Structure and mechanical properties of poly(D,L-lactic acid)/poly(ε-caprolactone) blends

被引:326
作者
Broz, ME [1 ]
VanderHart, DL [1 ]
Washburn, NR [1 ]
机构
[1] Natl Inst Stand & Technol, Div Polymers, Gaithersburg, MD 20899 USA
关键词
mechanical properties; microstructure; polycaprolactone; polylactic acid;
D O I
10.1016/S0142-9612(03)00314-4
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
A series of blends of the biodegradable polymers Poly(D,L-lactic acid) and poly(e-caprolactone) were prepared by varying mass fraction across the range of compositions. Tensile testing was performed at room temperature using an extensometer and the elastic modulus was calculated for each blend. The blends were also tested to failure, and the strain-at-failure and yield stress recorded. While the blend has been shown to have a lower critical Solution temperature, the mechanical properties were insensitive to the annealing conditions. Scanning electron microscopy was used to characterize the blend microstructure and poor adhesion was observed at the interface between blend components. Differential scanning calorimetry was performed but the results were somewhat variable, indicating this blend may have complex phase behavior that depends sensitively on the method of preparation. However, nuclear magnetic resonance data indicate the two components are phase separated. A percolation model is used to explain the observed mechanical data and the results are consistent with the predictions of the Kerner-Uemura-Takayangi model. The results of these experiments demonstrate the utility of polymer blending in tuning material properties. Published by Elsevier Science Ltd.
引用
收藏
页码:4181 / 4190
页数:10
相关论文
共 50 条
[31]   Polymer Blends Composed of Poly (D,L-lactic acid)/L-Lactide Copolymers [J].
Oyama, Hideko T. ;
Shida, Shigenari .
KOBUNSHI RONBUNSHU, 2008, 65 (03) :253-262
[32]   Stereocomplex formation in injection-molded poly(L-lactic acid)/poly(D-lactic acid) blends [J].
Srithep, Yottha ;
Pholhan, Dutchanee ;
Turng, Lih-Sheng ;
Akkaprasa, Thiptida .
JOURNAL OF POLYMER ENGINEERING, 2019, 39 (03) :279-286
[33]   Hydrogen bonding assists stereocomplexation in poly(L-lactic acid)/poly(D-lactic acid) racemic blends [J].
Li, Zhaolei ;
Zhang, Meng ;
Fan, Xiao ;
Ye, Xinxin ;
Zeng, Yu ;
Zhou, Haijun ;
Guo, Weijie ;
Ma, Yu ;
Shao, Jun ;
Yan, Chao .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2019, 57 (02) :83-88
[34]   Enhanced crystallization rate and mechanical properties of poly(L-lactic acid) by stereocomplexation with four-armed poly(ε-caprolactone)-block-poly(D-lactic acid)diblock copolymer [J].
Ning, Zhenbo ;
Liu, Junjie ;
Jiang, Ni ;
Gan, Zhihua .
POLYMER INTERNATIONAL, 2017, 66 (06) :968-976
[35]   Effects of Poly(ε-caprolactone) on the Properties of Poly(lactic acid)/Poly(butylene succinate) Blends [J].
Gu T. ;
Zhu D. ;
Zheng Q. ;
Yu J. ;
Lu S. .
Lu, Shengjun (sjlu@gzu.edu.cn), 2018, Sichuan University (34) :42-47
[36]   Comparative studies of mechanical properties of poly(ε-caprolactone) and poly(lactic acid) blends reinforced with natural fibers [J].
Akos, Noel Ibrahim ;
Wahit, Mat Uzir ;
Mohamed, Rahmah ;
Yussuf, Abdirahman Ali .
COMPOSITE INTERFACES, 2013, 20 (07) :459-467
[37]   Structure and mechanical properties of poly(lactic acid) filled with (starch nanocrystal)-graft-poly(ε-caprolactone) [J].
Yu, Jiahui ;
Ai, Fujin ;
Dufresne, Alain ;
Gao, Shanjun ;
Huang, Jin ;
Chang, Peter R. .
MACROMOLECULAR MATERIALS AND ENGINEERING, 2008, 293 (09) :763-770
[38]   Preparation and characterization of polyethylene glycol/poly(L-lactic acid) blends [J].
Athanasoulia, Ioanna-Georgia ;
Tarantili, Petroula A. .
PURE AND APPLIED CHEMISTRY, 2017, 89 (01) :141-152
[39]   Miscibility evaluation of poly(L-lactic acid)/poly(lactic acid-co-lysine) blends [J].
Yao, Junyan ;
Zhang, Shijie ;
Li, Wudan ;
Li, Yujie .
Journal of Applied Biomaterials & Functional Materials, 2016, 14 (03) :E230-E239
[40]   Hydrolytic degradation of poly(l-lactic acid)/poly(methyl methacrylate) blends [J].
Boudaoud, Naila ;
Benali, Samira ;
Mincheva, Rosica ;
Satha, Hamid ;
Raquez, Jean-Marie ;
Dubois, Philippe .
POLYMER INTERNATIONAL, 2018, 67 (10) :1393-1400