Effects of crystallization temperature and blend ratio on the crystal structure of poly(butylene adipate) in the poly(butylene adipate)/poly(butylene succinate) blends

被引:10
|
作者
Wang, Hai-jun [1 ]
Feng, Hui-ping [1 ]
Wang, Xue-chuan [1 ]
Guo, Pei-ying [1 ]
Zhao, Ting-shan [1 ]
Ren, Long-fang [1 ]
Qiang, Xi-huai [1 ]
Xiang, Yu-hao [2 ]
Yan, Chao [2 ]
机构
[1] Shaanxi Univ Sci & Technol, Key Lab Chem & Technol Light Chem Ind, Minist Educ, Xian 710021, Peoples R China
[2] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China
基金
中国国家自然科学基金;
关键词
Blends; Crystallization; Poly(butylene adipate); Poly(butylene succinate); FRACTIONATED CRYSTALLIZATION; POLY(VINYLIDENE FLUORIDE); POLYMORPHIC CRYSTALS; POLY(ETHYLENE OXIDE); BANDED SPHERULITES; MORPHOLOGY; KINETICS; ALPHA;
D O I
10.1007/s10118-014-1420-2
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The effects of crystallization temperature and blend ratio on the polymorphic crystal structures of poly(butylene adipate) (PBA) in poly(butylene succinate) (PBS)/poly(butylene adipate) (PBS/PBA) blends were studied by means of differential scanning calorimetry (DSC), wide-angle X-ray diffraction (XRD) and atomic force microscopy (AFM). It was revealed that the polymorphism of PBA can be regulated by the blend ratio even in a non-isothermal crystallization process. The results demonstrate that high temperature favors flat-on alpha crystals, while low temperature contributes to edge-on beta crystals. It was also found that the effect of blend ratio on the crystallization mechanism of PBA is well coincident with that of the crystallization temperature. The increment of PBS content in the PBS/PBA blend gives rise to more beta-form crystals of PBA. For those PBS/PBA blends with low PBA content, the interlamellar phase segregation of PBA makes its molecular chains so difficult to diffuse from one isolated microdomain to another that high crystallization temperature and sufficiently long crystallization time will be required if the PBA alpha-type crystals are targeted.
引用
收藏
页码:488 / 496
页数:9
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