nanoparticles (AgNPs) has not been realized. Herein poly(acrylic acid) (PAA)/poly(dimethyldiallylammonium chloride) (PDDA) multilayers are constructed on silk via the LbL approach, subsequently serving as a 3-dimensional matrix for in situ synthesis of AgNPs. After 8 rounds of LbL assembly, the silk is fully covered with a layer of polymeric film. AgNPs with good crystalline structures could be in-situ generated in the silk-coated multilayers and their amount could be tailored by adjusting the bilayer numbers. The as-prepared silk could effectively kill the existing bacteria and inhibit the bacterial growth, demonstrating the antimicrobial activity. Moreover, the release of Ag + from the modified silk can last for 120 h, rendering the modified silk sustainable antimicrobial activity. This work may provide a novel method to prepare AgNPs-functionalized antimicrobial silk for potential applications in textile industry.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2014
·
IF 2.354
Zhisong Lu,Mei Meng,Yanke Jiang,Jiale Xie
To overcome the bacteria-caused degradation of silk, an ultraviolet light (UV)-assisted in situ synthesis approach is developed to immobilize silver nanoparticles (AgNPs) on degummed silk fibers for antibacterial applications. Results show that AgNPs with excellent crystalline structures are efficiently attached on the silk surface in an irradiation time-dependent manner. The immobilization of AgNPs could greatly delay the thermal degradation of silk. The antibacterial activity of the AgNPs-coated silk is evaluated by the growth curve of bacteria, zone of inhibition and dual staining assays, clearly demonstrating its bacterial growth inhibition ability and bactericidal effects. This work offers potentials to produce specific AgNPs-coated antimicrobial silk for various applications in textile industry.
研究领域:
材料科学
·
微生物学
·
纺织工程
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2020
·Vol. 32
·期 34
·2002695
·
IF 27.398
Zongpu Xu,Mingrui Wu,Weiwei Gao,Hao Bai
Flexible and transparent substrates play a fundamental role as a mechanical support in advanced electronic devices. However, commonly used polymer films, such as polydimethylsiloxane, show low tear resistance because of their crack sensitivity. Herein, inspired by the excellent mechanical robustness of the skin and its fibrous structure, an epoxy-resin-based composite with a flat silk cocoon as a reinforcing fiber network is fabricated. With only 1 wt% of silk fiber, the tensile strength and modulus of the as-prepared composite film are considerably increased by 300% and 612% compared to those of pure resin, while still maintaining flexibility and transparency. More importantly, the composite shows remarkable tear resistance: without fracture after ≈30 000 tensile cycles. The potential application of such transparent composite films as mechanically robust substrates for flexible electronics is also demonstrated. In addition, this study represents a bioinspired strategy to construct high-performance functional composite materials.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Hui Zhang,Yanyan Zhang,Xinyu Wang,Wei Wang,Zhi Wu,Yan Wu,Yi Sun,Zongqian Wang
As an important biomass resource, chestnut shells are often discarded and wasted. In this study, we report an innovative, low-cost and environmentally friendly approach of dyeing silk fibers with natural pigments extracted from chestnut shells using deep eutectic solvent (DES) and imbuing them with antibacterial and ultraviolet protection properties. To improve the extraction ratio of chestnut shell pigment, DES of choline chloride and urea (ChCl/Urea) with high solubility performance was adopted to extract pigment from chestnut shells and then directly used for silk dyeing. The color spectral curve, washing durability, antibacterial and ultraviolet resistance of dyed silk were tested and compared with the silk dyed by metal salt mordant. The result showed that compared with ethanol extraction, DES extraction method had a higher extraction rate and better stability of the extraction solution. Owing to the swelling, surface modification and high permeability of ChCl/Urea DES to silk fibers, the affinity between the pigment solution and silk fibers was enhanced, and the pigment molecules entered the amorphous area inside the silk fibers, forming a tight bond with the fiber matrix during dyeing. Therefore, the dyed silk fabric has excellent washing durability and soft luster, and the color strength ( K / S ) remained unchanged after three washings. Meanwhile, the antibacterial activity and ultraviolet protection coefficient of silk dyed with chestnut shell pigment reached above 97% and 42.26, respectively, which exhibits excellent antibacterial and ultraviolet protection properties.
研究领域:
材料科学
·
纺织工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
En-Jiang Liu,Bai-Chuan Lu,Run-Ze Hu,Yu-Xiong Ju,Mei-Yuan Liu,Xiao-Hui Yao,Tao Chen,Wei-Guo Zhao,Dong-Yang Zhang,Peng Song
The rapid development of wearable electronic devices has put forward high requirements for their energy storage devices. Currently, fiber supercapacitors have attracted widespread attention owing to their miniature sizes and high flexibility, but an improvement in their electrochemical performance is often limited by the loading of conductive energy storage materials. Herein, a multilayer graphene loading strategy based on amino silver nanowires (NH 2 -AgNWs) was developed to prepare silk electrodes, wherein NH 2 -AgNWs were used as current collectors and binders to increase the conductivity of silk electrodes and achieve multilayer loading graphene on silk. The prepared silk electrode exhibited a high specific capacitance of 37.14 mF/cm because of the multilayer loading of the conductive energy storage material. The generality of this method is further demonstrated with a cotton thread substrate electrode, which exhibited a specific capacitance of 69.45 mF/cm. Additionally, a parallel fiber-shaped supercapacitor (PFSS) was assembled, at the maximum power density of 74.48 mW/m 2 , the energy density reaches 1468.87 mWh/m 2 . The PFSS exhibited a capacitance retention rate of 93.01 % when the bending degree was 90°. This study proposes a multilayer graphene loading strategy based on NH 2 -AgNWs for the preparation of fiber electrodes and a flexible fiber supercapacitor was assembled.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Industrial Textiles
·
2024
·
IF 2.2
Zhendong Zhang,Jing Xiao,Chunyou Wang,Fangmiao Song,Wei Sun,Chenhui Wang,Zhisong Lu,Yan Zhang
Developing green fibrous materials with uniformly distributed metal nanoparticles for highly efficient and recyclable catalysis remains a major challenge. Herein, we developed a simple, effective, and green method to immobilize gold nanoparticles (AuNPs) on polydopamine (PDA)-functionalized silk fibers (SFs) for efficient catalytic reduction of 4-nitrophenol (4-NP). The density and size of AuNPs on the PDA-coated SFs can be tuned by adjusting precursor concentration and synthesis duration, respectively. The AuNPs-PDA-SFs catalysts prepared under optimized conditions could catalyze the reduction of 4-NP, 4-nitroaniline (4-NA), and 4-amino-3-nitrophenol (4-A-3-NP) at the apparent rate constants of 0.087, 0.091, and 0.063 min−1, respectively. After six rounds of flow-through reduction of 4-NP, the AuNPs-PDA-SFs could maintain a 4-NP conversion rate greater than 92%, indicating their superior reusability and consistent catalytic activity. Due to the protein properties of SFs, the AuNPs-PDA-SFs can be degraded by enzymes and alkali solutions. This work may provide new insights for designing advanced fiber-supported recyclable catalysts with high catalytic performance and reusability in wastewater treatment.
研究领域:
材料科学
·
环境科学
·
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）