PPC/木纤维复合材料改性剂的制备和表征  

Preparation and Characterization of Modifier of PPC/Wood Composite

作　　者：关丽涛[1] 谭寿再[2] 孔萍[2] 杨崇岭[2] 

机构地区：[1]华南农业大学林学院,广州510640 [2]广东轻工职业技术学院轻化工程系,广州510300

出　　处：《工程塑料应用》2013年第7期88-91,共4页Engineering Plastics Application

基　　金：国家自然科学基金项目(31200439);广东省自然科学基金项目(10451030007004610)

摘　　要：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fFTIR）、核磁共振氢谱（H-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—2870cm^-1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；。H-NMR谱图中d=2．06和d=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。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 crn-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 IH-NMR spectrum, the peak at d=2.06 and d=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.

关 键 词：聚甲基乙撑碳酸酯 聚四氢呋喃醚 嵌段共聚物 

分 类 号：TQ323[化学工程—合成树脂塑料工业]