Phase Morphology, Crystallization Behavior and Mechanical Properties of Poly(L-lactide) Toughened with Biodegradable Polyurethane: Effect of Composition and Hard Segment Ratio

被引:7
作者
Qian Xing [1 ,2 ]
Rongbo Li [3 ]
董侠 [2 ]
Xiuqin Zhang [2 ]
Liaoyun Zhang [1 ]
Dujin Wang [2 ]
机构
[1] School of Chemistry and Chemical Engineering, University of Chinese Academy and Sciences
[2] Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences
[3] Petrochina Petrochemical Research Institute
关键词
Poly(L-lactide); Polyurethane; Phase morphology; Impact modification; Hard segment ratio;
D O I
暂无
中图分类号
TQ460.1 [基础理论]; O631 [高分子物理和高分子物理化学];
学科分类号
1007 ; 070305 ; 080501 ; 081704 ;
摘要
Polyester-based biodegradable polyurethane(PU) with different hard segment ratios was selected to modify the impact toughness of poly(L-lactide)(PLLA). The influence of blending composition and hard segment ratio of PU on the phase morphology, crystallization behavior and mechanical properties of PLLA/PU blends has been investigated systematically. The results showed that the PU particles were uniformly dispersed in PLLA matrix at a scale from submicrons to several microns. The glass transition temperature of PU within these blends decreased compared to that of neat PU, but rose slightly with its content and hard segment ratio. The presence of PU retarded the crystallization ability of PLLA, whereas enhanced its elongation at break and impact resistance effectively. As the PU content reaches up to 30 wt%, the phenomenon of brittle-ductile transition occurred, resulting in a rougher fracture surface with the formation of fibril-like structure. Moreover, under the same concentrations, the elongation at break and impact strength of PLLA blends decreased slightly with the increase of hard segment ratio of PU.
引用
收藏
页码:1294 / 1304
页数:11
相关论文
共 19 条
[1]   Thermal,Mechanical and Rheological Properties of Biodegradable Poly(propylene carbonate) and Poly(butylene carbonate) Blends [J].
Dandan Wu ;
Wu Li ;
Yan Zhao ;
Yunjiao Deng ;
张会良 ;
Huixuan Zhang ;
Lisong Dong .
Chinese Journal of Polymer Science, 2015, 33 (03) :444-455
[2]  
Crystalline Morphology and Crystallization Kinetics of Melt-miscible Crystalline/Crystalline Polymer Blends of Poly(vinylidene fluoride) and Poly(butylene succinate-co-24mol% hexamethylene succinate)[J]. Gu-yu Wang,邱兆斌.Chinese Journal of Polymer Science. 2014(09)
[3]   Crystallizability of Poly(ε-caprolactone) Blends with Poly(vinylphenol) under Different Conditions [J].
Tian-bo Yang ;
Xiao-li Sun ;
Zhong-jie Ren ;
李慧慧 ;
Shou-ke Yan .
Chinese Journal of Polymer Science, 2014, 32 (09) :1119-1127
[4]   Thermal, Mechanical and Rheological Properties of Eco-friendly Poly(propylene carbonate)/Poly(1,2-propylene succinate) Blends [J].
Dandan Wu ;
Wu Li ;
Hongyu Liang ;
Sanrong Liu ;
Jianyong Fang ;
张会良 ;
Huixuan Zhang ;
Lisong Dong .
Chinese Journal of Polymer Science, 2014, (07) :914-922
[5]   Toughening of Polycarbonate through Reactive Melt Blending: Effect of Hydroxyl Content and Viscosity of Hydroxyl-terminated Polydimethysiloxane [J].
Shuangmei Zhang ;
Huixian Zhang ;
Weiyi Zhang ;
Zhiqiang Wu ;
Feng Chen ;
傅强 .
Chinese Journal of Polymer Science, 2014, (07) :823-833
[6]   Dynamics of polypropylene chains in their binary blends of different stereochemical sequences studied by Monte Carlo simulations [J].
Pinijmontree, Tanissara ;
Vao-soongnern, Visit .
CHINESE JOURNAL OF POLYMER SCIENCE, 2014, 32 (05) :640-649
[7]   Morphology and performance control of PLLA-based porous membranes by phase separation [J].
Xing, Qian ;
Dong, Xia ;
Li, Rongbo ;
Yang, Hongjun ;
Han, Charles C. ;
Wang, Dujin .
POLYMER, 2013, 54 (21) :5965-5973
[8]  
Multifunctional nanostructured PLA materials for packaging and tissue engineering[J] . I. Armentano,N. Bitinis,E. Fortunati,S. Mattioli,N. Rescignano,R. Verdejo,M.A. Lopez-Manchado,J.M. Kenny.Progress in Polymer Science . 2013
[9]   Poly(lactic acid) crystallization [J].
Saeidlou, Sajjad ;
Huneault, Michel A. ;
Li, Hongbo ;
Park, Chul B. .
PROGRESS IN POLYMER SCIENCE, 2012, 37 (12) :1657-1677
[10]   Structure and Properties of Ultradrawn Polylactide/Thermoplastic Polyurethane Elastomer Blends [J].
Feng, Fei ;
Zhao, Xiaowen ;
Ye, Lin .
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS, 2011, 50 (08) :1500-1507