- 學位論文
以原位聚合法製備PA 6/Nano-Ag複合材料之功能性研究
A Study on Functional Properties of PA 6/Nano-Ag Composite Prepared by In-Situ Polymerization
摘要
本研究係探討以原位聚合法聚合PA6(Polyamide6，Nylon6)過程中添加具有抗菌能力的奈米銀水溶液(nano-Ag)來製備PA6/nano-Ag複合材料。實驗係利用己內醯胺(ε-caprolactam，CPL)合成PA6的過程中，將奈米銀水溶液以不同比例加入至CPL並混合均勻，經過聚合、純化、乾燥之程序製得PA6/nano-Ag的複合材料試樣。最後對其機械性質、抗菌性質、熱性質、物理性質及化學性質進行測試，用以評估奈米銀的添加對其材料性能的影響。 本研究所採用的複合材料製備手法，係以PA6為基體、以nano-Ag為功能性添加劑，製備一具備功能性的奈米雜質複合材料，以不同的添加比例0.5、1.0、1.5、2.0、2.5wt%合成出不同含量之複合材料母粒。 性質測試的部分將分為兩部分來討論，基礎性質測試與功能性檢驗。基礎性質測試包含機械性質的拉伸測試、熱性質的熱重分析與示差掃描卡式儀分析、物理性質的相對黏度值測試、掃描式電子顯微鏡與能量分散光譜儀分析、化學性質的傅立葉轉換紅外線光譜儀分析，功能性測試則採用AATCC90的抗菌測試。 機械性質部分發現隨奈米銀添加量之增加將會降低其韌性，在添加2.5wt%狀況下，最大荷重應力與斷裂延伸率分別下降了26.38%與24.17%。熱性質部分可觀察到起始裂解溫度與熔點之下降的趨勢。物理性質部分可觀察到相對黏度值隨著奈米銀添加量之增加而下降；SEM觀測顯示奈米銀的添加並不會造成材料表面顯著的差異；由EDS分析則可觀測到奈米銀的成分均勻的分散在材料的表面。在化學性質的鑑定中，添加奈米銀水溶液的原位聚合過程並不會產生預料外的官能基結構變化，其紅外線光譜特徵峰位置並沒有顯著之改變。功能性抗菌測試部分，可觀察到奈米銀的添加會依比例有效提升複合材料其抗菌能力，添加比例達2.0wt%即符合規範之抗菌功能之效果。
並列摘要
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.