Show simple item record

dc.contributor.authorLi, L.zh_CN
dc.contributor.authorFan, X. H.zh_CN
dc.contributor.authorZhao, X. D.zh_CN
dc.contributor.authorZhou, J. L.zh_CN
dc.contributor.authorChen, X. F.zh_CN
dc.contributor.authorWan, X. H.zh_CN
dc.contributor.authorZhou, Q. F.zh_CN
dc.contributor.author李磊zh_CN
dc.date.accessioned2013-12-12T02:03:39Z
dc.date.available2013-12-12T02:03:39Z
dc.date.issued2004zh_CN
dc.identifier.citationChemical Research in Chinese Universities,20(5):652-655zh_CN
dc.identifier.issn1005-9040zh_CN
dc.identifier.otherISI:000224627600031zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/59592
dc.description.abstractA series of polybenzoxazoles(co)polymers bearing crankshaft units in the main chain was synthesized by the conventional solution polycondensation of 4, 6-diaminorescinol dihydrochloride, terephthalic acid (TA) and 2,6-naphthalene dicarboxylic acid(NDA). All of the polymers show lyotropic liquid crystal behavior in polyphosphoric acid(PPA) and methanesulfonic acid(MSA). The polybenzoxazoles exhibit an excellent thermal resistance although the crankshaft monomer has been introduced into the polymer backbone. The temperature for the 5% weight loss of all the polymers is above 600 degreesC. The X-ray diffraction analysis results show that the series of the polymers has a high crystallinity. The introduction of NDA makes a slight decrease in the thermal resistance of the polymers. The maximum absorption peak in the UV-Vis spectra can be adjusted according to the amount of 2,6-naphthalene units in the polymers, which indicates the potential application of the polymers as optoelectric materials.zh_CN
dc.language.isoen_USzh_CN
dc.subjectpolybenzoxazoleszh_CN
dc.subjectcopolymerzh_CN
dc.subjectliquid crystalzh_CN
dc.subjectthermal resistancezh_CN
dc.titlePreparation and characterization of aromatic polybenzoxazoles copolymers containing 2,6-naphthalene unitszh_CN
dc.typeArticlezh_CN


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record