Preparation of QDs@SiO2-PEG-LMPET and its influence on crystallization and luminescence of polyethylene terephthalate

Yanqi Wang; Yao Wang; Miaorong Zhang; Jixian Liu; Linjun Huang; Yanxin Wang; Tian Hao; Jie Li; Jianguo Tang

doi:10.1088/1361-6528/abd3c9

Preparation of QDs@SiO₂-PEG-LMPET and its influence on crystallization and luminescence of polyethylene terephthalate

Nanotechnology. 2021 Mar 12;32(22). doi: 10.1088/1361-6528/abd3c9.

Authors

Yanqi Wang¹, Yao Wang¹, Miaorong Zhang¹, Jixian Liu¹, Linjun Huang¹, Yanxin Wang¹, Tian Hao¹, Jie Li¹, Jianguo Tang¹

Affiliation

¹ Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People's Republic of China.

PMID: 33321482
DOI: 10.1088/1361-6528/abd3c9

Abstract

The composite particles composed of quantum dots coated with silica and grafted with copolymer of polyethylene glycol and low molecular weight polyethylene terephthalate (QDs@SiO₂-PEG-LMPET) are synthesized. The internal QDs provide luminescent performance and combine with SiO₂to form QDs@SiO₂with good dispersion to solve the defect that small-sized SiO₂is prone to agglomerate. The block polymer LMPET-PEG grafted on the surface can make the composite particles better compatible with the PET matrix. In summary, QDs@SiO₂-PEG-LMPET not only play the same role as SiO₂to enhance the crystallization performance of PET matrix, but also provide stable luminescence performance, which is multifunctional additive with broad application prospects.

Keywords: crystallization; luminescent; multifunctional materials; polyethylene terephthalate; quantum dots.