Non-isothermal crystallization behaviors and spherulitic morphology of poly(lactic acid) nucleated by a novel nucleating agent

被引：0
作者：
Chenglang Li
Qiang Dou
Zhifei Bai
Quliang Lu
机构：
[1] Nanjing Tech University,College of Materials Science and Engineering
[2] Southeast University,College of Chengxian
来源：
Journal of Thermal Analysis and Calorimetry | 2015年 / 122卷
关键词：
Poly(lactic acid); Nucleating agent; Crystallization; Morphology; Non-isothermal crystallization kinetics;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effect of cadmium phenylmalonate (PMA-Cd) as a novel nucleating agent on the crystallization behaviors and spherulitic morphology of poly(lactic acid) (PLA) as well as non-isothermal crystallization kinetics of the nucleated PLA were studied by means of differential scanning calorimetry and polarized light microscopy. The results showed that PMA-Cd served as an effective nucleating agent to accelerate the crystallization rate of PLA. The presence of PMA-Cd significantly increased the number and decreased the size of the spherulites. The non-isothermal crystallization kinetics of the nucleated PLA was well described by Mo’s model. The activation energies (ΔE) of non-isothermal crystallization were calculated by Kissinger’s method. The crystallization rate of PLA/0.5 % PMA-Cd sample was faster than that of PLA/0.2 % PMA-Cd sample, while the ΔE of the former was greater than that of the latter. The nucleation mechanism between PMA-Cd and PLA was satisfactorily explained by dimensional lattice-matching criterion.
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页码：407 / 417
页数：10
相关论文
共 219 条
[1]  
Drumright RE(2000)Polylactic acid technology Adv Mater 12 1841-1846
[2]  
Gruber PR(2008)Processing technologies for poly(lactic acid) Prog Polym Sci 33 820-852
[3]  
Henton DE(2012)Thermal and mechanical properties of cassava and pineapple flours-filled PLA bio-composites J Therm Anal Calorim 108 1131-1139
[4]  
Lim LT(2015)Non-isothermal cold crystallization kinetics of poly(lactic acid)/poly(butylene adipate-co-terephthalate)/treated calcium carbonate composites J Therm Anal Calorim 119 635-642
[5]  
Auras R(1998)A review of biodegradable polymers: uses, current developments in the synthesis and characterization of biodegradable polyesters, blends of biodegradable polymers and recent advances in biodegradation studies Polym Int 47 89-144
[6]  
Rubino M(2000)Biodegradable polyesters for medical and ecological applications Macromol Rapid Commun 21 117-132
[7]  
Kim KW(2006)Thermal and mechanical characterization of plasticized poly ( J Therm Anal Calorim 86 707-712
[8]  
Lee BH(2013)-lactide-co- J Therm Anal Calorim 112 1171-1177
[9]  
Kim HJ(2007), Polymer 48 6855-6866
[10]  
Sriroth K(2007)-lactide) films for food packaging Polymer 48 401-408
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