Collaborative Innovation Center for Marine Biomass Fibers

Qingdao, China

Collaborative Innovation Center for Marine Biomass Fibers

Qingdao, China
SEARCH FILTERS
Time filter
Source Type

Fang K.,Qingdao University | Fang K.,Laboratory of Fiber Materials and Modern Textiles of the Growing Base for State Key Laboratory | Fang K.,Collaborative Innovation Center for Marine Biomass Fibers | Zhang L.,Qingdao University | And 5 more authors.
Dyes and Pigments | Year: 2017

Due to the high refrangibility hollow polymer spheres have a strong opacity and covering power. Color hollow copolymer spheres for fiber coloration were prepared by using four commercial disperse dyes with different structures. TEM images show that the hollow size increased from 288.5 nm to 302.5 nm. The conductive titration tests indicate that the hydrophobic disperse dye molecules went into the shell copolymer part in the dyeing process and made the shell more compact and more hydrophobic. The dye content absorbed by the hollow spheres were different with increasing the pH value of the dye-bath from 2 to 12 for anthraquinone and azo disperse dyes. The DLS analysis indicates that the particle size distribution of the spheres dyed at pH 10 was narrower than the original spheres and the spheres dyed at pH 12. Increasing the dye concentration, dyeing temperature and time the dye content increased. © 2016 Elsevier Ltd


Fang K.,Qingdao University | Fang K.,Collaborative Innovation Center for Marine Biomass Fibers | Song T.,Qingdao University | Zhang K.,Qingdao University | And 3 more authors.
Journal of Applied Polymer Science | Year: 2017

Cationic copolymer emulsions of St, BA, AA, and GMA were successfully synthesized via semi-continuous emulsion polymerization. The properties of synthesized cationic emulsions were characterized by monomer conversion and solid content, differential scanning calorimeter, particle size and distribution, zeta potential, and centrifugal stability. The film performance of the cationic emulsions formed on cotton fiber surface was observed by scanning electricity microscopy. The influence of cationic emulsions on the color data, K/S values and rubbing fastness of dyed cotton fabrics was also investigated. The results show that P (St-BA-AA-GMA) emulsion had larger particle size and higher zeta potential than P (St-BA-AA) emulsion. When the films were formed at room temperature, P (St-BA-AA-GMA) emulsion film had better performance than P (St-BA-AA) emulsion film. The addition of GMA monomers improved the film performance. P (St-BA-AA-GMA) emulsion films formed at 120 °C after acetic acid solution treatment had the best water resistance. Dyed cotton fabrics pretreated with P (St-BA-AA-GMA) emulsion had better pigment dyeing performance than those pretreated with P (St-BA-AA) emulsion. It demonstrates that the addition of GMA monomers further improved the effect of pigment dyeing for cotton fabrics with cationic emulsions as binders. With the increase of P (St-BA-AA-GMA) concentration, the color performance of dye fabrics improved while the rubbing fastness decreased a little. But, the handle and fastness still meets the use standards for consumers. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44987. © 2017 Wiley Periodicals, Inc.


Fang K.,Laboratory of Fiber Materials and Modern Textiles | Fang K.,Qingdao University | Fang K.,Collaborative Innovation Center for Marine Biomass Fibers | Zhao H.,Qingdao University | And 5 more authors.
Fibers and Polymers | Year: 2017

Cationic St-BA copolymer nanospheres were prepared through batch cationic emulsion polymerization. The synthesized nanospheres were used to modify cotton fabrics. The modified fabrics were then dyed using an acid dye in the absence of salt. The results show that when the nanosphere concentration was 5 g/l the nanosphere amount on the fibers and the K/S value of dyed fabric reached the maximum value. Prolonging the modification time resulted in increasing of the K/S value until the time was 60 min. Raising the modification temperature from 10 °C to 50 °C led to increasing of the K/S value. The K/S values increased gradually with increasing the modification bath pH value from 2.3 to 9. The addition of sodium chloride in the modification bath resulted in decreasing of the K/S values. CMC pretreatment of the fabric before the nanosphere modification increased the K/S values of dyed fabrics. SEM images revealed that after modification and dyeing many nanospheres deposited on the cotton fiber surfaces and the nanospheres did not form a continuous film on the fiber surface. Therefore, the nanosphere modification and the salt-free dyeing would not obviously affect the permeability and handle of the dyed cotton fabric. © 2017, The Korean Fiber Society and Springer Science+Business Media Dordrecht.


Wang J.,CAS Qingdao Institute of Oceanology | Wang J.,Chinese Academy of Sciences | Wang J.,Collaborative Innovation Center for Marine Biomass Fibers | Liu H.,Nantong University | And 5 more authors.
Marine Drugs | Year: 2014

Diabetic nephropathy (DN) has long been recognized as the leading cause of end-stage renal disease, but the efficacy of available strategies for the prevention of DN remains poor. The aim of this study was to investigate the possible beneficial effects of fucoidan (FPS) in streptozotocin (STZ)-induced diabetes in rats. Wistar rats were made diabetic by injection of STZ after removal of the right kidney. FPS was administered to these diabetic rats for 10 weeks. Body weight, physical activity, renal function, and renal morphometry were measured after 10 weeks of treatment. In the FPS-treated group, the levels of blood glucose, BUN, Ccr and Ucr decreased significantly, and microalbumin, serum insulin and the β2-MG content increased significantly. Moreover, the FPS-treated group showed improvements in renal morphometry. In summary, FPS can ameliorate the metabolic abnormalities of diabetic rats and delay the progression of diabetic renal complications. © 2014 by the authors licensee MDPI.


Liu L.,Collaborative Innovation Center for Marine Biomass Fibers | Liu W.,Qingdao University | Zhao X.,Collaborative Innovation Center for Marine Biomass Fibers | Chen D.,University of Science and Technology of China | And 5 more authors.
ACS Applied Materials and Interfaces | Year: 2014

Radioactive iodine isotopes that are produced in nuclear power plants and used in medical research institutes could be a serious threat to the health of many people if accidentally released to the environment because the thyroid gland can absorb and concentrate them from a liquid. For this reason, uptake of iodide anions was investigated on microrosette-like δBi2O3 (MR-δ-Bi2O3). The MR-δ-Bi2O3 adsorbent showed a very high uptake capacity of 1.44 mmol g-1 by forming insoluble Bi4I2O5 phase. The MR-δ-Bi2O3 also displayed fast uptake kinetics and could be easily separated from a liquid after use because of its novel morphology. In addition, the adsorbent showed excellent selectivity for I- anions in the presence of large concentrations of competitive anions such as Cl- and CO3 2-, and could work in a wide pH range of 4-11. This study led to a new and highly efficient Bi-based adsorbent for iodide capture from solutions. © 2014 American Chemical Society.


Liu S.,Qingdao University | Liu S.-L.,Qingdao University | Long Y.-Z.,Qingdao University | Long Y.-Z.,Key Laboratory of Photonics Materials and Technology in Universities of Shandong | And 9 more authors.
Applied Physics Letters | Year: 2014

Ce-doped p-type ZnO nanofibers were synthesized by electrospinning and followed calcinations. The surface morphology, elementary composition, and crystal structure of the nanofibers were investigated. The field effect curve confirms that the resultant Ce-doped ZnO nanofibers are p-type semiconductor. A p-n heterojunction device consisting of Ce-doped p-type ZnO nanofibers and n-type indium tin oxide (ITO) thin film was fabricated on a piece of quartz substrate. The current-voltage (I-V) characteristic of the p-n heterojunction device shows typical rectifying diode behavior. The turn-on voltage appears at about 7 V under the forward bias and the reverse current is impassable. © 2014 AIP Publishing LLC.


Li J.,Collaborative Innovation Center for Marine Biomass Fibers | Yang D.,Collaborative Innovation Center for Marine Biomass Fibers | Zhu X.,Collaborative Innovation Center for Marine Biomass Fibers | Wang L.,Collaborative Innovation Center for Marine Biomass Fibers | And 2 more authors.
Science of Advanced Materials | Year: 2015

This paper reports the successful facile synthesis and characterization of Sn-doped TiO2(B) nanotubes by heat treatment of Sn2+-doped protonated titanate nanotubes (H2T3O7 NTs) under argon atmosphere. The prepared nanotubes were examined in detail in terms of their structural and morphological properties using various techniques such as X-ray diffraction; scanning electron microscopy and transmission electron microscopy. The detailed characterizations revealed that the prepared materials are nanotubes which are grown in very high density and possessing monoclinic structure. Further, the prepared nanotubes were used as anode material for the fabrication of efficient lithium ion battery. Interestingly, it was observed that, as anode materials for lithium-ion batteries, the prepared Sn-doped TiO2(B) nanotubes (TiO2(B) NTs) exhibited a capacity of 241.6 mAh g-1 after 100 discharge/charge cycles at 0.1 C, and retain 115.9 mAh g-1 after 10 cycles at 2 C. Apparently, the Sn2+ doping is improving the electrical conductivity and interface between electrode and electrolyte, which is highly useful to shorten Li+ transmission distance. The presented work demonstrates that Sn-doped TiO2(B) nanotubes might present themselves as a promising negative electrode material for the fabrication of efficient lithium-ion batteries. © 2015 by American Scientific Publishers.


Zhang S.,Qingdao University | Yang D.,Collaborative Innovation Center for Marine Biomass Fibers | Jing D.,Energy and Environmental Research Center | Liu H.,University of Sydney | And 5 more authors.
Nano Research | Year: 2014

Photodynamic therapy (PDT), which is a procedure that uses photosensitizing drug to apply therapy selectively to target sites, has been proven to be a safe treatment for cancers and conditions that may develop into cancers. Nano-sized TiO2 has been regarded as potential photosensitizer for UV light driven PDT. In this study, four types of TiO2 nanofibers were prepared from proton tri-titanate (H2T3O7) nanofiber. The as-obtained nanofibers were demonstrated as efficient photosensitizers for PDT killing of HeLa cells. MTT assay and flow cytometry (FCM) were carried out to evaluate the biocompatibility, percentage of apoptotic cells, and cell viability. The non-cytotoxicity of the as-prepared TiO2 nanofibers in the absence of UV irradiation has also been demonstrated. Under UV light irradiation, the TiO2 nanofibers, particularly the mixed phase nanofibers, displayed much higher cell-killing efficiency than Pirarubicin (THP), which is a common drug to induce the apoptosis of HeLa cells. We ascribe the high cellkilling efficiency of the mixed phase nanofibers to the bandgap edge match and stable interface between TiO2(B) and anatase phases in a single nanofiber, which can inhibit the recombination of the photogenerated electrons and holes. This promotes the charge separation and transfer processes and can produce more reactive oxygen species (ROS) that are responsible for the killing of HeLa cells.[Figure not available: see fulltext.]. © 2014, Tsinghua University Press and Springer-Verlag Berlin Heidelberg.


Zhang S.,Qingdao University | Yang D.,Collaborative Innovation Center for Marine Biomass Fibers | Jing D.,Xi'an Jiaotong University | Liu H.,University of Sydney | And 5 more authors.
Nano Research | Year: 2014

Photodynamic therapy (PDT), which is a procedure that uses photosensitizing drug to apply therapy selectively to target sites, has been proven to be a safe treatment for cancers and conditions that may develop into cancers. Nano-sized TiO2 has been regarded as potential photosensitizer for UV light driven PDT. In this study, four types of TiO2 nanofibers were prepared from proton tri-titanate (H2T3O7) nanofiber. The as-obtained nanofibers were demonstrated as efficient photosensitizers for PDT killing of HeLa cells. MTT assay and flow cytometry (FCM) were carried out to evaluate the biocompatibility, percentage of apoptotic cells, and cell viability. The non-cytotoxicity of the as-prepared TiO2 nanofibers in the absence of UV irradiation has also been demonstrated. Under UV light irradiation, the TiO2 nanofibers, particularly the mixed phase nanofibers, displayed much higher cell-killing efficiency than Pirarubicin (THP), which is a common drug to induce the apoptosis of HeLa cells. We ascribe the high cellkilling efficiency of the mixed phase nanofibers to the bandgap edge match and stable interface between TiO2(B) and anatase phases in a single nanofiber, which can inhibit the recombination of the photogenerated electrons and holes. This promotes the charge separation and transfer processes and can produce more reactive oxygen species (ROS) that are responsible for the killing of HeLa cells.[Figure not available: see fulltext.] © 2014 Tsinghua University Press and Springer-Verlag Berlin Heidelberg.


Lin D.-P.,Qingdao University | He H.-W.,Qingdao University | Huang Y.-Y.,Qingdao University | Han W.-P.,Qingdao University | And 5 more authors.
Journal of Materials Chemistry C | Year: 2014

We report an effective method to fabricate poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)-polyvinyl pyrrolidone (PEDOT:PSS-PVP) fiber arrays doped with ionic liquid (IL). The twisted microropes were obtained by twisting the electrospun aligned polymer fiber arrays. It was found that the twisted rope exhibited higher electrical conductivity (∼1.8 × 10-4 S cm-1) after IL doping (1.96 wt%) than those without doping (∼0.8 × 10-5 S cm-1), and its conductivity was linearly correlated with strain up to 35% (which is one magnitude larger than previous reports) and showed repeatable cycle loops of tensile-resilience. The extensible rate could reach up to more than 90%, considerably higher than that of ropes without IL doping (∼17%). The results indicate that the twisted PEDOT:PSS-PVP ropes may be used as elastic semiconductors and stretchable sensors. is © the Partner Organisations 2014.

Loading Collaborative Innovation Center for Marine Biomass Fibers collaborators
Loading Collaborative Innovation Center for Marine Biomass Fibers collaborators