生物可分解性聚琥珀酸丁酯/多壁奈米碳管&聚琥珀酸丁酯/聚乳酸掺合體之結晶行為及物性探討複合材料

Study of Crystallization Behavior and Physical Properties of PBS/MWNT & PBS/PLA Composites

高伯爵(Bo-Jiue Kao)

指導教授 ： 程耀毅

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2010年)

摘要

本實驗利用有機環保高分子生物可分解聚琥珀酸丁酯Poly(butylene succinate) (PBS)/多壁奈米碳管Multi-walled carbon nanotubes (MWNTs)奈米複合材料和PBS/聚乳酸Poly (lactic acid) ( PLA) 由熔融混煉備製而成。以DSC,SEM,POM和WXRD研究非恆溫結晶，熔融行為，恆溫結晶動力學，晶球型態和結晶結構。MWNTs的存在有異質成核的效應，在PBS的結晶和型態學導致複材在非恆溫和恆溫結晶的期間結晶速率提升。在複材中PBS的結晶結構沒有因為添加MWNTs而改變，但是添加PLA的複材中有出現PLA的特徵峰。TGA的結果殘餘量和重量損失溫度隨著MWNTs和PLA增加而改善。

關鍵字

聚琥珀酸丁酯(PBS) ； 多壁奈米碳管(MWNT) ； 聚乳酸(PLA) ； 等溫結晶動力學

並列摘要

In this study, organic environmental polymer biodegradable Poly(butylene succinate) (PBS)/ multi-walled carbon nanotubes (MWNTs) nanocomposite and (PBS)/ Poly (lactic acid) (PLA) composite were prepared by melt compounding. Nonisothermal crystallization and subsequent melting behavior, isothermal crystallization kinetics, spherulitic morphology, and crystal structure of neat PBS and its nanocomposite were studied by differential scanning calorimetry (DSC), scanning electron microscopy(SEM), polarizing optical microscope(POM) and wide angle X-ray diffraction. The presence of MWNTs has a significant heterogeneous nucleation effect on the crystallization and morphology of PBS, and therefore the crystallization rate is enhanced during both nonisothermal and isothermal crystallization in the nanocomposite. Moreover, the crystal structure of PBS is not affected by MWNTs. Thermal gravimetric (TGA) result shows that the residue and weight loss temperature are improved with the increase of MWNTs and PLA

並列關鍵字

PBS ； MWNT ； PLA ； Isothermal Crystallization Kinetics

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