Thermal, rheological, and mechanical properties of polylactide/poly(diethylene glycol adipate)
Thermal, rheological, and mechanical properties of polylactide/poly(diethylene glycol adipate)
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DOI：
10.1007/s00289-013-1035-8
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发表时间：
2013-12-01
期刊：
影响因子：
3.2
通讯作者：
Zhang, Huixuan
中科院分区：
文献类型：
--
作者：
Liang, Hongyu;Hao, Yanping;Zhang, Huixuan
采用新型生物降解高分子增塑剂聚己二酸二甘醇酯（PDEGA）增塑聚乳酸（PLA）。研究了PLA/PDEGA共混物的结晶行为、相容性、流变行为、力学性能和相行为。PDEGA降低了玻璃化转变温度和冷结晶温度。随着PDEGA含量的增加，复合材料的断裂应变和冲击强度显著增加。70/30 PLA/PDEGA共混物的断裂应变可达480%，冲击强度可达30 kJ/m2。PDEGA均匀分散在PLA基体中。结果表明，PDEGA对聚乳酸具有良好的增塑作用。
Polylactide (PLA) was plasticized with a new biodegradable macromolecular plasticizer-poly(diethylene glycol adipate) (PDEGA). The crystallization behavior, miscibility, rheological behavior, mechanical properties and phase behavior of PLA/PDEGA blends were investigated. The PDEGA lowered the glass transition temperature and the cold crystallization temperature. With an increase of PDEGA content, the break strain and impact strength increased significantly. The high break strain of 480 % and the high impact strength of 30 kJ/m(2) were obtained for 70/30 PLA/PDEGA blend. PDEGA was uniformly dispersed in the PLA matrix. The results indicated that PDEGA had a good plasticizing effect on PLA.