本文選題：PDMS薄膜　切入點：金黃色葡萄球菌　出處：《大連海洋大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來,利用有機低表面能材料減少細菌粘附及無機抗菌材料的殺菌作用可協(xié)同提高表面的抗菌和耐沾污性能,已成為抗菌材料研究的重要發(fā)展方向之一。本文選取具有低表面能的PDMS(聚二甲基硅氧烷)作為研究對象,使用三氟乙酸(TFA)、鈦酸四丁酯(TBT)及其復(fù)合體(TFA+TBT)對PDMS進行改性。以金黃色葡萄球菌、大腸桿菌作為供試菌種,對改性后的PDMS薄膜進行抗菌性能檢測,研究其在清水、海水、空氣中等條件下抗菌率的變化,并考察了三種改性薄膜對底棲硅藻附著的抑制作用。結(jié)果表明:PDMS改性薄膜具有較強的抗菌效果,在抗菌薄膜方面具有廣泛的應(yīng)用價值;同時改性薄膜具有一定的防硅藻附著功能,在海洋防污領(lǐng)域具有一定的應(yīng)用前景。具體成果如下:1.三種改性的PDMS薄膜樣品,在聚合初期抗菌率為100%。在空氣中靜置10天,抗菌率依然全部達到99%以上,具有強抗菌性。在海水與清水浸泡10天,抗菌率可以達到90%以上,仍然具有較強的抗菌性。在海水與清水中放置30天,依然保持一定的抗菌性。經(jīng)TBT、(TFA+TBT)改性的PDMS表面產(chǎn)生相分離現(xiàn)象,表面分布有納米Ti O2,紫外照射對改性薄膜的抗菌率有一定提高作用。經(jīng)過紫外照射后的TBT改性PDMS薄膜在空氣,清水以及海水中放置30天后,依然表現(xiàn)出強抗菌性,抗菌率達到99%以上,顯著延長了改性薄膜的抗菌性能時效。經(jīng)紫外照射后的TFA+TBT改性PDMS薄膜在空氣,清水以及海水中放置30天,保持著90%以上的抗菌率。2.三種改性的PDMS薄膜對底棲硅藻的附著都有一定抑制作用,其中TFA改性薄膜的抑制作用最強,薄膜對底棲硅藻的抑制率會隨著TFA含量的增加而增加。含有TBT改性的PDMS薄膜經(jīng)過紫外照射后,對防底棲硅藻的附著性能都有一定程度的提升,特別是TFA+TBT薄膜,抑制率由21.97%提升到36.64%。通過抗菌性能的檢測研究,在較短時間對抗菌材料的性能進行評價,了解其殺菌、抗菌機理,以期縮短抗菌材料的開發(fā)周期,為以后工作提供理論依據(jù)和基礎(chǔ)性資料,同時也有助于新的抗菌材料的開發(fā)。通過對改性PDMS薄膜對防底棲硅藻附著性能研究,探索簡單快速,行之有效的室內(nèi)評價方法,對于將新型防污材料應(yīng)用于海洋防污涂層領(lǐng)域具有指導(dǎo)作用。
[Abstract]:In recent years, the use of organic low surface energy materials to reduce bacterial adhesion and inorganic antibacterial materials can synergistically improve the antibacterial and anti-fouling properties of the surface. In this paper, PDMS (polydimethylsiloxane) with low surface energy is selected as the research object. PDMS was modified by trifluoroacetate (TFA), tetrabutyl titanate (TBT) and its complex. Staphylococcus aureus and Escherichia coli were used to test the antibacterial properties of the modified PDMS film. The effect of three kinds of modified films on the adhesion of benthic diatoms was investigated. The results showed that the modified films had strong antibacterial effect and had wide application value in antibacterial films. At the same time, the modified PDMS film has a certain anti-diatom adhesion function and has a certain application prospect in the field of marine antifouling. The concrete results are as follows: 1.The antibacterial rate of the three modified PDMS films at the initial stage of polymerization is 100g, and the antiseptic rate is 100g in the air for 10 days. The antimicrobial rate is still above 99% and has strong antibacterial activity. After immersion in seawater and water for 10 days, the antimicrobial rate can reach more than 90%, and it still has strong antimicrobial activity. Put in seawater and clear water for 30 days, The surface of PDMS modified by TBT / TBT has phase separation phenomenon, the surface distribution of nano-TiO _ 2, the effect of ultraviolet irradiation on the antibacterial rate of the modified PDMS film is improved, and the PDMS film modified by ultraviolet irradiation is in air. After being placed in water and seawater for 30 days, the antibacterial activity of PDMS film was still strong, and the antibacterial rate was more than 99%, which significantly prolonged the aging of the modified film. The TFA TBT modified PDMS film after ultraviolet irradiation was in air. In water and seawater for 30 days, the antimicrobial rate of above 90% was maintained. The three modified PDMS films could inhibit the adhesion of benthic diatoms to some extent, among which the TFA modified film had the strongest inhibitory effect. The inhibition rate of the film on benthic diatoms would increase with the increase of TFA content. After ultraviolet irradiation, the adhesion of PDMS film modified with TBT to benthic diatoms was improved to some extent, especially the TFA TBT film. The inhibition rate was increased from 21.97% to 36.640.Through the study of antimicrobial properties, the performance of antibacterial materials was evaluated in a short time to understand its bactericidal and antibacterial mechanism, in order to shorten the development period of antimicrobial materials. It provides theoretical basis and basic data for future work, and also contributes to the development of new antimicrobial materials. By studying the adhesion of modified PDMS film to benthic diatoms, a simple, fast and effective indoor evaluation method is explored. It is useful for the application of new antifouling materials in the field of marine antifouling coatings.
【學(xué)位授予單位】：大連海洋大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X55

【參考文獻】

相關(guān)期刊論文 前10條

1 牛梅;劉旭光;邱麗;戴晉明;魏麗喬;許并社;;不同制備工藝對抗菌羊毛纖維抗菌性能的影響[J];北京服裝學(xué)院學(xué)報(自然科學(xué)版);2009年02期

2 柴福莉;王家俊;;殼聚糖和乳清分離蛋白在食品包裝中的應(yīng)用[J];包裝工程;2006年03期

3 王章明;孫偉;田修波;楊士勤;;抗菌表面處理技術(shù)研究進展[J];材料科學(xué)與工程學(xué)報;2006年05期

4 盛杰偵;宋慧君;曹婷婷;;納米銀抗菌針刺鞋材的開發(fā)[J];產(chǎn)業(yè)用紡織品;2010年05期

5 李森;王源升;余紅偉;劉信;;仿生防污技術(shù)的現(xiàn)狀及展望[J];材料開發(fā)與應(yīng)用;2012年06期

6 江日金;黃建華;徐民;;鍍銀纖維多功能屏蔽織物的開發(fā)[J];上海紡織科技;2009年12期

7 陳軍;萬倩華;胡麗華;潘志娟;;靜電紡PA6/Ag復(fù)合纖維氈的制備及其結(jié)構(gòu)與性能[J];絲綢;2010年02期

8 李連春,李光吉,丁銳,趙建青;抗菌功能塑料的制備與性能評價[J];塑料工業(yè);2005年04期

9 師敏,張暉,趙文權(quán);無機納米抗菌飲水桶的研制[J];食品工業(yè);2005年02期

10 劉平,王心晨,付賢智;光催化自清潔陶瓷的制備及其特性[J];無機材料學(xué)報;2000年01期

，

本文編號：1605563