杂化纳米粒子成核剂的制备及其对聚对苯二甲酸乙二酯结晶行为的影响

Preparation of Hybrid Nanoparticle Nucleating Agents and Their Effects on the Crystallization Behavior of Poly(ethylene terephthalate).

作者信息

Han Zhenzhen, Wang Yao, Wang Jiuxing, Wang Shichao, Zhuang Hongwei, Liu Jixian, Huang Linjun, Wang Yanxin, Wang Wei, Belfiore Laurence A, Tang Jianguo

机构信息

Institute of Hybrid Materials, The National Base of International Scientific and Technological Cooperation on Hybrid Materials, The National Base of Polymer Hybrid Materials in the Programme of Introducing Talents Dicipline to Universities, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.

Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA.

出版信息

Materials (Basel). 2018 Apr 11;11(4):587. doi: 10.3390/ma11040587.

DOI:10.3390/ma11040587

PMID:29641456

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5951471/

Abstract

In this research contribution, the primary objective was to enhance the crystallization behavior of poly(ethylene terephthalate) (PET). To accomplish this tack, three kinds of new nucleating agents SiO₂-diethylene glycol-LMPET (PET-3), SiO₂-triethylene glycol-LMPET(PET-4) and SiO₂-tetraethylene glycol-LMPET (PET-5) nucleating agents were prepared via grafting different oligomers (diethylene glycol; triethylene glycol and tetraethylene glycol) to the surface of nano-SiO₂ and then linking to the low molecular weight poly(ethylene terephthalate) (LMPET). These nano-particle nucleating agents facilitated the crystallization of PET. Differential scanning calorimetry (DSC) studies of the composites that pure PET blended with PET-3, PET-4 and PET-5 indicated that the longer ethoxy segment in the nucleating agents exhibited (i) higher degrees of crystallinity; (ii) faster rates of crystallization; and (iii) higher crystallization temperatures. The Jeziorny method was employed to analyze the non-isothermal crystallization kinetics of the composites. These works demonstrated that the PET-3, PET-4 and PET-5 were attractive nucleating agents for poly(ethylene terephthalate), and the longer the chain length of the ethoxy segment in the nucleating agents, the more efficient the nucleation effect.

摘要

在本研究中，主要目标是提高聚对苯二甲酸乙二酯（PET）的结晶行为。为实现这一目标，通过将不同的低聚物（二甘醇、三甘醇和四甘醇）接枝到纳米SiO₂表面，然后连接到低分子量聚对苯二甲酸乙二酯（LMPET）上，制备了三种新型成核剂SiO₂ - 二甘醇 - LMPET（PET - 3）、SiO₂ - 三甘醇 - LMPET（PET - 4）和SiO₂ - 四甘醇 - LMPET（PET - 5）成核剂。这些纳米颗粒成核剂促进了PET的结晶。对纯PET与PET - 3、PET - 4和PET - 5共混物的差示扫描量热法（DSC）研究表明，成核剂中较长的乙氧基链段表现出：（i）更高的结晶度；（ii）更快的结晶速率；以及（iii）更高的结晶温度。采用Jeziorny法分析了复合材料的非等温结晶动力学。这些研究表明，PET - 3、PET - 4和PET - 5是聚对苯二甲酸乙二酯有吸引力的成核剂，并且成核剂中乙氧基链段的链长越长，成核效果越有效。