1、紫外光輻照論文：接枝聚合對(duì)聚合物的表面改性與性能表紫外光輻照論文：接枝聚合對(duì)聚合物的表面改性與性能表征【中文摘要】本論文主要研究了紫外光引發(fā)以及低溫等離子體引發(fā)兩種接枝聚合方法對(duì)聚合物的表面改性與性能表征。首先研究了紫外光引發(fā)接枝聚合對(duì)聚合物的表面改性。以二苯甲酮(BP)為光引發(fā)劑在尼龍(NL)無(wú)紡布表面接枝丙烯腈(AN)或丙烯酰胺(AM)單體。利用衰減全反射紅外光譜(ATRFTIR)、掃描電鏡(SEM)分析證明單體已接枝到尼龍無(wú)紡布樣

2、品表面。詳細(xì)研究了接枝反應(yīng)條件對(duì)接枝率的影響規(guī)律。接枝率隨光照時(shí)間的延長(zhǎng)而增大；隨著單體濃度的增大接枝率幾乎呈現(xiàn)出線(xiàn)性增長(zhǎng)的趨勢(shì)；接枝率隨著引發(fā)劑濃度的增加呈現(xiàn)出先增大后減小的趨勢(shì)。研究了接枝率對(duì)溶脹度、染色性能的影響發(fā)現(xiàn)溶脹度和堿性染料上染率都隨著接枝率的增加而增加說(shuō)明接枝后尼龍無(wú)紡布的親水性和可染性都得到提高。提高了接枝后尼龍無(wú)紡布對(duì)Cu2的分離性能。利用熱重分析(TGA)對(duì)接枝樣品的熱穩(wěn)定性能進(jìn)行了表征發(fā)現(xiàn)接枝后尼龍無(wú)紡布的熱穩(wěn)定

3、性降低；接枝樣品的殘?zhí)苛扛哂谖唇又悠返臍執(zhí)苛坎⑶覍?shí)驗(yàn)殘?zhí)苛扛哂诶碚摎執(zhí)苛空f(shuō)明接枝層在受熱過(guò)程中不僅自身參與成炭而且還促進(jìn)了基體聚合物的成炭這與點(diǎn)燃時(shí)間的延長(zhǎng)相互一致表明通過(guò)紫外光引發(fā)接枝聚合的方法可以提高尼龍無(wú)紡布的阻燃性。以二苯甲酮(BP)為光引發(fā)劑在聚對(duì)苯二甲酸乙二醇酯(PET)無(wú)紡布表面接枝丙烯酰胺(AM)單體。利用ATRFTIR分析證明單體已接枝到PET無(wú)紡布irradiationinducedgraftingpolymeri

4、zation.AcrylonitrileacrylaemonomerwasgraftedontothesurfacesofnylonnonwovenbyUVirradiationundertheinitiatofbenzophenoneitwasconfirmedbyATRFTIRSEManalysis.Theinfluenceofgraftingreactionconditiontothegraftingratiowasalsoinv

5、estigated.ThegraftingratioincreasesalongwiththeprolongingofUVirradiationtime.Thegraftingratiowasproptiontotheincreaseofmonomerconcentration.Withtheincreaseofinitiatconcentrationthegraftingratioincreasedfirstthendecreased

6、.Theinfluenceofgraftingratiototheswellingratiodyeabilitywasalsoinvestigated.Theswellingratioincreasessteadilywiththeincreaseofgraftingratio.Thedyeabilityofnylonnonwovenwasimprovedaftergrafting.Theseparationperfmanceofnyl

7、onnonwoventoCu2wasalsoimprovedaftergrafting.ThethermalstabilityofthegraftedsamplewasacterizedbyTGA.Thethermalstabilitydecreasesafternylongraftedwithacrylonitrileacrylae.Theresidueofthegraftedsampleincreasescomparingwitht