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題名 | 聚乳酸之結晶行為分析=Crystallization Behavior of PLA |
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作者 | 黃世杰; 芮祥鵬; | 書刊名 | 紡織中心期刊 |
卷期 | 13:4 2003.10[民92.10] |
頁次 | 頁319-325 |
分類號 | 346.84 |
關鍵詞 | 聚乳酸; 結晶行為; 滑石粉; Polylactic acids; Crystallization behavior; Talc; |
語文 | 中文(Chinese) |
中文摘要 | 本實驗主要是利用熱差掃瞄卡量計(DSC)來分析聚乳酸(PLA)在加入不同比例之三滑石粉(TaIc )後之結晶行為。經由Avrami公式分析,吾人得知在加入10%之taIc後,PLA結晶速率驟增3倍,然而至20%滑石粉含量後,結晶速率增加程度趨緩並達飽和。結晶之晶體形狀,也由未加滑石粉前之片狀晶 (n≒2 ),增至加料後之球狀晶 (n≒3 )。然而由融化熱(△H )之結果,吾人可推論加入滑石粉會使總體結晶度會略降10%。且由Tm變化推知,結晶之最小晶體厚度在滑石粉加入後將略為減少。 |
英文摘要 | We employ the differential scanning calorimetry (DSC) to study the crystalli-zation/melting behavior of polylactide acids(PLA) compounded system. Analysis of the crystallization kinetic data using the Avrami equation showed that the addition of talc as a nucleating agent resulted in an increase in crystallization rate for all PLA compounded system. However, a saturation point can be achieved with the addition of 20% talc by weight. Furthermore, the crystal shape was changed from a flake-like(n≒2) to a spherulite structure (n≒3), with the addition of talc. The thermal dada also reveal that the crystallinity and lamellar thickness of PLA will be slightly suppressed as the talc was added in. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。