A Study on Functional Properties of PA 6/Nano-Ag Composite Prepared by In-Situ Polymerization
| Autor: | Xin-Ru Zhange, 張心如 |
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| Rok vydání: | 2011 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 99 In this study, the nano-silver solution were added during the process of PA 6 (Polyamide 6, Nylon 6) in situ polymerization to prepare composite with anti-bacteria function. It was in the course of synthesizing ε-caprolactam (CPL) to form PA 6, the nano-silver solution with various ratio were added. Such PA 6/nano-Ag composite were prepared by purification and vacuum drying procedure. The effect on the mechanical, thermal, chemical, physical and anti-bacteria function properties of PA 6/nano-Ag composite with various loading of nano-silver solution were investigated. The technique used in composite preparation taking the PA 6 as the matrix, the nano-Ag as the functional additive, preparing a functional nano composite with impurity, to synthesis different ratio of 0.5, 1.0, 1.5, 2.0, 2.5 wt% addition content composite masterbatch. Properties tests will be divided in to two parts, basic and functional test. Basic tests included mechanical properties of tensile test, thermal properties of thermal gravimetric analysis(TGA) and differential scanning calorimeter(DSC) analysis, physical properties of relative viscometer, scanning electron microscopy(SEM) and energy dispersive spectroscopy(EDS) analysis, chemical properties of Fourier transform infrared spectroscopy. Functional test included AATCC 90 anti-bacteria test. The mechanical properties showed the addition of nano-silver solution will reduce the toughness of composite, as the matter of 2.5wt% addition will reduce maximum loading stress and fracture elongation by 26.38% and 24.17%. At thermal properties part, the reduction of initial decomposition temperature and melting point mach with the downward trend. The physical properties showed the addition of nano-silver solution will reduce the relative viscosity of composite. SEM observations show that the addition will not cause significant surface differences. EDS analysis showed the nano-silver content distributed on the surface evenly. The data of FTIR analysis showed neither new group was made nor phenomenon of displacement was happened as predicted. The anti-bacteria properties can be observed the anti-bacteria function of composite increased with addition of nano-silver solution, it reaches effect of the AATCC100 bacteria-inhibitory standard with 2.0 wt% loaded. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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