Reactive Tetrablock Copolymers Containing Glycidyl Methacrylate. Synthesis and Morphology Control in Epoxy−Amine Networks
Reactive Tetrablock Copolymers Containing Glycidyl Methacrylate. Synthesis and Morphology Control in Epoxy−Amine Networks
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DOI：
10.1021/ma0347565
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发表时间：
2003-11
期刊：
影响因子：
5.5
通讯作者：
Valéry Rebizant;V. Abetz;F. Tournilhac;François Court;L. Leibler
中科院分区：
文献类型：
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作者：
Valéry Rebizant;V. Abetz;F. Tournilhac;François Court;L. Leibler
以四氢呋喃（THF）为溶剂，采用活性阴离子聚合法合成了聚苯乙烯-聚丁二烯-聚甲基丙烯酸缩水甘油酯嵌段共聚物（SBG）和聚苯乙烯-聚丁二烯-聚甲基丙烯酸甲酯-聚甲基丙烯酸缩水甘油酯嵌段共聚物（SBMG）。SBMG共聚物用作基于双酚A二缩水甘油醚（DGEBA）的环氧热固性树脂的改性剂。不同的技术，包括差示扫描量热法（DSC），傅里叶变换红外光谱（FT-IR），透射电子显微镜（TEM），和光学浊点测量已被用来证明具有反应性共聚物的优点，微调和控制纳米结构材料的形态。FT-IR和DSC研究用于跟踪反应性嵌段G与环氧-胺体系的反应动力学和环氧-胺体系的交联动力学。他们提供了一个有趣的洞察力的问题的因素，管理驱逐的甲基丙烯酸类生物体。
Polystyrene-block-polybutadiene-block-poly(glycidyl methacrylate) (SBG) and polystyrene-block-polybutadiene-block-poly(methyl methacrylate)-block-poly(glycidyl methacrylate) copolymers (SBMG) were synthesized by sequential living anionic polymerization in tetrahydrofuran (THF). SBMG copolymers were used as modifiers for epoxy thermosets based on the diglycidyl ether of bisphenol A (DGEBA). Different techniques including differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and optical cloud point measurements have been used to demonstrate the advantage of having a reactive copolymer to finely tune and control the morphology of nanostructured materials. The FT-IR and DSC studies were used to follow both the kinetics of reaction of the reactive block G with the epoxy−amine system and of cross-linking of the epoxy−amine system. They give an interesting insight into the problem of factors governing the expulsion of the methacrylic blo...