CAJ | 학술논문

通过缩合聚合制得聚对苯二甲酸丁二酯(PBT)-聚四氢呋喃醚(PTMG)嵌段共聚物，并用傅里叶红外光谱(FTIR)、核磁共振氢谱(1H-NMR)、扫描电子显微镜(SEM)、热分析等方法表征了材料的结构。FTIR测试表明PBT与PTMG发生了共聚反应，其中2950～2870 cm-1处吸收峰的相对强度较PBT中相应的吸收峰增强，说明样品中含有较PBT更多的脂肪族链，主要来自于聚醚组分；1H-NMR谱图中δ=2.06和δ=4.05处出现了明显的吸收峰，证实了合成产物为PBT-PTMG嵌段共聚物；热分析测试表明PTMG聚醚组分的加入降低了PBT的熔点；SEM形貌表明PTMG组分以近似互穿网络的结构均匀分布于PBT基体中。
통과축합취합제득취대분이갑산정이지(PBT)-취사경부남미(PTMG)감단공취물，병용부리협홍외광보(FTIR)、핵자공진경보(1H-NMR)、소묘전자현미경(SEM)、열분석등방법표정료재료적결구。FTIR측시표명PBT여PTMG발생료공취반응，기중2950～2870 cm-1처흡수봉적상대강도교PBT중상응적흡수봉증강，설명양품중함유교PBT경다적지방족련，주요래자우취미조분；1H-NMR보도중δ=2.06화δ=4.05처출현료명현적흡수봉，증실료합성산물위PBT-PTMG감단공취물；열분석측시표명PTMG취미조분적가입강저료PBT적용점；SEM형모표명PTMG조분이근사호천망락적결구균균분포우PBT기체중。
PBT-PTMG blocked copolymer was prepared by the condensation polymerization.FTIR,SEM,DSC/TGA and 1H-NMR were used to characterize the structure of the copolymer.FTIR indicates that PBT copolymerized with PTMG and the absorption peak at 2 950-2 870 cm-1 of the copolymer increases than that of pure PBT,which indicates that the copolymer contains much more aliphatic chain,resulting from the addition of polyether component.In 1H-NMR spectrum,the peak atδ=2.06 andδ=4.05 verify the block copolymerization of PBT and PTMG.DSC/TGA indicates that the addition of polyether decrease the melt point of PBT.SEM reveals that PTMG is dispersed in PBT matrix with interpenetrating network structure.