【摘要】：聚丙烯腈納米纖維由于具有許多獨(dú)特的性質(zhì)和潛在應(yīng)用價(jià)值,近年來(lái)受到人們的廣泛關(guān)注。但由于通過(guò)靜電紡絲法制備這種納米纖維往往是以纖維氈的狀態(tài)出現(xiàn),而制備出定向性好的納米纖維束一直是人們所追求的。本文旨在制備缺陷較少、纖維直徑較均一、定向性良好的PAN和MWNTs/PAN納米纖維束。 采用過(guò)硫酸銨-N,N,N,N四甲基乙二胺氧化還原體系為引發(fā)劑,通過(guò)水相沉淀聚合法合成了以丙烯腈為第一單體的共聚物,該法適合生產(chǎn)平均分子質(zhì)量較高的聚合物。為提高碳納米管的分散性,通過(guò)原位聚合法合成了MWNTs-PAN共聚物。使用烏氏粘度計(jì)、IR、XRD、DSC等方法對(duì)聚合物進(jìn)行了分析。 以二甲基甲酰胺為溶劑配成紡絲液,靜電紡絲法制備納米纖維。研究制備優(yōu)質(zhì)纖維的紡絲條件與工藝。紡絲過(guò)程采用不同的接收裝置,研究了轉(zhuǎn)盤(pán)接收裝置和轉(zhuǎn)速對(duì)接收定向纖維的作用。實(shí)驗(yàn)過(guò)程中使用SEM和TEM分析方法研究了紡絲過(guò)程中紡絲條件對(duì)纖維直徑形貌等的影響;采用多種手段表征了MWNTs對(duì)聚合物結(jié)構(gòu)、性能、纖維形貌、直徑以及直徑分布的影響。
[Abstract]:Polyacrylic nanofibers have been paid more and more attention in recent years because of their unique properties and potential application values. However, the preparation of this kind of nanofiber by electrospinning often appears in the state of fiber felt, and the preparation of nanofiber bundles with good orientation has always been pursued by people. The purpose of this paper is to prepare PAN and MWNTs/PAN nanofiber bundles with few defects, uniform fiber diameter and good orientation. The polymer with acrylic as the first monomer was synthesized by aqueous precipitation polymerization with ammonium persulfate-N, N-tetramethyl ethylenediamine redox system as initiator. The method is suitable for the production of polymers with higher average molecular weight. In order to improve the dispersion of carbon nanotube (CNT), MWNTs-PAN copolymer was synthesized by in situ polymerization. The polymer was analyzed by Wu's viscometer and IR,XRD,DSC. Nanofibers were prepared by electrospinning with dimethyl formamide as solvent. The spinning conditions and process of preparing high quality fiber were studied. The effect of rotating disk receiving device and rotating speed on receiving directional fiber was studied by using different receiving devices in spinning process. In the course of the experiment, the effects of spinning conditions on the morphology of fiber diameter were studied by SEM and TEM, and the effects of MWNTs on the structure, properties, fiber morphology, diameter and diameter distribution of the polymer were characterized by various means.
【學(xué)位授予單位】：黑龍江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類(lèi)號(hào)】：TQ342.31

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 張壽春,溫月芳,楊永崗,鄭經(jīng)堂,凌立成;衣康酸銨改性對(duì)聚丙烯腈熱性能的影響[J];高分子材料科學(xué)與工程;2004年03期

2 李巖;黃爭(zhēng)鳴;;聚合物的靜電紡絲[J];高分子通報(bào);2006年05期

3 鄭成斐,楊勝林,李光,江建明;碳納米管在聚丙烯腈中的分散狀態(tài)[J];功能高分子學(xué)報(bào);2004年01期

相關(guān)碩士學(xué)位論文 前1條

1 彭寧;電紡聚丙烯腈納米纖維—設(shè)備與性能[D];黑龍江大學(xué);2010年

，

本文編號(hào)：2495327