Polymer crystallization via non-equilibrium intermediate state and control of higher order structure

非平衡中间态聚合物结晶及高阶结构控制

• 批准号: 20245045
• 负责人: KANAYA Toshiji
• 金额: $ 31.87万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20245045/
• 关键词: 非平衡中間体; 高分子結晶化; 高分子高次構造制御; 結晶化誘導期; メモリー効果; 高次構造制御; メゾ相; 精密構造解析; 量子ビーム; シシケバブ; 前駆体; 放射線X線; マイクロビーム; 流動誘起中間体; メゾ構造

We have studied structure and structure formation mechanism of non-equilibrium intermediate states of polymers during the crystallization process using small-and wide-angle X-ray scattering, small-and wide-angle neutron scattering and light scattering. It was found in the study on polyamide that the structure formation during the incubation period before crystallization was closely related to the melt memory effects. We also investigated structure of intermediate state(or precursor) of shish-kebab during the shear-induced crystallization using micro-beam small-and wide-angle X-ray scattering to find there exist crystallites. In addition we revealed that the role of molecular weight in the shish-kebab formation using small-angle X-ray and neutron scattering. In the study of mesomorphic phase of isotactic polypropylene we found the best heating rate to obtain a giant single crystals. These findings surely provide many new insights on the crystallization mechanism via the non-equilibrium intermediate states and show new ways how to control the higher order structure of polymers.

用小角和广角X射线散射、小角和广角中子散射和光散射研究了聚合物结晶过程中非平衡中间态的结构和结构形成机理。在对聚酰胺的研究中发现，结晶前孕育期的结构形成与熔体记忆效应密切相关。我们还利用微束小角和广角X射线散射研究了羊肉串在剪切诱导结晶过程中中间态(或前驱体)的结构，发现存在微晶。此外，我们还利用小角X射线和中子散射揭示了分子量在烤肉串形成中的作用。在等规聚丙烯的介晶相研究中，找到了获得巨型单晶的最佳升温速率。这些发现无疑为通过非平衡中间态的结晶机理提供了许多新的见解，并为控制聚合物的高阶结构提供了新的途径。

项目成果

Melting Process of Shish-kebab structure obsereved with neutron and x-ray scattering measurements

通过中子和 X 射线散射测量观察烤串结构的熔化过程

• 发表时间: 2008
• 作者: Go Matsuba;Koji Nishida;Toshiji Kanaya
• 通讯作者: Toshiji Kanaya

Glassy Dynamics in Polymer Thin Films by Inelastic Neutron Scattering

通过非弹性中子散射研究聚合物薄膜中的玻璃态动力学

• 发表时间: 2008
• 作者: 水上雅史;栗原和枝;Toshiji Kanaya
• 通讯作者: Toshiji Kanaya

Synchrotron X-ray scattering studies on crystallization with ultra-high moleculer weight component under shear flow

剪切流下超高分子量组分结晶的同步辐射X射线散射研究

• 发表时间: 2008
• 作者: 堀部貴大;波多野学;石原一彰;Zubaida A.Ansari;宮崎宏基,坂口勲,安達裕,石垣隆正,大橋直樹;Go Matsuba
• 通讯作者: Go Matsuba

アイソタクチツクポリプロピレンのメゾ相のアニール効果

等规聚丙烯中间相的退火效应

• 发表时间: 2008
• 作者: 下澤雅明;宍戸寛明;水上雄太;安元智司;樹本好央;芝内孝禎;松田祐司;寺嶋孝仁;西田幸次
• 通讯作者: 西田幸次

Effects of various molecular weights components on shish-kebab structure with small angle x-ray and neutron scattering measurements

通过小角 X 射线和中子散射测量不同分子量组分对 shish-kebab 结构的影响

• 发表时间: 2011
• 作者: Matsuba G;他4名
• 通讯作者: 他4名