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	生物可降解聚丁二酸/甲基丁二酸丁二酯系列共聚物的合成和表征
	孙元碧 ; 徐军 ; 徐永祥 ; 燕立唐 ; 郭宝华 ; SUN Yuan-Bi ; XU Jun ; XU Yong-Xiang ; YAN Li-Tang ; GUO Bao-Hua
	2010-06-10 ; 2010-06-10
关键词	聚丁二酸/甲基丁二酸丁二酯(PBSM) 热学性能 等温结晶动力学 Poly(butylene succinate-co-butylene methyl succinate) Thermal property Isothermal crystallization kinetic O633.1
其他题名	Synthesis and Characterization of Biodegradable Poly(butylene succinate-co-butylene methyl succinate)
中文摘要	合成了一系列聚丁二酸/甲基丁二酸丁二醇共聚酯(PBSM),利用DSC,1H NMR和X射线衍射等方法对共聚物组成、热学性能、结晶性能、等温结晶行为进行了研究.结果表明,引入甲基丁二酸共聚单元较为显著地改变了聚丁二酸丁二酯(PBS)的热学性能,利用Hoffm an-W eeks方程得到的共聚物平衡熔点随共聚物的组分含量增加而降低,玻璃化转变温度亦有所降低,熔点则符合无规共聚物的F lory方程.此外,利用Avram i方程分别研究了均聚物PBS及共聚物PBSM-20的等温结晶行为,结果表明,在所研究的温度范围内,聚酯结晶速率随温度升高而降低,PBS和PBSM-20的Avram i指数分别介于2.8~3.0和2.7~3.0之间,结晶方式为三维生长异相成核,而X射线衍射测试结果表明晶体结构几乎不变.; A series of polyesters PBSM,poly(butylene succinate-co-butylene methyl succinate),were obtained by direct melting polycondensation of succinate and methyl succinic acid with 1,4-butanediol.The compositions and physical properties of the resulted homopolyester and copolyesters were investigated by ~1H NMR,differential scanning calorimetry(DSC)and X-ray diffraction.The results suggest that the introduction of comonomer containing a side-chain methyl group led to a change in thermal properties and crystallization behavior.The DSC analysis indicates that with the increase of comonomer content,the T_g,T_m,T~0_m and crystallinity were decreasing gradually,and the depression of T_m followed Flory′ prediction for random copolymer. Furthermore,an Avrami method was used to analyze the kinetics of isothermal crystallization of PBS and PBSM-20.The Avrami exponents,estimated by Avrami plots,ranging from 2.8 to 3.0 for PBS and 2.7 to 3.0 for PBSM-20 indicate that the mechanism of crystallization for both homopolyester and copolyester was a tridimensional growth with heterogeneous nucleation.Meanwhile,X-ray analysis shows that there was almost no effect of the methyl succinate unit on the crystal structure.; 清华大学基础研究基金(批准号:Jc2003037)资助
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/64358]
专题	清华大学
推荐引用方式 GB/T 7714	孙元碧,徐军,徐永祥,等. 生物可降解聚丁二酸/甲基丁二酸丁二酯系列共聚物的合成和表征[J],2010, 2010.
APA	孙元碧.,徐军.,徐永祥.,燕立唐.,郭宝华.,...&GUO Bao-Hua.(2010).生物可降解聚丁二酸/甲基丁二酸丁二酯系列共聚物的合成和表征..
MLA	孙元碧,et al."生物可降解聚丁二酸/甲基丁二酸丁二酯系列共聚物的合成和表征".(2010).

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