【作者】 相增辉；

【导师】 戴晋明；

【作者基本信息】 太原理工大学 ， 纺织材料与纺织品设计， 2011， 硕士

【摘要】 健康生活已成为我们生活的一个主题,人们对生存环境的要求日益提高。然而,在我们生活的社会环境中存在着大量的细菌,对我们的健康生活造成了极大的影响或危害。为此,抗菌纤维制品越来越受到人们的青睐。由于无机抗菌剂具有抗菌广谱、持久耐热、不易产生抗药性等优点,而被广泛采用。碳纳米管(CNTs)以其优异的物理和化学性能,被认为是一种性能优良的添加相；聚对苯二甲酸乙二醇酯(PET)是应用最为广泛的合成纤维,因此以CNTs为载体制备载银CNTs抗菌剂,并研究其在PET纤维中的应用具有重要意义。本文以多壁碳纳米管(MWCNTs)为载体,AgNO3溶液为反应液,通过化学吸附的方法制备了载银多壁碳纳米管(Ag/MWCNTs)抗菌剂,主要考察了Ag/MWCNTs抗菌剂的制备工艺,对其结构与性能进行了研究,并采用抑茵环法测定了样品的抗菌性能。以Ag/MWCNTs抗菌剂为功能材料,采用双螺杆挤出机制备了Ag/MWCNTs抗菌PET母粒,并通过熔融共混纺丝.法制成了Ag/MWCNTs抗菌PET纤维,主要研究了抗菌PET纤维的纺丝工艺,以及不同母粒添加量对抗菌PET纤维的可纺性、结构与力学性能的影响,并采用振荡烧瓶法对抗菌PET纤维的抗菌性能进行了测试。Ag/MWCNTs抗菌剂抗菌金属离子的含量通过电感耦合等离子体质谱仪(ICP-MS)进行测定,通过扫描电镜(SEM)观察样品的形貌,高分辨透射电镜(HRTEM)、X射线衍射分析(XRD)、傅里叶变换红外光谱分析(FT-IR)等表征样品的结构,样品的抗菌性能通过抑菌环法和最小抑菌浓度法(MIC)进行测定。通过以上研究,主要得到如下几点结论：1. Ag/MWCNTs抗菌剂的最佳制备工艺为：AgNO3反应液浓度为0.2mol/L,pH值为6-7,温度为65℃,反应时间为5.5h。2.Ag含量为0.68%(wt)的Ag/MWCNTs抗菌剂对大肠杆菌的MIC为30μg/mL,对金黄色葡萄球菌的MIC为15μg/mL。3. Ag/MWCNTs抗菌PET纤维纺丝的最佳制备工艺为：螺杆一区、二区、三区、四区的温度分别为278℃、286℃、290℃、292℃,弯管温度为298℃,箱体温度为305℃,热辊一、热辊二、热辊三的温度分别为90℃、115℃、130℃,熔体温度为293.6℃。Ag/MWCNTs抗菌剂在PET基体中均匀分散,与PET基体有良好的相容性。4. Ag/MWCNTs抗菌PET母粒的添加量为1%(wt)时,抗菌PET纤维的抗菌性能、可纺性、结构与力学性能最好。更多还原

【Abstract】 With more requirements for the surviving environment, how to live a green and healthy life has become a daily issue for us. While, there exist plenty of bacteria in our living social environment, that jeopardizes our healthy life. Taking all above into consideration, the antimicrobial-fiber products increasingly prevail among the people. Given that the inorganic antibacterial agents possess antibacterial spectrum, and that it has many merits such as long-lasting and heat-resistant characteristics, as well it won’t generate the resistance to other components easily, this antibacterial fiber material was put into the widespread use. On account of the CNTs and other brilliant physical and chemical property and function, antimicrobial-fiber is regarded as good additive. PET is the most prevalent synthetic fiber, so we CNTs will be carrier of the Ag/MWCNTs Antibacterial agent. Ag/MWCNTs antibacterial agent and we researched the significance of this fiber’s employment in the PET fiber.In this research, the MWCNTs was used as carrier and AgNO3 solution, the reactive fluid, through the chemical absorption approached to producing the Ag/MWCNTs antbacterial agent. We mianly investigated the method and process of the production of the Ag/MWCNTs antibacterial agent and had the concrete research of the structure and performance of the Ag/MWCNTs, meanwhile we tested the antibacterial performance of some samples by the inhibition zone method. The Ag/MWCNTs was applied as the functional material and we processed the Ag/MWCNTs antibacterial PET masterbatch with the double helix stem extruder. We also produced the Ag/MWCNTs antibacterial PET fibre in the method of melt blending method. The thesis mainly researched the processing method of the antimicrobial PET fiber and possible structural and mechanics influence of the tentative additives, which were the different masterbatches. We examined the PET fiber’s antimicrobial performance in the oscillation flask method.The metal ions in the Ag/MWCNTs antibacterial agent was quantified with the ICP-MS. We observed PET fiber’s appearance and features through SEM, and PET fiber’s sample structure through the HRTEM, XRD and FT-IR. The samples’antibacterial function can be examined in the bacteriostatic annulus method or MIC.According to the above research, we mainly drew several conclusions as below:1 The Ag/MWCNTs antibacterial agent’s most suitable processing method was:reactive fluid density:0.2mol/L, pH value:6-7, temperature:65℃, reactive hours:5.5h.2 Colon bacillus MIC of the Ag/MWCNTs antibacterial agent with 0.68%(wt) Ag was 30ug/ml to E. coli, the MIC of Staphylococcus aureus was 15ug/mL.3 The processing method of the Ag/MWCNTs antibacterial PET fiber was: the temperature of the first, second, third and fourth bacillus area was respectively 278℃,286℃,290℃,292℃, elbow pipe’s temperature was 298℃The temperature of the cabinet temperature was 305℃. The temperature of hot roll 1,2,3 is individually 90℃,115℃130℃. The melt temperature was 293.6℃. The Ag/MWCNTs antibacterial agent dispersed properly in the PET matrix, and PET matrix possessed the beneficial compatibility.4 When the additive weight of the Ag/MWCNTs antibacterial PET fiber reached 1%, the antibacterial PET fiber would take the position of the best antibacterial performance and spinnability, as well as the best structure and mechanics function.更多还原