Synthesis , Characterization, and Biocompatibility of the Serinol-modified Polyurethane(Ether-typed)/Multi-walled Carbon Nanotube Composites
碩士 === 國立臺北科技大學 === 有機高分子研究所 === 100 === Polytetramethylene oxide(PTMO) and 4,4’-diphenylmethane diisocyanide(MDI) with different molar ratios were used to synthesizing prepolymers. These products were chain-extended by N-BOC-serinol and 1,4-butanediol(BD) to form the modified polyurethane(PU). Afte...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2012
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| Online Access: | http://ndltd.ncl.edu.tw/handle/34kzxx |
| Summary: | 碩士 === 國立臺北科技大學 === 有機高分子研究所 === 100 === Polytetramethylene oxide(PTMO) and 4,4’-diphenylmethane diisocyanide(MDI) with different molar ratios were used to synthesizing prepolymers. These products were chain-extended by N-BOC-serinol and 1,4-butanediol(BD) to form the modified polyurethane(PU). After the de-protection of BOC group of serinol, modified multi-walled carbon nanotubes (MWNTs) containing COCl groups were added to form chemically bonded composite (MWNTs/PU).
The chemical structures of intermediates and final products were confirmed by the FTIR and NMR methods. Decomposition temperature(5%wt loss) of MWNTs/PU was slightly higher than that of PU. Glass transition temperature and breaking tensile extension of MWNTs/PU were decreased upon increasing carbon nanotube loadings
in composites. Young’s modulus and surface electric resistivity were reduced by increasing carbon nanotubes content in MWNTs/PU.
Blood compatibility were tested with the whole blood clotting test and the blood coagulation methods. The results showed that the anticoagulation ability of MWNTs/PU was better than those of PU and the modified PU’s.
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