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Aggregation States of Poly(4-methylpentene-1) at a Solid Interface
Polymer Journal ( IF 2.3 ) Pub Date : 2018-11-07 , DOI: 10.1038/s41428-018-0134-7
Kentaro Yamamoto , Daisuke Kawaguchi , Kazuki Sasahara , Manabu Inutsuka , Satoru Yamamoto , Kiminori Uchida , Kazuki Mita , Hiroki Ogawa , Mikihito Takenaka , Keiji Tanaka

AbstractA thin film of poly(4-methylpentene-1) (P4MP1) was prepared on a quartz substrate, which was a model system of an interface in filler-reinforced semicrystalline polymer composites. Grazing-incidence wide-angle X-ray diffraction measurements revealed that P4MP1 in the thin film after isothermal crystallization formed a Form I crystal polymorph composed of a tetragonal unit cell with a 72 helix, in which the chain axis was oriented along the direction parallel to the quartz interface. Combining sum-frequency generation vibrational spectroscopy with molecular dynamics simulation enabled us to gain access to the local conformation of P4MP1 chains at the quartz interface and the changes that occurred with isothermal crystallization. Finally, the way in which the initial chain orientation at the substrate interface impacted the crystalline structure in the thin film was discussed.A poly(4-methylpentene-1) (P4MP1) film was prepared on a quartz substrate, which was a model system of interfaces in a filler-reinforced semicrystalline polymer composite. Grazing-incidence wide-angle X-ray diffraction measurements revealed that P4MP1 in the film after the isothermal crystallization formed a Form I crystal polymorph, in which the chain axis was oriented along the direction parallel to the quartz interface. Combining sum-frequency generation vibrational spectroscopy with molecular dynamics simulation enabled us to study the local conformation of P4MP1 chains at the quartz interface and the changes that occurred with isothermal crystallization.

中文翻译:

聚(4-甲基戊烯-1)在固体界面的聚集态

摘要 在石英衬底上制备了聚(4-甲基戊烯-1) (P4MP1) 薄膜,石英衬底是填料增强半晶聚合物复合材料界面的模型系统。掠入射广角 X 射线衍射测量表明,等温结晶后薄膜中的 P4MP1 形成 I 型晶体多晶型,由具有 72 个螺旋的四方晶胞组成,其中链轴沿平行于石英接口。将和频生成振动光谱与分子动力学模拟相结合,使我们能够获得石英界面处 P4MP1 链的局部构象以及等温结晶所发生的变化。最后,讨论了衬底界面处的初始链取向影响薄膜中晶体结构的方式。 在石英衬底上制备了聚(4-甲基戊烯-1)(P4MP1)薄膜,这是界面的模型系统在填料增强的半结晶聚合物复合材料中。掠入射广角 X 射线衍射测量表明,等温结晶后薄膜中的 P4MP1 形成 I 型晶体多晶型物,其中链轴沿平行于石英界面的方向取向。将和频生成振动光谱与分子动力学模拟相结合,使我们能够研究石英界面处 P4MP1 链的局部构象以及等温结晶时发生的变化。在石英基板上制备了聚(4-甲基戊烯-1)(P4MP1)薄膜,石英基板是填料增强半结晶聚合物复合材料中界面的模型系统。掠入射广角 X 射线衍射测量表明,等温结晶后薄膜中的 P4MP1 形成 I 型晶体多晶型物,其中链轴沿平行于石英界面的方向取向。将和频生成振动光谱与分子动力学模拟相结合,使我们能够研究石英界面处 P4MP1 链的局部构象以及等温结晶时发生的变化。在石英基板上制备了聚(4-甲基戊烯-1)(P4MP1)薄膜,石英基板是填料增强半结晶聚合物复合材料中界面的模型系统。掠入射广角 X 射线衍射测量表明,等温结晶后薄膜中的 P4MP1 形成 I 型晶体多晶型物,其中链轴沿平行于石英界面的方向取向。将和频生成振动光谱与分子动力学模拟相结合,使我们能够研究石英界面处 P4MP1 链的局部构象以及等温结晶时发生的变化。掠入射广角 X 射线衍射测量表明,等温结晶后薄膜中的 P4MP1 形成 I 型晶体多晶型物,其中链轴沿平行于石英界面的方向取向。将和频生成振动光谱与分子动力学模拟相结合,使我们能够研究石英界面处 P4MP1 链的局部构象以及等温结晶时发生的变化。掠入射广角 X 射线衍射测量表明,等温结晶后薄膜中的 P4MP1 形成 I 型晶体多晶型物,其中链轴沿平行于石英界面的方向取向。将和频生成振动光谱与分子动力学模拟相结合,使我们能够研究石英界面处 P4MP1 链的局部构象以及等温结晶时发生的变化。
更新日期:2018-11-07
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