表面负载聚苯胺纳米线聚合物复合微球的制备及其防腐性能研究

采用分散聚合和\"受限聚合-原位生长\"法分别制备了聚甲基丙烯酸缩水甘油酯(PGMA)微球和PGMA@PANI(聚苯胺)复合微球,通过改变聚乙烯基吡咯烷酮(PVP)含量以及甲基丙烯酸缩水甘油酯(GMA)浓度实现对PGMA微球粒径和分散度的调控。在此基础上,通过改变苯胺(An)/PGMA、CTAB/An的比例、正戊醇的添加来调控PGMA@PANI复合微球的形貌。结果表明,在0.10g/mL GMA、10%(wt,质量分数,下同)PVP、50%十六烷基三甲基溴化铵(CTAB)和30%An条件下,可得到均匀负载PANI纳米线的聚合物复合微球。以复合微球为防腐助剂制备环氧型防腐涂料的测试结果显示:PGMA@PANI复合微球的添加量为4.5%时,防腐涂层耐盐雾时间为816h,耐盐水时间为960h,展现了较好的防腐性能和机械性能。福建省科技创新平台(2014H2006,2014I2005);;\n厦门市科技重大专项(3502Z20171002);;\n石墨烯技术研发和产业发展专项项目;;\n福建省科技重大专项(2018HZ0001-1

Transition Metal Promoted ZSM-5 Catalysts for the Conversion of Dimethyl Sulfide into Methanethiol

负载过渡金属的zSM-5催化剂用于催化甲硫醚(dMS)转化成甲硫醇(MT)的反应.实验结果表明,催化剂的甲硫醚转化率提高和甲硫醇选择性降低的趋势一样,都是以下顺序:CO/zSM-5>MO/zSM-5>nI/zSM-5>W/zSM-5.表征结果表明,由于过渡金属阳离子(W6+、nI2+、CO3+、MO6+)比Al3+活泼,而改性过程中W6+、nI2+、CO3+、MO6+分别代替了部分Al3+,使得改性催化剂对dMS和MT的化学吸附作用更强.过渡金属的引入使得zSM-5总酸度增强,提高了C―S键的裂解能力,从而改进了催化转化dMS的能力.研究结果发现,在转化dMS的过程中,金属活性位和酸性位之间通过强的协同效应起作用.ZSM-5-supported transition metal catalysts were prepared and used to catalyze the conversion of dimethyl sulfide(DMS) into methanethiol(MT).Test results indicated that the activities of the catalysts for the conversion of DMS increased as follows: Co/ZSM-5>Mo/ZSM-5>Ni/ZSM-5>W/ZSM-5.The decrease in MT selectivity followed the same trend.The characterization results showed that transition metal cations(W6 +, Ni2 +, Co3 +, Mo6 +) replaced some Al3 +sites leading to more active in chemiadsorption of DMS and MT since transition metal cations are more active than Al3 +.The incorporation of transition metals into ZSM-5enhances the total acidity of ZSM-5 and increases its capacity to rupture C―S bonds.This subsequently improves its catalytic behavior in the conversion of DMS.We found that the metal active sites and closely situated acidic sites have a strong synergistic effect when converting DMS

辦公室自動化對員工態度與行為之影響

論文摘要一篇論文的完成，豈是作者一人的心力？要感謝的人實在太多……，謹此表達由衷的感激與謝意，尤其是家母及內人少玲之支柱與鼓勵，使我得以順利完成學業，唯本文乃國內對OA的影響進行實證研究的初啼之作，掛一漏萬之處自多，尚祈先進、師長不吝斧正。　　本文探討辦公室自動化（OA）對員工所產生的影響，經由主意抽樣共選出十四個已進行OA之政府機關，對其OA設備使用者進行問卷測試，將其結果進行統計分析，結果發現：一、 一般員工對於政府機關引進OA後的反映情形良好，但大部分（約78%）認為操作OA設備有損其視力。二、 受試者之個人背景特性（年齡、學歷、性別、服務年資、工作性質、電腦訓練）的不同，對OA態度有顯著性的差異存在。三、 員工之專斷性格的傾向愈高，對OA的抗拒現象愈高

The Study of Constructing Micro/Nano-bioactive Structure on Titanium Implant Surface

经喷砂的钛基体在H2SO4和HCl混合溶液中进行酸蚀,随后在Hf溶液中恒电压下进行阳极氧化,构筑具有多级微/纳米复合结构膜层,并对不同表面处理样品进行体外实验,观察其生物活性.利用扫描电子显微镜(SEM)、能谱色散仪(EdS)及X射线衍射仪(Xrd)表征其表面形貌、化学组成及晶型.结果表明,采用喷砂酸蚀,钛表面形成10~20μM喷砂凹陷及5~8μM酸蚀坑构成两级微米级结构,阳极氧化构造出10nM左右的纳米级第3级结构.体外实验显示,多级微/纳米复合结构样品相对于对照组具有更好的生物活性.通过表面多级结构的构筑及热处理,钛种植体的亲水性和生物活性均有较大幅度的提高.Multi-level micro/nano-structure on titanium surface was constructed by Al2O3 sandblasting and acid etching in H2SO4 and HCl solution,and then anodizing in HF solution at a constant potential.The biological activities of different treated titanium samples were observed in vitro experiments.Scanning electron microscopy(SEM),energy disperse spectroscopy(EDS)and X-ray diffraction(XRD)were employed to characterize the morphology,composition,and crystalline phase of the different treated titanium samples.The results showed a multi-level micro/nano-composite structure consisting of hollows of 10-20μm diameter by sandblast,pits of 5-8μm diameter by acid etching,and nanotexture of 10 nm diameter by anodizing.The results of vitro experiments showed that the multi-level micro/nano-composite structure had a higher biological activity than the control group.After modification and heating treatment of the surface,the sample with the multi-level micro/nano-composite structure showed excellent hydrophilic property and increased biological activity.福建省经贸委企业技术创新基