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聚丁二酸丁二酯/纳米二氧化硅共混体系的结晶和动态力学性能研究
引用本文:罗发亮,张秀芹,李荣波,傅东升,甘志华,季君辉,王笃金.聚丁二酸丁二酯/纳米二氧化硅共混体系的结晶和动态力学性能研究[J].高分子学报,2009,0(10):1043-1049.
作者姓名:罗发亮  张秀芹  李荣波  傅东升  甘志华  季君辉  王笃金
作者单位:1. 中国科学院化学研究所工程塑料重点实验室,北京,100190;中国科学院研究生院,北京,100049;宁夏能源化工自治区重点实验室宁夏大学,银川,740002
2. 中国科学院化学研究所工程塑料重点实验室,北京,100190
3. 中国科学院化学研究所工程塑料重点实验室,北京,100190;中国科学院研究生院,北京,100049
4. 中国科学院理化技术研究所,北京,100100
摘    要:用溶液共混法制备了聚丁二酸丁二酯(PBS)/纳米二氧化硅(nano-SiO2)复合材料,并通过DSC、XRD、TEM和DMTA对其结晶、微观结构和动态力学性能进行了研究.DSC与XRD结果表明,在PBS中加入纳米SiO2,提高了PBS的结晶温度,并随着nano-SiO2含量的增加呈正相相关性,从纯PBS的67.7℃提高到含5%nano-SiO2时的73.3℃;在空气淬火条件下,提高了复合材料中PBS的结晶度,在nano-SiO2含量为2%时达到42.4%;TEM照片表明SiO2与基体PBS的界面模糊,表明二者之间具有一定的相互作用;这种相互作用和复合材料结晶性能的变化使PBS/nano-SiO2复合材料的储能模量和损耗因子均高于纯PBS.上述结果表明在PBS中添加适量的nano-SiO2,能显著提高PBS的结晶和动态力学性能.

关 键 词:聚丁二酸丁二酯  纳米二氧化硅  结晶性能  动态力学性能
收稿时间:2009-01-15

INVESTIGATION ON CRYSTALLIZATION AND DYNAMIC MECHANICAL PROPERTIES OF POLY(BUTYLENES SUCCINATE)/nano-SiO_2 COMPOSITES
LUO Faliang,ZHANG Xiuqin,LI Rongbo,FU Dongsheng,GAN Zhihua,JI Junhui,WANG Dujin.INVESTIGATION ON CRYSTALLIZATION AND DYNAMIC MECHANICAL PROPERTIES OF POLY(BUTYLENES SUCCINATE)/nano-SiO_2 COMPOSITES[J].Acta Polymerica Sinica,2009,0(10):1043-1049.
Authors:LUO Faliang  ZHANG Xiuqin  LI Rongbo  FU Dongsheng  GAN Zhihua  JI Junhui  WANG Dujin
Institution:CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, Graduate School of Chinese Academy of Sciences, Beijing 100049, Key Laboratory of Energy &; Resource in Ningxia, Ningxia University, Yinchuan 740002, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190
Abstract:In order to improve the combinatorial performance of poly(butylene succinate)(PBS),including the crystallinity and mechanical performance,PBS/nano-SiO_2 composites were prepared in this study by solution blending methodology.The crystallization behavior,micro-structure and dynamic mechanical performance of the composites were investigated by the combination of DSC,XRD,TEM and DMTA.The DSC results indicated that the onset,peak and end crystallization temperature of PBS were increased from 74.6℃ to 80.2℃,67.7℃ to 73.3℃ and 63.5℃ to 68.7℃,respectively with the increase of nano-SiO_2 content from 0 wt% to 5 wt%.XRD results displayed that the crystal form of PBS in composites was still the α crystal form but the crystallinity of PBS/nano-SiO_2 composites was enhanced.The crystallinity of PBS reached a maximum value of 42.4% when the content of nano-SiO_2 was 2%,and dropped down to 33.0% when the content of nano-SiO_2 was 5 wt%.TEM observations showed that the interface profile between PBS and nano-SiO_2 was not clear-cut,suggesting the existing of interaction between the two components.DMTA analysis indicated that the dynamic mechanical performance of the PBS/nano-SiO_2 composites was higher than that of pure PBS.The storage modulus and the loss factor(tanδ)of the composites were enhanced and reached their maximum values in the case of the 2% nano-SiO_2 composite.The improving of the mechanical performance of PBS/nano-SiO_2 composites is correlated with the variation of crystallization behavior.
Keywords:Poly(butylenes succinate)  Nano-SiO_2  Crystallization property  Dynamic mechanical performance  
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