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Study on Low Softening Point Shape Memory Polymer Material for Medical Fixing

Author: HeDongSheng
Tutor: WenZuoJiang
School: Suzhou University
Course: Materials Science
Keywords: Shape memory polymers Co - mingling associated Medical fixed Low softening point
CLC: R318.08
Type: Master's thesis
Year: 2004
Downloads: 178
Quote: 1
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Abstract


Medical fixing material in the human body non- plastic splint plaster bandages, metal or plastic , the fixing material has its own shortcomings , gypsum weight use dismantling inconvenient , air permeability and water resistance is poor ; not plastic splint is difficult securement body parts , fixed support effects do not work well . In order to overcome the above defects in the main body, the shape memory material developed some medical fixing material in lieu of the above - mentioned materials . However, in this area of research is mainly concentrated in the higher prices TPI, PCL , and shape memory polymer as the main medical fixed materials , and processing complex , higher softening temperature of less than . This thesis to the low price of the ethylene - vinyl acetate and high density polyethylene , a shape memory polymer material as the matrix, and adding a small amount of polycaprolactone of Mixed - linked prepared by a low-softening temperature of the medical fixing material . The blend ratio of its mechanical properties and shape memory properties , caused by the amount of the agent DCP and hot pressing temperature and time ; study of the thermal properties and morphology of the blends . The results can be obtained the following conclusions : 1) assigned to a group of the blend ratio , the DCP content , the thermocompression temperature and time are affecting EVA / HDPE / PCL blend elastic modulus , tensile strength and elongation at break factors ; 2) EVA / HDPE and EVA / HDPE / PCL blends chemical crosslinking , under certain conditions, can present a good shape memory properties ; 3 ) PCL join . increase with DCP, EVA / HDPE / PCL total Mixture of shape fixed rate , reduce its softening temperature ; 4 ) Poor shown scanning calorimetry analysis ( DSC ) , scanning electric microscopy (SEM) and X-ray diffraction analysis of observation results Description : containing 0.5% DCP of the EVA / of HDPE / the PCL . blend medical fixed with shape memory polymer morphology characteristics , have a good shape memory properties and softening temperature can be used as a fixed body of medical . The results of this thesis for the shape memory polymers instead of gypsum as human medical fixed material provides a good theoretical reference value in the future large-scale industrial production .

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CLC: > Medicine, health > Basic Medical > Medical science in general > Biomedical Engineering > General issues > Biomaterial
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