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HDPE-g-MAH Modified with Hydroxylated Melamine Derivatives  
HDPE-g-MAH Modified with Hydroxylated Melamine Derivatives
资料类型: PDF文件
关键词: Melamine  derivative  HDPE  Reactive  compounding  
资料大小: 73K
所属学科: 分子表征
来源: 第六届亚欧研讨会上处理和性能增强聚合物会议文集(2013.6.2-6 武汉)
简介:
Thisworkinvestigatesthepossibilityofmodifyingmaleicanhydridegraftedhighdensitypolyethylene(HDPE-g-MAH)withhydroxylatedmelaminederivativesinanattempttointroducereversiblecrosslinkingbehavior.HDPE-g-MAHwascompoundedwithfourmelaminederivatives(loadingrateof5wt%)thathavedifferentnumberofhydroxylgroupsrespectively.SampleswerefirstcharacterizedwithFTIRandtheologyforevidenceofsuccessfulreactivemodification.FTIRanalysissuggeststhatallmelaminederivativesreactedwithHDPE-g-MAH;moreover,comparedtoHDPE-g-MAH,allcompoundspossessasignificantincreaseincomplexviscosity,suggestingtheformationofanetwork.Morecompoundswerepreparedformechanicaltestinganditisfoundthattheygainedimprovementineitherflexuralmodulusorimpactstrength.AlthoughnomarkeddifferenceisseenbetweenthemodifiedpolymersandthevirginHDPE-g-MAHintheirDSCcurves,somecompoundsshowincreasedheatdeflectiontemperature(HDT).Itcanbeconcludedthat,undertheemployedexperimentalconditions,allhydroxylatedmelaminederivativesweresuccessfullygraftedtoHDPE-g-MAH,thereforeinducingpermanentand/orreversiblecrosslinkednetwork.Consequentlythetheologicalandmechanicalpropertiesofthebasepolymerweremodified.
作者: Y. Liu, C. Hahd , R. Dicke, T. Pham
上传时间: 2013-06-28 16:18:20
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