Advanced Materials Research Vols. 332-334

Abstract: Silkworm BmN4 cells were transfected with the helper plasmid and the piggyBac vector( piggyBac-FLAG) in which was inserted with the spider flagelliform silk expression cassette. Via antibiotic selection, most cells showed stable DsRed-expression. Immuno blot analysis showed that flagelliform silk protein of spider was expressed stably in BmN4 cells. Circular dichroism spectra indicated the existence of β-turn structure in recombinant spider flagelliform protein. The present results suggested that transgenic silkworm directly secreting functional spider silk protein in cocoon by using piggyBac system is feasible.

Abstract: The PVP/Fe3O4 composite nanofibers with different Fe3O4 nanoparticle loading were obtained by electrospinning. The characterization and performance analysis of the composite nanofibers were studied by scanning electron microscopy (SEM), X-Ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and antistatic fabric instrument. The results showed that the average diameter of PVP/Fe3O4 composite nanofibers is smaller than that of pure PVP. At 5wt% Fe3O4 nanoparticle loading, the coefficient of variation CV value was low, while the composite nanofiber diameter distribution was good. Fe3O4 nanoparticles were spherical and had no obvious agglomeration. With increasing Fe3O4 nanoparticle loading, the thermal and antistatic properties of PVP/Fe3O4 composite nanofibers were significantly improved.

Abstract: Content system and characteristics of fabric property is investigated in this paper. The connotation of fabric property is of diversity and colorful. Fabric property has its logical level, which can be primarily classified into basic physical and chemical properties (BPCP) and application derivative properties (ADP). According to experiences and practice that people applied fabric, several common integrated concepts (handle, luster, comfort and function) are set up. Fabric properties manifest in durability, aesthetics, permeability, fabric handle. Fabric property is a generic term of various characteristics and abilities of fabric, which is a kind of external reflections of internal structures of fabric. No matter what fabric it is, it possesses every property in content system. Fabric property depends on material and structure of fabric, and fabric of wool or cotton with plain or satin have differences on individual property. Content system of fabric property has the different measurement requirements to different application fields. The requirement to fabric property on different aspects of the same application is different on level.

Abstract: In response to the relationship between perform structural parameters and the composites properties, a newly geometrical modeling of 2D biaxial orthogonal woven fabric was established in this paper. Based on the yarn’s true configuration, the SEM image of the yarn cross-section was taken, geometrical parameters (the individual tow geometry and weaving pattern of the fabrics) are introduced in order to describe the general families of woven fabrics. The tow waviness can be described by combinations between undulated and straight segments and the tow cross-section can be described by lenticular shape. When the geometrical model was used to predict the structural properties of the fabric, the predicted values show good agreement with the measured ones. The geometrical model proposed here is intended as the foundation for further design and analytical of the mechanical properties of the composite materials reinforced with these fabrics.

Abstract: The wicking properties of porous polyester, Coolmax and conventional polyester rotor yarns were tested with the capillary flow of a colored liquid and the height was recorded against the time. The relations of material structure, temperature, and yarn count factors to wicking properties were discussed. Results showed that: the moisture conduction of porous structure yarns were best of all yarns; Higher temperature results the faster of wicking speed, and is especially for porous polyester; The finer Coolmax and conventional polyester rotor yarns are of faster wicking speed, but this rule is not distinct for porous structure polyester.

Abstract: Though polyester fabric has favorable characteristics, it is not comfortable to wear because of its hydrophobic characteristics Silk fibroin has lots of polar and electric groups, and its biocompatible is very good. In this paper polyester fabric was encased sucrose ester to endue polyester fibers lots of –OH, then sucrose eater glycidyl ether (SEGE) which not only had crosslink function but also had softening function was used to graft silk fibroin on polyester fabric. FT-IR spectra showed silk fibroin was grafted on polyester fabric; DSC showed thermostability of fabric kept very well; X-ray diffraction spectra showed the structure of some silk fibroin grafted on polyester fabric was -sheet. With the increase of grafting rate of silk fibroin on polyester fabric, the broken strength of polyester fabric grafted silk fibroin did not decrease; cockle elastics kept very well; antistatic property and moisture regain increased greatly, whiteness and air permeability kept very well and fabric was still soft enough. The polyester fabric grafted silk fibroin was high functional.

Abstract: Structural connotation of fabric is analyzed from the definition, formation and design of fabric. And structural classification of fabric by systematic method is also provided. Fabric structure is inevitably classified into four aspects, i.e., geometrical structure, compact structure, pore structure and surface structure. The intension system model is established from the structural hiberarchy, geometry and aggregation of composed elements in fabric. And the complexity, changeability and polyaphaism of fabric structure are interpreted from its connotation. It is complexity, variability and polymorphism of fabric structure that lead to the difficult determination of fabric structure. So it is difficult to form fabric design and objective products, which also further stress the importance to study fabric structure by systematic method. All these conclusions can lay a solid foundation for extraction of textile science.

Abstract: The fluid permeability and thermal conductivity of bamboo, cotton and ramie fabrics were measured and analyzed using variance analysis and principal component analysis. After the evaluation of the heat and mass transfer properties of these fabrics, it was found that the bamboo fabric owns the best thermal and moisture performance, in terms of wearing comfort.

Abstract: To analyze the structure and thermo-regulated performance of Outlast viscose fiber, the fiber structure was observed respectively by FTIR spectra, X-ray diffraction and scanning electron microscope, and the thermo-regulated performance was investigated by differential scanning calorimeter, thermal gravimeter analysis and step cooling test. The results indicate that the structure of Outlast viscose fiber is similar to that of normal viscose fiber. Both the melting peak and crystallization peak of Outlast viscose fiber are double peaks, and the phase change temperature range is applicable and the phase change enthalpy is high. The decomposition temperature of Outlast viscose fiber is about 280-320°C. The cooling velocity of Outlast viscose fiber decreases exponentially with the increase in time, and the thermo-regulated ability of Outlast viscose fiber is better than that of normal viscose fiber.

Abstract: In this paper, silk/high-count mixed fabric was explored and developed by product design and performance research. The research showed the arrangement of the proportion of silk and cotton and different fabric weave designs. The data were achieved through the performance tests of all fabrics. And the paper analyzed and studied all the data to find the factors which could effect the characters of the blended fabric. The result showed that The drapability of silk/high count cotton mixed fabric could be closed to that of silk fabric when choosing high count cotton yarn and made pick count under 700 picks/10cm. Fabric anti-pilling tendency will strengthen with the increase of cotton content.