本研究目的在利用加入聚碳酸酯(Polycarbonate,PC)製成合膠來改善聚乳酸 (Polylatic acid, PLA)的機械和熱學性質。由於PLA和PC的相容性不好，因此進一步在合膠中加入聚丁二酸丁二酯-丙交酯(polybutylene succinate-co-L-lactate, PBSL)來增加合膠相容性。我們首先以塑譜儀將PBSL添加入在PLA中，比例為PLA/PBSL (50/50)，並同時測試添加酚醛環氧樹脂(Phenolic Epoxy)及二異氰酸酯(Methylene Diphenyl Diisocyanate, MDI)作反應性改質的影響，研究結果得知添加Epoxy及MDI後，皆能使PLA與PBSL反應，使合膠黏度提高，其中加入Epoxy的部份能使合膠的分散相粒徑明顯變小。
PLA/PC合膠以雙螺桿押出機進行熔融混練，首先將PLA、PBSL以及Epoxy或MDI由主進料一起加入混煉，並使PBSL添加量為10及20phr，再將PC由側進料加入混煉，製備PLA/PC(50/50)合膠，並進一步測試系統的相容性和機械特性，研究結果得知添加PLA/PC合膠的相容性以及衝擊強度隨著PBSL添加量增加而提升，其中添加20phr PBSL及MDI後，衝擊強度提升最多。

PLA/PC blend has been developed with commercial success as one of the semi-durable applications for the bio-degraqdable polymer. In this study, PBSL (poly (butylene succinate-co-L-lactate)) was used as the toughening agent for the blend. To resolve sever phase separations between PLA and PBSL encountered, phenolic epoxy and diisocyanate were chosen to be the linking agents between the two polymers. Results showed that the impact properties of the blend were largely improved with PBSL added; and the reacting agents further improves the toughness of the systems. Rheological and thermal properties of the systems are also reported.

摘要 I
Abstract II
目錄 III
圖目錄 VII
表目錄 XII
壹、緒論 1
1-1研究背景及動機 1
1-2研究目的 2
貳、文獻與回顧 3
2-1聚乳酸性質與特性 3
2-1-1聚乳酸的簡介 3
2-1-2 聚乳酸的合成 6
2-1-3 聚乳酸的結晶 9
2-1-4 聚乳酸的熱裂解 11
2-1-5 聚乳酸的鏈延長 16
2-2聚碳酸酯 18
2-2-1 聚碳酸酯之合成 18
2-2-2 聚碳酸酯之應用 19
2-3 聚丁二酸丁二酯-丙交酯 20
2-4 聚乳酸與聚碳酸酯合膠 21
2-5 以聚丁二酸丁二醇酯改質聚乳酸及聚碳酸酯 24
2-6高分子流變學 25
參、實驗方法 27
3-1實驗藥品 27
3-2實驗儀器 29
3-3實驗步驟 32
3-3-1塑譜儀熔融混煉製備PLA/PBSL合膠 32
3-3-2-1雙螺桿熔融混煉製備PLA/PC合膠 33
3-3-2-2 射出成型條件 34
3-3-3 DSC測試條件 35
3-3-4 GPC測試方法 35
3-3-5衝擊強度測試條件 36
3-3-6毛細管流變儀實驗條件 36
3-3-7 DMA測試條件 37
3-3-8 XRD測試方法 38
3-3-9 SEM測試條件 38
3-3-10 拉伸測試條件 38
肆、結果與討論之熱裂解行為 39
4-1 純料之熱裂解 39
4-1-1 PLA之熱裂解 39
4-1-2 PLA的擴鏈反應 39
4-1-3 PC之熱裂解 41
4-1-4 PBSL之熱裂解 41
4-2 PLA/PC合膠之熱裂解 42
伍、結果與討論之PLA/PC合膠 45
5-1 相容劑製備 45
5-1-1合膠之熔融混煉 45
5-1-2 DSC分析 46
5-1-2-1 純料之DSC分析 46
5-1-2-2 PLA/PBSL合膠之DSC分析 49
5-1-3 PLA/PBSL合膠的結晶行為 61
5-1-4 流變性質分析 63
5-1-5 微結構分析 66
5-2 以PBSL改質PLA/PC合膠 70
5-2-1 流變性質分析 70
5-2-2 DSC分析 74
5-2-2-1 合膠未添加反應介質之DSC分析 74
5-2-2-2 合膠添加反應介質之DSC分析 76
5-2-3 DMA動態機械性質分析 81
5-2-4 微結構分析 86
5-2-4-1 押出影像 86
5-2-4-2 射出試片影像 90
5-2-4-3 衝擊斷面影像 98
5-2-5 合膠衝擊強度 103
5-2-6 拉伸測試 104
陸、結論 113
柒、參考文獻 115

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