采用表面修饰技术对不同厚度的PEO薄膜进行修饰,通过DSC结晶曲线研究表面修饰PEO薄膜厚度对等温结晶过程的影响.结果发现:表面修饰PEO薄膜厚度小于晶核间的平均距离(≤188μm)时,结晶体的生长方式发生转变,表现在Avrami图形上就是在结晶初期出现了一个转折点,结果表明该转折点是结晶体在生长过程中由三维生长模式向二维生长模式转变的表现.
参考文献
| [1] | 丁明惠,盖登宇,王高升.聚乙二醇改性壳聚糖薄膜结构与性质的研究[J].化学工程师,2007(08):16-18. |
| [2] | Jin Y;Rogunova M;Hiltner A;Baer E;Nowacki R;Galeski A;Piorkowska E .Structure of polypropylene crystallized in confined nanolayers[J].Journal of Polymer Science, Part B. Polymer Physics,2004(18):3380-3396. |
| [3] | 张琰,邵芳可,吴唯,杨武利,府寿宽.PEO-PPO-PEO在生物医用材料方面的研究进展[J].高分子通报,2007(10):34-40. |
| [4] | 汪多仁.聚氧化乙烯的合成与应用[J].上海造纸,2001(01):45-46. |
| [5] | Tol RT;Mathot VBF;Reynaers H;Goderis B;Groeninckx G .Confined crystallization phenomena in immiscible polymer blends with dispersed micro-and nanometer sized PA6 droplets part 4: polymorphous structure and (meta)-stability of PA6 crystals formed in different temperature regions[J].Polymer: The International Journal for the Science and Technology of Polymers,2005(9):2966-2977. |
| [6] | Ryan AJ.;Bras W.;Bates FS.;Hamley IW. .STRUCTURE DEVELOPMENT IN SEMICRYSTALLINE DIBLOCK COPOLYMERS CRYSTALLIZING FROM THE ORDERED MELT[J].Macromolecules,1995(11):3860-3868. |
| [7] | W.Li;Xiaohua Kong;Enle Zhou;Dezhu Ma .Isothermal crystallization kinetics of poly(ethylene terephthalate)-poly(ethylene oxide) segmented copolymer with two crystallizing blocks[J].Polymer: The International Journal for the Science and Technology of Polymers,2005(25):11655-11663. |
| [8] | Jiang S.;Ji X.;An L.;Jiang B.;Yu D. .Confined crystallization behavior of PEO in silica networks[J].Polymer: The International Journal for the Science and Technology of Polymers,2000(6):2041-2046. |
| [9] | 宋正红,张志英,董知之,吴世臻,王曙光,宋娜.表面修饰聚乙二醇粒子的非等温结晶过程[J].材料科学与工程学报,2007(02):258-261,290. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%