中山大学学报（自然科学版）
中山大學學報（自然科學版）
중산대학학보（자연과학판）
ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS SUNYATSENI
2009年
z2期
17-19
,共3页
杜风光%葛祥才%肖敏%王拴紧%孟跃中
杜風光%葛祥纔%肖敏%王拴緊%孟躍中
두풍광%갈상재%초민%왕전긴%맹약중
复合材料%聚碳酸酯%生物降解塑料%形貌
複閤材料%聚碳痠酯%生物降解塑料%形貌
복합재료%취탄산지%생물강해소료%형모
composites%polycarbonate%biodegradable polymer%morphology
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.
採用溶液共混方法製備瞭聚甲基乙撐碳痠酯(PPC)/澱粉複閤材料,併對其形貌、機械性能和熱性能進行瞭錶徵.複閤材料的模量隨澱粉含量的增加而提高,拉伸彊度在澱粉含量小于35%時有明顯提高.複閤材料的玻璃化轉變溫度和5%失重溫度分彆比純PPC提高10℃和30℃左右.TEM錶明複閤材料中PPC基體與澱粉有較好的界麵相互作用.GPC錶明複閤材料中PPC的分子量由于澱粉的架橋作用而顯著提高.
채용용액공혼방법제비료취갑기을탱탄산지(PPC)/정분복합재료,병대기형모、궤계성능화열성능진행료표정.복합재료적모량수정분함량적증가이제고,랍신강도재정분함량소우35%시유명현제고.복합재료적파리화전변온도화5%실중온도분별비순PPC제고10℃화30℃좌우.TEM표명복합재료중PPC기체여정분유교호적계면상호작용.GPC표명복합재료중PPC적분자량유우정분적가교작용이현저제고.
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.
