發(fā)布時(shí)間：2018-05-15 17:57

  本文選題：聚酰胺-胺樹(shù)狀大分子 + 納米銀　； 參考：《湖南工業(yè)大學(xué)》2012年碩士論文

【摘要】：本文以丙烯酸甲酯及乙二胺為反應(yīng)物，采用發(fā)散法合成了2.0代及3.0代樹(shù)狀大分子，并以其做為模板，選用硼氫化鈉為還原劑在甲醇溶液中還原硝酸銀制備了納米銀抗菌整理劑。接著利用高碘酸鈉對(duì)純棉纖維進(jìn)行選擇性氧化處理，將所制得的納米銀抗菌劑接枝于純棉纖維來(lái)制備具有抗菌性能的棉纖維，，并通過(guò)抑菌圈實(shí)驗(yàn)及震蕩燒瓶實(shí)驗(yàn)等方式檢測(cè)了棉纖維的抑菌性能。 以丙烯酸甲酯和乙二胺為反應(yīng)物，反復(fù)采用邁克爾加成反應(yīng)和酰胺化反應(yīng)分別合成了0.5代～3.0代聚酰胺-胺樹(shù)狀大分子。通過(guò)單因素控制試驗(yàn)分別確定了制備0.5代和1.0代聚酰胺-胺樹(shù)狀大分子的合成條件分別為：0.5代樹(shù)狀大分子合成條件乙二胺和丙烯酸甲酯的投料比為1/8，反應(yīng)溫度為30℃，反應(yīng)時(shí)間為24小時(shí)；1.0代樹(shù)狀大分子合成條件是0.5代樹(shù)狀大分子與丙烯酸甲酯的投料比為1/14，反應(yīng)溫度為30℃，反應(yīng)時(shí)間為30小時(shí)。 采用所制備的樹(shù)狀大分子做模板，分別討論了聚酰胺-胺樹(shù)狀大分子的代數(shù)、所使用的溶劑、聚酰胺-胺樹(shù)狀大分子與銀鹽的摩爾比以及草酸的加入量對(duì)納米銀粒徑及其分散性的影響，實(shí)現(xiàn)了對(duì)納米銀粒徑的可控制備。 將所制備的納米銀抗菌劑整理于經(jīng)高碘酸鈉選擇性氧化的純棉纖維上，并通過(guò)掃描電鏡觀察了整理前后棉纖維形貌特征。利用不同抑菌劑納米銀濃度及不同納米銀粒徑對(duì)棉纖維進(jìn)行后整理，通過(guò)抑菌圈實(shí)驗(yàn)及震蕩燒瓶實(shí)驗(yàn)對(duì)其抑菌效果及耐洗性能進(jìn)行了探討。結(jié)果表明，經(jīng)7nm的納米銀在濃度為0.8μg/ml時(shí)經(jīng)25次水洗其抑菌率仍高于90%。
[Abstract]:In this paper, 2.0 and 3.0 generation dendritic macromolecules were synthesized with methyl acrylate and ethylenediamine as reactants. Sodium borohydride was used as the template to reduce silver nitrate in methanol solution. After selective oxidation of pure cotton fiber with sodium periodate, the prepared nano-silver antibacterial agent was grafted onto pure cotton fiber to prepare cotton fiber with antibacterial properties. The bacteriostatic properties of cotton fiber were tested by the test of bacteriostasis circle and the experiment of shaking flask. Using methyl acrylate and ethylenediamine as reactants, 0.5-generation polyamide-amine dendrimers were synthesized by Michael addition reaction and amidation reaction respectively. The synthesis conditions of 0.5 and 1.0 generation polyamide-amine dendrimers were determined by single factor control test. The reaction conditions were as follows: the ratio of ethylenediamine to methyl acrylate was 1 / 8, the reaction temperature was 30 鈩

本文編號(hào)：1893339