膜科学与技术

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Studies on the preparation and performance ofpolylactic acid/polycaprolactone blending membranes

Authors： Zhao Jing 2，Yang Qing 1,2

Units： 1 College of Material Science and Engineering Donghua University；

KeyWords：聚乳酸；聚己内酯；熔融共混，挤出造粒；浇铸成膜

ClassificationCode：TQ322

year,volume(issue):pagination： 2013,33(4):35-41

Abstract：

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[2] 沈兆宏. 生物降解塑料聚乳酸的结晶改性研究. 浙江工业大学硕士学位论文，2008.
[3] Ramiro D.E, Gabriel G.. Immiscible polymer blends of semicrystalline biocompatible components: thermal properties and PHAe morphology analysis of PLLA/PCL blends. Polymer, 2001; 42(18): 7831-7840.
[4] 王向冰，杨革生，胡学超等. 聚乳酸熔融法纺丝原料选择的研究. 合成纤维，2005；34(11)：1-5.
[5] Qiu Z B, Komura M, Ikehara T, et al. Miscibility and crystallization behavior of biodegrade- able blends of two aliphatic polyesters. Poly(butylene succinate) and poly(ε-caprolactone) [J]. Polymer, 2003;44(25):7749-7756.4

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In order to integrate the performance of polylactic acid and polycaprolactone, the raw materials of PLA and PCL were melt-blended, extruded and granulated, and then solution-casted into blending membranes with different proportion. The performance of the blend membranes samples with different ratios is discussed in detail, and the results of the study indicate that: PLA can be blended with PCL and then solution-casted into membranes in some proportions. And there is no reaction during the blending process concluded from the evidence that there is no new absorption peak in infrared spectrum of these blend membranes. Besides, the DSC traces and the SEM photographs verify that the blend membranes is incompatible systems. In addition, the wettblility of the different blend membranes are all better than that of single material. Furthermore in mechanics performance testing we can see that the defects of the two single materials can be overcome by blending.

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