Lee, Albert S. Jeon, Hyeonyeol Choi, Seung-Sock Park, Jeyoung Hwang, Sung Yeon Jegal, Jonggeon Oh, Dongyeop X. Kim, Byoung Chul Hwang, Seung Sang 2024-01-20T01:02:46Z 2024-01-20T01:02:46Z 2021-09-05 2017-07-07 0266-3538 https://pubs.kist.re.kr/handle/201004/122532 Most inorganic nucleating agents for poly(ethylene terephthalate) (PET) have limited nucleating ability due to poor compatibility with PET. Polyhedral oligomeric silsesquioxanes (FOSS) is a type of cage shaped organic/inorganic hybrid nanoparticles with three different particle sizes: octameric (T-8), decameric (T-10), and dodecameric (T-12). FOSS is considered as a promising nucleating agent for PET because the inorganic moieties contribute to high thermal stability and nucleation and the organic moieties can be tethered to PET chains. In contrast to T-8 FOSS, the nucleation ability of T-12 FOSS for PET has been poorly reported. In this study, our newly synthesized aminopropyl functionalized T-12 FOSS (A-FOSS) is proposed as a potential nucleating agent for PET. The amine group of A-FOSS is able to be chemically conjugated to PET chains, thereby giving a more homogeneous dispersion of T-12 POSS in PET than nonfunctional T-12 Phenyl POSS (N-POSS). Its PET composites gave a similar to 1.2 fold higher crystallization temperature and similar to 2.7 fold higher shear-induced crystallization rate over pristine PET. Such nucleating effects for PET is more effective than those of non-functional T-12 FOSS and the more widely studied T-8 POSS. This strategy is potentially beneficial for the high-shear melt processes of PET such as spinning and film extrusion. (C) 2017 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD POLY(BUTYLENE TEREPHTHALATE) MECHANICAL-PROPERTIES PHYSICAL-PROPERTIES PET POSS NANOCOMPOSITES NANOPARTICLES MORPHOLOGY FIBERS CLAY Crystallization derivation of amine functionalized T-12 polyhedral oligomeric silsesquioxane-conjugated poly(ethylene terephthalate) Article 10.1016/j.compscitech.2017.04.015 1 COMPOSITES SCIENCE AND TECHNOLOGY, v.146, pp.42 - 48 COMPOSITES SCIENCE AND TECHNOLOGY 146 42 48 scie scopus 000403120000006 2-s2.0-85017499118 Materials Science, Composites Materials Science Article POLY(BUTYLENE TEREPHTHALATE) MECHANICAL-PROPERTIES PHYSICAL-PROPERTIES PET POSS NANOCOMPOSITES NANOPARTICLES MORPHOLOGY FIBERS CLAY Functional composites Nano composites Particle-reinforced composites Thermomechanical properties Interphase