采用溶液铸膜法制备3 μm～30 μm的双酚A聚碳酸酯(BAPC)薄膜.在25 ℃、丙酮气相压力分别为25.0 kPa、26.5 kPa或28.0 kPa下诱导BAPC结晶.实验结果表明:当丙酮气相压力高于25 kPa时,BAPC结晶,且DSC测试谱呈现熔融双峰.随着诱导结晶时间的延长,或诱导压力的增大,晶体逐渐完善,晶粒的平均尺寸增大,结晶度也增大.广角X射线衍射结果证实丙酮气相诱导BAPC结晶得到的晶体是单斜晶系结构.当诱导结晶时间分别为1 h 和56 h时,生成平均尺寸分别约为2 μm和16 μm的球晶.
参考文献
| [1] | Sohn S.;Marand H.;Alizadeh A. .On the multiple melting behavior of bisphenol-A polycarbonate[J].Polymer: The International Journal for the Science and Technology of Polymers,2000(25):8879-8886. |
| [2] | Knauss DM.;Yoon TH.;McGrath JE. .Polycarbonate networks. Part 2. Cure study and determination of mechanical, adhesive, and crystallization properties[J].Polymer: The International Journal for the Science and Technology of Polymers,2002(24):6415-6420. |
| [3] | Hoffman JD.;Miller RL. .KINETICS OF CRYSTALLIZATION FROM THE MELT AND CHAIN FOLDING IN POLYETHYLENE FRACTIONS REVISITED - THEORY AND EXPERIMENT [Review][J].Polymer: The International Journal for the Science and Technology of Polymers,1997(13):3151-3212. |
| [4] | Ogawa T;Masuichi M .[J].Journal of Applied Polymer Science,1997,63:943. |
| [5] | Legras R;Mercier J P .[J].Journal of Polymer Science Part B:Polymer Physics,1979,17:1171. |
| [6] | Von Bonart R .[J].Die Makromolekulare Chemie,1966,92:149. |
| [7] | Park D;Hong J W .[J].Polymer Journal,1997,29(12):970. |
| [8] | Bottenbruch L;Farbenfabriken Bayer A G.Encyclopedia of Polumer Science and Technology Vol. 10 Interscience[M].New York,1969:710. |
| [9] | 胡家璁.高分子X射线衍射学[M].北京:科学出版社,2003:150. |
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