东华大学学报（英文版）2025，Vol.42Issue(6)：606-619,14.DOI:10.19884/j.1672-5220.202501010
PEG改性PET母粒的合成:基于相区尺寸调控制备低温易染、高色牢度PET纤维
Synthesis of PEG-Modified PET Masterbatch:Preparation of Low-Temperature Easy-Dyeing,High-Fastness PET Fibers Based on Phase Domain Size Regulation
摘要
Abstract
Polyethylene terephthalate(PET)fibers are the largest category of chemical fibers and are widely used.However,the dyeing of PET fibers requires high temperature and pressure(130℃and 0.2 MPa),and the dyeing process consumes huge amounts of energy.Existing studies have shown that the dyeing ability of PET is directly related to the size of the amorphous region,which determines the external conditions for dyeing.In this research,we synthesized a series of low-temperature easy-dyeing masterbatches,PET-co-polyethylene glycol(PETEG),using polyethylene glycol(PEG)with different number-average molecular masses Mn and additive amounts.The phase domain size of the amorphous region of PET fibers was regulated via the masterbatch method.The relationship between the phase domain size and dyeing performance was explored from three perspectives:the amount of masterbatch,type of masterbatch,and PEG relative molecular mass.The results indicate that the fiber sample with PEG(Mn=2 000 g/mol)at a mass fraction of 20%modified masterbatch has a smaller crystalline lamellar thickness(5.59 nm)and a larger interlamellar amorphous layer thickness(6.43 nm).The increase in the long period and lamellar inclination angle results in a looser structure,allowing small molecule dyes to diffuse into the fibers more easily.The dye-uptake increases from 63.21%to 92.66%at 100℃with the addition of the masterbatch.Additionally,the dye-uptake of the modified fibers increases with the relative molecular mass of PEG and the mass fraction of the masterbatch.All modified fibers achieve a staining color fastness of grade 4 or higher.This research demonstrates a simple masterbatch method that enables atmospheric pressure dyeing and provides a practical solution for efficient,low-temperature,and low-energy dyeing of PET fibers.关键词
聚对苯二甲酸乙二醇酯(PET)纤维/聚乙二醇(PEG)/低温染色/相区尺寸/上染率/色牢度Key words
polyethylene terephthalate(PET)fiber/polyethylene glycol(PEG)/low-temperature dyeing/phase domain size/dye-uptake/color fastness分类
化学化工引用本文复制引用
肖永兵,徐朝晨,沈午枫,张圣明,陈向玲,吉鹏,王朝生,王华平..PEG改性PET母粒的合成:基于相区尺寸调控制备低温易染、高色牢度PET纤维[J].东华大学学报（英文版）,2025,42(6):606-619,14.基金项目
Key R&D Program of the Xinjiang Uygur Autonomous Region,China(No.2024B01011) （No.2024B01011）
