相关实验视频

Updated: Jun 4, 2025

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals

Published on: February 9, 2017

在PTT/PET混合物中通过两步结晶形成双球石

Kousuke Sugeno¹, Hiromu Saito¹

¹Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo 184-8588, Japan.

|December 17, 2024

概括

这项研究揭示了聚甲二甲 (PTT) 和聚甲二甲 (PET) 混合物的两步结晶. 起初,PET形成了紧的球状岩石,其次是树突性PTT生长,形成了一个独特的双球状岩石结构.

科学领域:

聚合物科学聚合物科学
材料科学材料科学材料科学
结晶运动学结晶运动学

背景情况:

可混合的晶体/晶体聚合物混合物表现出复杂的结晶行为.
了解形态演变对于定制材料属性至关重要.

研究的目的:

为了研究聚二甲 (PTT) 和聚乙 (PET) 混合物的结晶动力学和形态演变.
阐明两步结晶机制和双球体的形成.

主要方法:

在215°C的异热结晶.
集成的光散射强度测量.
原子力显微镜 (AFM) 用于形态分析.

主要成果:

在70/30 PTT/PET混合物中观察到一个两步结晶过程.
第一个步骤涉及紧型聚乙烯二甲 (PET) 球状体的生长,其次是树突型聚三甲 (PTT) 球状体的生长.
原子力显微镜揭示了PET球体内交织的PTT纤维,形成一个双球体结构,PET内部和PTT外部区域.

结论:

观察到的双球石结构来自PET和PTT的顺序结晶.
从PET晶体生长前线中排除PTT驱动了PTT纤维的接和随后的外向生长.
这项研究提供了关于聚合物混合物的复杂结晶机制的见解.

关键词:

在这里,PET是PET.在PTTTT中,我们可以看到PTT.混合混合的混合物.结晶化结晶化的过程.双球球体质的双球球体质.

更多相关视频

Author Spotlight: Non-Invasive Imaging of Complex Bio-Structures Using Polarization-Sensitive Two-Photon Microscopy

Author Spotlight: Non-Invasive Imaging of Complex Bio-Structures Using Polarization-Sensitive Two-Photon Microscopy

Published on: September 8, 2023

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

Published on: April 9, 2018

相关概念视频

Types of Step-Growth Polymers: Polyesters

Types of Step-Growth Polymers: Polyesters

The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...