Preliminary Study of the Application of PET Knitted Fabrics in Artificial Bone Scaffold

2012 ◽  
Vol 184-185 ◽  
pp. 1501-1504 ◽  
Author(s):  
Ching Wen Lou ◽  
Mei Hui Li ◽  
Wen Cheng Chen ◽  
Jin Jia Hu ◽  
Chao Tsang Lu ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Cell Culture ◽  
Mechanical Strength ◽  
Polyethylene Terephthalate ◽  
Cell Attachment ◽  
Bone Scaffold ◽  
Artificial Bone ◽  
Knitted Fabrics ◽  
Preliminary Study ◽  
Plied Yarn

Having good mechanical strength, biocompatibility, and workability, polyethylene terephthalate (PET) is often used as a biomaterial. In this study, PET filaments with various deniers are made into plied yarn with various coefficients of twist. The plied yarn is then made into PET knitted fabrics. Mechanical property tests are performed to determine the differences among the various PET knitted fabrics. Finally, by using cell culture, the PET knitted fabrics are analyzed and evaluated with their cell attachment.

Mechanical and In-Vitro Cell Compatibility Properties of Silk-Elastinlike Protein-Based Biomaterial

2010 ◽  
Author(s):  
Weibing Teng ◽  
Yiding Huang ◽  
Joseph Cappello ◽  
Xiaoyi Wu
Keyword(s):  
Mechanical Property ◽  
Cell Culture ◽  
Mechanical Strength ◽  
Genetically Engineered ◽  
Load Bearing ◽  
Cell Compatibility ◽  
Chemical Treatments ◽  
Good Biocompatibility ◽  
Physical And Chemical

A series of genetically engineered recombinant silk-elastinlike proteins (SELPs) have been produced by combining polypeptide sequences derived from native silk of superior mechanical strength and elastin that is extremely durable and resilient. They have displayed a set of outstanding properties such as good biocompatibility and controllable biodegradation rates. In the study, we characterized the mechanical property of genetically engineered, recombinant silk-elastinlike protein copolymer, SELP-47K, under physical and chemical treatments. The biocompatibility of the SELP-47K was also evaluated by cell culture. The ultimate goal of this study is to explore the potential of SELPs for applications in the engineering of load-bearing tissues such as arteries.

Automated cell counting of astrocytes on patterned substrates containing aliphatic and charged properties

1995 ◽  
Vol 53 ◽  
pp. 974-975
Author(s):  
W. Shain ◽  
H. Ancin ◽  
H.C. Craighead ◽  
M. Isaacson ◽  
L. Kam ◽  
...  
Keyword(s):  
Cell Culture ◽  
Cell Attachment ◽  
Culture Method ◽  
Cell Counting ◽  
Data Sets ◽  
Nuclear Staining ◽  
Double Positive ◽  
A Cell ◽  
Wafer Test ◽  
Cell Densities

Neural protheses have potential to restore nervous system functions lost by trauma or disease. Nanofabrication extends this approach to implants for stimulating and recording from single or small groups of neurons in the spinal cord and brain; however, tissue compatibility is a major limitation to their practical application. We are using a cell culture method for quantitatively measuring cell attachment to surfaces designed for nanofabricated neural prostheses.Silicon wafer test surfaces composed of 50-μm bars separated by aliphatic regions were fabricated using methods similar to a procedure described by Kleinfeld et al. Test surfaces contained either a single or double positive charge/residue. Cyanine dyes (diIC18(3)) stained the background and cell membranes (Fig 1); however, identification of individual cells at higher densities was difficult (Fig 2). Nuclear staining with acriflavine allowed discrimination of individual cells and permitted automated counting of nuclei using 3-D data sets from the confocal microscope (Fig 3). For cell attachment assays, LRM5 5 astroglial cells and astrocytes in primary cell culture were plated at increasing cell densities on test substrates, incubated for 24 hr, fixed, stained, mounted on coverslips, and imaged with a 10x objective.

scholarly journals Preliminary Study on the Utilization of RHA as a Performance Enhancer for Rubber Mortar

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3216
Author(s):  
Jin Li ◽  
Peiyuan Chen ◽  
Haibing Cai ◽  
Ying Xu ◽  
Chunchao Li
Keyword(s):  
Compressive Strength ◽  
Mechanical Strength ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Capillary Absorption ◽  
Optimal Dosage ◽  
Positive Effects ◽  
Waste Rubber ◽  
Chloride Resistance ◽  
Preliminary Study

In this study, rice husk ash (RHA) was explored as a strength enhancer for mortars containing waste rubber. The effects of RHA on the flow, mechanical strength, chloride resistance, and capillary absorption of rubber mortar were investigated by substituting up to 20% cement with RHA. The experimental results showed that the incorporation of rubber into mortar could be safely achieved by adding RHA as a cement substitute by up to 20% without compromising the compressive strength of mortar. Moreover, the RHA also exerted positive effects on the enhancement of the chloride resistance as well as the capillary absorption of rubber mortars, for which 15% RHA was found to be the optimal dosage.

scholarly journals Binding Property Evaluation of Low Melting Point Filaments with Conventional Filaments in Weft-Knitted Fabrics

2018 ◽  
Vol 13 (2) ◽  
pp. 155892501801300
Author(s):  
Qiaoqiao Lin ◽  
Jiali Jiang ◽  
Shuangxi Xu ◽  
Yueping Chen ◽  
Yuanchao Hu ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Melting Point ◽  
Polyethylene Terephthalate ◽  
Treatment Temperature ◽  
Commercial Application ◽  
Binding Property ◽  
Binding Properties ◽  
Knitted Fabrics ◽  
Pet Fabric ◽  
Young’S Moduli

In this paper, low melting point polyamide (LMPA) filaments and low melting point polyethylene terephthalate (LMPET) filaments were blended with conventional filaments, including polyamide (PA), polyethylene terephthalate (PET) and polypropylene (PP), to prepare weft-knitted fabrics. The binding properties of low the melting point filaments in weft-knitted fabrics after heat treatment were investigated by testing mechanical properties and observing the morphology. The effect of heat treatment on the binding properties of the low melting point filaments is discussed. Tensile stress at small deformations and Young's moduli of all fabrics increased and then decreased with increasing heat treatment temperature or time. Thus, an optimal heat treatment process is obtained. LMPA/PA fabric shows better binding properties than LMPET/PET fabric. Both are better than other fabrics considered in this study. This could lead to commercial application of these fabrics.

Anchorage-dependent mammalian cell culture using polyurethane foam as a new substratum for cell attachment

1990 ◽  
Vol 33 (3) ◽  
pp. 287-290 ◽  
Author(s):  
Taku Matsushita ◽  
Masayoshi Ketayama ◽  
Ken-ichi Kamihata ◽  
Kazumori Funatsu
Keyword(s):  
Cell Culture ◽  
Polyurethane Foam ◽  
Mammalian Cell ◽  
Cell Attachment ◽  
Mammalian Cell Culture

Vascular Endothelial and Smooth Muscle Cell Culture on NaOH-Treated Poly(ɛ-caprolactone) Films: A Preliminary Study for Vascular Graft Development

2005 ◽  
Vol 5 (5) ◽  
pp. 415-423 ◽  
Author(s):  
María Concepción Serrano ◽  
María Teresa Portolés ◽  
María Vallet-Regí ◽  
Isabel Izquierdo ◽  
Lorenzo Galletti ◽  
...  
Keyword(s):  
Cell Culture ◽  
Smooth Muscle ◽  
Smooth Muscle Cell ◽  
Muscle Cell ◽  
Vascular Graft ◽  
Vascular Endothelial ◽  
Muscle Cell Culture ◽  
Smooth Muscle Cell Culture ◽  
Preliminary Study

Preliminary Study of Manufacturing Technique Using Three Dimensions Stain Steel Braid for Bone Scaffold

2012 ◽  
Vol 184-185 ◽  
pp. 1424-1427
Author(s):  
Jia Horng Lin ◽  
Ching Wen Lin ◽  
Yueh Sheng Chen ◽  
Chien Lin Huang ◽  
Wen Cheng Chen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Stress Shielding ◽  
Three Dimensions ◽  
304 Stainless Steel ◽  
Shielding Effect ◽  
Metallic Materials ◽  
Bone Scaffold ◽  
Artificial Bone ◽  
Stereo Microscope

Nowadays, as rising research on biomaterials, the artificial bone scaffold has become the most important part of the study. Moreover, metallic materials have been applied on the artificial bone scaffold; but its high rigidity causes the stress shielding effect in bones. To improve the disadvantages of metallic materials and pursue their better mechanical properties, 304 stainless steel fibers have multi-layer braided into the 3D stainless-steel braid with porous structure and better mechanical properties, using braiding machine. In multi-layer braiding process, with the constant number of take-up gear and varying number of braid gear, the 3D stainless-steel braid was manufactured. Afterwards, its braiding structure and angle were observed by stereo microscope. Also, the optimal braiding parameters can be acquired from tensile strength test.

scholarly journals Structural and Mechanical Strength of Proton Radiation Processed Polyethylene Terephthalate

2020 ◽  
Vol 12 (1) ◽  
pp. 83-91
Author(s):  
M. Sahoo ◽  
B. Mallick ◽  
S. Rout ◽  
G. N. Dash
Keyword(s):  
Mechanical Strength ◽  
Polyethylene Terephthalate ◽  
Fibre Axis ◽  
Diffraction Spectrum ◽  
Proton Radiation ◽  
Radiation Processing ◽  
X Ray ◽  
Mesophase Formation ◽  
Extra Peak ◽  
Radiation Induced

The change in structural and mechanical behavior of polyethylene terephthalate (PET) due to 2.4 MeV proton has been studied. Radiation processing of PET polymer is carried out using different low doses such as 0.2, 2.0, and 20 kGy. The Physics of microstrain and radiation-induced mesophase formation are analysed. X-ray investigation indicates that  proton-induced structural modification takes place in the material. Apart from usual diffraction peaks, a low intensity broad peak is observed at small angle of about 2q =10º, when the fibre axis is mounted parallel to the X-ray direction. Such peak is absent in the diffraction spectrum when the fibre axis is mounted perpendicular to the beam direction. The appearance of the extra peak in a particular orientation confirms that, the phase is 2-dimensionally oriented (mesophase). The Young’s modulus (Y) of this irradiated PET sample is found to be more than that of the virgin sample with the highest value recorded for a dose of 2.0 kGy. The decrease in Y for higher dose (20 kGy) may be due to enhanced ion-induced microstrain in the sample, causing degradation in mechanical strength.

Sign in / Sign up

Export Citation Format

Share Document