Influence of low multi-walled carbon nanotubes loadings on the crystallization behavior of biodegradable poly(butylene succinate) nanocomposites
Influence of low multi-walled carbon nanotubes loadings on the crystallization behavior of biodegradable poly(butylene succinate) nanocomposites
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低多壁碳纳米管负载量对可生物降解聚丁二酸丁二醇酯纳米复合材料结晶行为的影响
DOI：
10.1002/pat.1652
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发表时间：
2011-12
影响因子：
3.4
通讯作者：
Qiu Z
中科院分区：
文献类型：
--
作者：
Song L;Qiu Z
采用溶液浇铸法制备了可生物降解的聚丁二酸丁二醇酯（PBSU）/羧基官能化多壁碳纳米管（f-MWNTs）纳米复合材料。扫描和透射电子显微镜观察揭示了f-MWNT在整个PBSU基质中的精细分散。采用各种技术详细研究了纯PBSU及其纳米复合材料在不同冷却速率下的非等温熔融结晶、在不同结晶温度下的等温熔融结晶、球晶形态和晶体结构。发现添加f-MWNTs增强了PBSU的结晶，在非等温和等温熔融结晶过程中，由于异相成核效应，在纳米复合材料中明显地增强了PBSU的结晶;然而，PBSU的结晶机制和晶体结构几乎保持不变。通过两种方法定量评估了f-MWNTs的存在及其负载量对PBSU成核和成核活性的热力学驱动力的影响。此外，发现与纯PBSU相比，掺入1重量%的f-MWNTs在室温下将纳米复合材料中PBSU的储能模量显著提高约147%。版权所有© 2010约翰威利父子有限公司.
Biodegradable poly(butylene succinate) (PBSU)/carboxyl‐functionalized multi‐walled carbon nanotubes (f‐MWNTs) nanocomposites were prepared via solution casting method at low f‐MWNTs loadings of 0.5 and 1 wt%, respectively, in this work. Scanning and transmission electron microscopic observations reveal a fine dispersion of f‐MWNTs throughout the PBSU matrix. Non‐isothermal melt crystallization at different cooling rates, isothermal melt crystallization at different crystallization temperatures, spherulitic morphology, and crystal structure of neat PBSU and its nanocomposites were investigated with various techniques in detail. The addition of f‐MWNTs is found to enhance the crystallization of PBSU, apparently in the nanocomposites during both nonisothermal and isothermal melt crystallization, due to the heterogeneous nucleation effect; however, the crystallization mechanism and crystal structure of PBSU remain almost unchanged. Effect of the presence of f‐MWNTs and their loadings on the thermodynamic driving force for nucleation and nucleation activity of PBSU was evaluated quantitatively through two methods. Moreover, it is found that incorporating with 1 wt% f‐MWNTs significantly improves the storage modulus of PBSU in the nanocomposites by about 147% at room temperature as compared with that of neat PBSU. Copyright © 2010 John Wiley Sons, Ltd.
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影响因子：
--
作者：
S. Ray;S. Vaudreuil;A. Maazouz;M. Bousmina
通讯作者：
S. Ray;S. Vaudreuil;A. Maazouz;M. Bousmina
影响因子：
9.1
作者：
Zhao, Yuanyuan;Qiu, Zhaobin;Yang, Wantai
通讯作者：
Yang, Wantai
影响因子：
5.5
作者：
Haggenmueller, R;Fischer, JE;Winey, KI
通讯作者：
Winey, KI
DOI：
10.1021/jp061628k
发表时间：
2006-06
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
Donghui Zhang;Madhuvanthi A. Kandadai;J. Čech;S. Roth;S. Curran
通讯作者：
Donghui Zhang;Madhuvanthi A. Kandadai;J. Čech;S. Roth;S. Curran
影响因子：
3.5
作者：
DOBREVA, A;GUTZOW, I
通讯作者：
GUTZOW, I