本文選題：聚丙烯腈　切入點：偕胺肟化　出處：《吉林大學》2015年碩士論文　論文類型：學位論文

【摘要】：隨著當今社會的飛速發(fā)展，金屬材料為人類社會帶來便利的同時，也給人類帶來了許多環(huán)境問題，這些問題已經嚴重危害了人們的健康，阻礙了社會的良性發(fā)展，重金屬污染問題已經成為人們不得不面對的一個問題。為了解決重金屬污染問題，人們開發(fā)出了許多材料來去除重金屬，而在眾多材料中，靜電紡絲法所制備的新型吸附材料以其出色的性能受到了廣泛的關注。 聚丙烯腈上存在著大量的氰基，通過與鹽酸羥胺反應之后能形成偕胺肟螯合基團，偕胺肟螯合基團能與重金屬離子在溶液中螯合，通過這個原理，我們結合高壓靜電紡絲法設計了一種能用于重金屬離子吸附的材料，并對其進行了測試和研究，具體內容如下： 1將聚丙烯腈PAN纖維溶于DMF中，加入鹽酸羥胺后對其直接進行了偕胺肟化制備了AOPAN紡絲液，然后利用高壓靜電法制備了AOPAN納米纖維膜，避免了傳統(tǒng)方法中先紡成膜，再在水溶液中偕胺肟化的步驟。然后，我們對其進行了紅外，拉伸，和掃描測試，并利用銅，鉛離子對其吸附性能做了進一步研究。實驗結果表明，在最佳條件下，其對銅，鉛離子的吸附能達到98.4mg/g和119.4mg/g，具有較好的吸附效果。 2為了改善AOPAN納米纖維膜的強度，增強其應用功能，在纖維膜中加入了尼龍PAN66來對其進行改進。首先利用雙噴頭靜電紡絲法制備了PAN聚丙烯腈和尼龍PA66的復合納米纖維膜，然后利用鹽酸羥胺對其進行了偕胺肟化，得到了AOPAN/PA66的復合納米纖維膜。然后，我們對其進行了紅外，拉伸，和掃描等測試，并利用銅，鉛離子對其吸附性能做了研究。實驗發(fā)現(xiàn)，通過尼龍的改性之后，纖維膜不僅具有較好的吸附性能，纖維膜的強度也得到了很大的提高，，提高了其重復利用性，使其具有較好的應用潛力。 3在上一章的基礎上，利用已經紡好的PAN聚丙烯腈和尼龍PA66的復合納米纖維膜，我們在其上面進行了乙二胺接枝胺化，得到了具有氨基的螯合納米纖維，并對其進行了紅外，拉伸，和掃描等測試，并利用鉛離子對其吸附性能做了研究，實驗發(fā)現(xiàn)其在較低pH值下對鉛離子有較好的吸附。
[Abstract]:With the rapid development of today's society, metal materials bring convenience to human society, but also bring many environmental problems to human beings. These problems have seriously harmed people's health and hindered the healthy development of society. Heavy metal pollution has become a problem that people have to face. In order to solve the problem of heavy metal pollution, people have developed a lot of materials to remove heavy metals, and in many materials, The new adsorption materials prepared by electrostatic spinning have attracted wide attention due to their excellent properties. There are a lot of cyanide groups on polyacrylonitrile, which can form amidoxime chelate group after reacting with hydroxylamine hydrochloride, and the amidoxime chelate group can chelate with heavy metal ion in solution. We have designed a kind of material which can be used for heavy metal ion adsorption by high voltage electrostatic spinning method, and have carried on the test and research to it, the concrete content is as follows:. (1) Polyacrylonitrile (PAN) fiber was dissolved in DMF, and hydroxylamine hydrochloride was added to prepare AOPAN spinning solution. Then AOPAN nanofiber membrane was prepared by high voltage electrostatic method. Then we carried out infrared, tensile, and scanning tests on the amidoxime in aqueous solution, and further studied the adsorptive properties of copper and lead ions. The experimental results showed that under the optimum conditions, copper was adsorbed on copper. The adsorption energy of lead ion is 98.4 mg / g and 119.4 mg / g respectively. In order to improve the strength and application function of AOPAN nanofiber membrane, nylon PAN66 was added to the fiber membrane to improve it. Firstly, the composite nano-fiber membrane of PAN polyacrylonitrile and nylon PA66 was prepared by double head electrostatic spinning. Then it was oximized by hydroxylamine hydrochloride, and the composite nanofiber membrane of AOPAN/PA66 was obtained. Then, we tested it by IR, stretching, scanning, and using copper. The adsorbability of lead ion was studied. It was found that through the modification of nylon, the fiber membrane not only had better adsorption performance, but also the strength of fiber membrane was greatly improved and its reusability was improved. It has good application potential. 3 on the basis of the previous chapter, using the composite nanofiber membrane of PAN polyacrylonitrile and nylon PA66, we have grafted ethylenediamine onto it to obtain the chelate nanofibers with amino groups, and carried on the infrared analysis. The sorption properties of lead ions were studied by tensile and scanning tests. It was found that lead ions could be adsorbed at lower pH value.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：O647.33;TB383.1

【參考文獻】

相關期刊論文 前10條

1 李德明;鄭昕;張秀娟;;重金屬對植物生長發(fā)育的影響[J];安徽農業(yè)科學;2009年01期

2 郭軼瓊;宋麗;;重金屬廢水污染及其治理技術進展[J];廣州化工;2010年04期

3 陳程;陳明;;環(huán)境重金屬污染的危害與修復[J];環(huán)境保護;2010年03期

4 雷鳴;田中干也;廖柏寒;鐵柏清;秦普豐;;硫化物沉淀法處理含EDTA的重金屬廢水[J];環(huán)境科學研究;2008年01期

5 鄧繼福，王振中，張友梅，胡覺蓮，鄭云友，夏衛(wèi)生，郭永燦，顏亨梅，賴勤;重金屬污染對土壤動物群落生態(tài)影響的研究[J];環(huán)境科學;1996年02期

6 王磊,范立梅,周琪,張伯生,李宗林,任大明;不同生長期的Pseudomonas putida 5-x細胞對工業(yè)廢水中Cu~(2+)的吸附[J];環(huán)境科學學報;2001年02期

7 吳涓,李清彪;黃孢原毛平革菌吸附鉛離子機理的研究[J];環(huán)境科學學報;2001年03期

8 王秀麗,徐建民,姚槐應,謝正苗;重金屬銅、鋅、鎘、鉛復合污染對土壤環(huán)境微生物群落的影響[J];環(huán)境科學學報;2003年01期

9 許學宏,紀從亮;江蘇蔬菜產地土壤重金屬污染現(xiàn)狀調查與評價[J];農村生態(tài)環(huán)境;2005年01期

10 殷捷,陳玉成;土壤重金屬污染的全過程控制[J];四川環(huán)境;2000年01期

本文編號：1606035