| 聚甲基乙撑碳酸酯/淀粉复合材料的形貌、机械性能和热性能研究 |
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| 引用本文： | 杜风光,葛祥才,肖敏,王拴紧,孟跃中.聚甲基乙撑碳酸酯/淀粉复合材料的形貌、机械性能和热性能研究[J].中山大学学报(自然科学版),2009,48(Z2). |
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| 作者姓名： | 杜风光 葛祥才 肖敏 王拴紧 孟跃中 |
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| 作者单位： | 1. 中山大学光电材料及技术国家重点实验室/中山大学环境材料研究所,广东,广州,510275
2. 聊城大学材料科学与工程学院,山东,聊城,252059 |
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| 摘 要： | 采用溶液共混方法制备了聚甲基乙撑碳酸酯(PPC)/淀粉复合材料,并对其形貌、机械性能和热性能进行了表征.复合材料的模量随淀粉含量的增加而提高,拉伸强度在淀粉含量小于35%时有明显提高.复合材料的玻璃化转变温度和5%失重温度分别比纯PPC提高10℃和30℃左右.TEM表明复合材料中PPC基体与淀粉有较好的界面相互作用.GPC表明复合材料中PPC的分子量由于淀粉的架桥作用而显著提高.
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| 关 键 词： | 复合材料 聚碳酸酯 生物降解塑料 形貌 |
Mechanical Properties, Morphology, and Thermal Behavior of Completely Biodegradable Poly(propylene carbonate)/Starch Composites |
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| DU Fengguang,GE Xiangcai,XIAO Min,WANG Shuanjin,MENG Yuezhong.Mechanical Properties, Morphology, and Thermal Behavior of Completely Biodegradable Poly(propylene carbonate)/Starch Composites[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2009,48(Z2). |
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| Authors: | DU Fengguang GE Xiangcai XIAO Min WANG Shuanjin MENG Yuezhong |
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| Abstract: | Completely biodegradable composites of poly (propylene carbonate) (PPC) reinforced with unmodified corn starch were prepared by solution casting method. The effects of reinforcement on the morphology, static and dynamic mechanical properties, as well as thermal properties of PPC/starch composites were investigated. Compared with pure PPC resin, the introduction of starch improved the stiffness of the composites significantly, and enhanced the tensile strength to some extent when the starch content was less than 35% (wB). Scanning electron microscopic (SEM) examination revealed the good intedacial adhesion between the fillers and PPC matrix. Gel permeation chromatography (GPC) results showed that the molecular weights of PPC matrices in composite increased compared with that of pure PPC. Moreover, experimental results indicated that the starch addition leaded to a significant improvement in the ther-mal stability of the composites. |
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| Keywords: | composites polycarbonate biodegradable polymer morphology |
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