以分别具有端羟基、端十六烷基和端苯基的超支化聚酯(HBP)对聚对苯二甲酸乙二醇酯(PET)进行共混改性,研究了HBP的端基类型和用量对HBP/PET复合材料拉伸强度、冲击强度、结晶性能及动态黏弹性的影响.结果表明:当端苯基超支化聚酯(HBP-Bz)、端十六烷基超支化聚酯(HBP-C16)和端羟基超支化聚酯(HBP-OH)的质量分数分别为0.1％、0.4％和0.2％时,HBP/PET复合材料的拉伸强度和冲击强度均达到最大值;3种超支化聚酯在其质量分数为0.1％～0.4％的范围内,复合材料的结晶度都得到了提高,与HBP-C16和HBP-OH相比,H BP-Bz的加入明显加快了PET的结晶速率;低用量(0.1wt％～0.4wt％)的HBP在PET共混改性中起到了增黏的效果,HBP/PET复合材料熔体表现出假塑性流体的流变行为,HBP的加入在一定程度上增加了PET大分子的链缠结和物理交联点,从而使HBP/PET复合材料的拉伸强度、冲击强度以及熔体黏度均得到提高.
参考文献
| [1] | Yu Y;Bu H.Crystallization behavior of poly (ethylene terephthalate) modified by ionomers[J].Macromolecular Chemistry and Physics,2001202(03):421-425. |
| [2] | Yu Y;Yu Y;Jin M.The influence of aliphatie low molar mass polyesters on crystallization of poly (ethylene terephthalate)[J].Macromolecular Chemistry and Physics,2001202(01):139-144. |
| [3] | 陈俊;陈剑玲;刘正英.PET结晶行为研究进展[J].高分子通报,2005(01):20-24. |
| [4] | Tzavalas S;Drakonakis V;Mouzakis D E.Effect of carboxy-functionalized multiwall nanotubes (MWNT-COOH) on the crystallization and chain conformations of poly (ethylene terephthalate) PET in PET-MWNT nanocomposites[J].Macromolecules,200639(26):9150-9156. |
| [5] | Lee J K;Im J E;Park J H.Morphology development and crystallization behavior of a poly (ethylene terephthalate)/polycarbonate blend[J].Journal of Applied Polymer Science,200699(05):2220-2225. |
| [6] | Chung J W;Son S B;Chun S W.Nonisothermal crystallization behavior of exfoliated poly (ethylene terephthalate)-layered silicate nanocomposites in the presence and absence of organic modifier[J].Journal of Polymer Science Part B:Polymer Physics,200846(11):989-999. |
| [7] | Tang S D;Xin Z.Structural effects of ionomers on the morphology,isothermal crystallization kinetics and melting behaviors of PET/ionomers[J].Polymer,200950(04):1054-1061. |
| [8] | Antoniadis G;Paraskevopoulos K M;Bikiaris D.Non-isothermal crystallization kinetic of poly (ethylene terephthalate)/fumed silica (PET/SiO2) prepared by in situ polymerization[J].Thermochimica Acta,2010510(1-2):103-112. |
| [9] | Kim Y H.Hyperbranched polymers 10 years after[J].Journal of Polymer Science Part A:Polymer Chemistry,199836(11):1685-1689. |
| [10] | Jang J;Oh J H;Moon S I.Crystalization behavior of poly (ethylene terephthalate) blended with hyperbranched polymers:the effect of terminal groups and composition of hyperbranched polymers[J].Macromolecules,200033(05):1864-1870. |
| [11] | Gao C;Yan D.Hyperbranched polymers:from synthesis to applications[J].Progress in Polymer Science,200429(03):183-275. |
| [12] | McKee M G;Unal S;Wilkes G L.Branched polyesters:recent advances in synthesis and performance[J].Progress in Polymer Science,200530(05):507-539. |
| [13] | (Z)agar E;(Z)igon M.Aliphatic hyperbranched polyesters based on 2,2-bis(methylol)propionic acid-determination of structure,solution and bulk properties[J].Progress in Polymer Science,201136(01):53-88. |
| [14] | 张雅;柴春鹏;罗运军.HBP基二茂铁/环氧树脂复合材料的制备及性能[J].复合材料学报,201330(06):48-53. |
| [15] | Malmstroem E;Johansson M;Hult A.Hyperbranched aliphaticpolyesters[J].Macromolecules,199528(05):1698-1703. |
| [16] | Jiang G;Wang L;Chen T.Synthesis and self-assembly of hyperbranched polymers with benzoyl terminal arms[J].Journal of Polymer Science Part A:Polymer Chemistry,200543(22):5554-5561. |
| [17] | GB/T 1040-2006.GB/T 1040-2006塑料拉伸性能的测定[S].北京:中国标准出版社,2006. |
| [18] | GB/T 1843-2008.GB/T 1843-2008塑料悬臂梁冲击强度的测定[S].北京:中国标准出版社,2006. |
| [19] | Nara S;Komiya T.Studies on the relationship between water-satured state and crystallinity by the diffraction method for moistened potato starch[J].Starch-St(a)rke,198335(12):407-410. |
| [20] | 金日光;华幼卿.高分子物理[M].北京:化学工业出版社,2006:236-237. |
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%