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Wang J, Zhang W, Zhang Y, Li H. Preparation of Polymer-Based Nano-Assembled Particles with Fe 3O 4 in the Core. Polymers (Basel) 2023; 15:polym15112498. [PMID: 37299297 DOI: 10.3390/polym15112498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/25/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
Organic-inorganic nanocomposite particles, possessing defined morphologies, represent the next frontier in advanced materials due to their superior collective performance. In this pursuit of efficient preparation of composite nanoparticles, a series of diblock polymers polystyrene-block-poly(tert-butyl acrylate) (PS-b-PtBA) were initially synthesized using the Living Anionic Polymerization-Induced Self-Assembly (LAP PISA) technique. Subsequently, the tert-butyl group on the tert-butyl acrylate (tBA) monomer unit in the diblock copolymer, yielded from the LAP PISA process, was subjected to hydrolysis using trifluoroacetic acid (CF3COOH), transforming it into carboxyl groups. This resulted in the formation of polystyrene-block-poly(acrylic acid) (PS-b-PAA) nano-self-assembled particles of various morphologies. The pre-hydrolysis diblock copolymer PS-b-PtBA produced nano-self-assembled particles of irregular shapes, whereas post-hydrolysis regular spherical and worm-like nano-self-assembled particles were generated. Utilizing PS-b-PAA nano-self-assembled particles that containing carboxyl groups as polymer templates, Fe3O4 was integrated into the core region of the nano-self-assembled particles. This was achieved based on the complexation between the carboxyl groups on the PAA segments and the metal precursors, facilitating the successful synthesis of organic-inorganic composite nanoparticles with Fe3O4 as the core and PS as the shell. These magnetic nanoparticles hold potential applications as functional fillers in the plastic and rubber sectors.
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Affiliation(s)
- Jian Wang
- The Department of Materials Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China
| | - Wenjie Zhang
- The Department of Materials Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China
| | - Yating Zhang
- The Department of Materials Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China
| | - Haolin Li
- The Department of Materials Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China
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Chen R, Zhang Z, Zhou M, Han Y, Li F, Liu J, Zhang L. Molecular Dynamics Simulations of Polymer Nanocomposites Welding: Interfacial Structure, Dynamics and Strength. Macromol Rapid Commun 2022; 43:e2200221. [PMID: 35686731 DOI: 10.1002/marc.202200221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/16/2022] [Indexed: 11/12/2022]
Abstract
Polymer welding has received numerous scientific attention, however, the welding of polymer nanocomposites (PNCs) has not been studied yet. In this work, via coarse-grained molecular dynamics simulation, we focus our attention on investigating the welding interfacial structure, dynamics and strength by constructing the upper and lower layers of PNCs, by varying the polymer-nanoparticle (NP) interaction strength εNP-p . Remarkably, at low εNP-p , the NPs gradually migrate into the top and bottom surface layer perpendicular to the z direction during the adhesion process, while they are distributed in the middle region at high εNP-p . Meanwhile, the dimension of polymer chains is found to exhibit a remarkable anisotropy evidenced by the root-mean-square radius of gyration in the xy- (Rg,xy ) and z- (Rg,z ) component. The welding interdiffusion depth increases the fastest at low εNP-p, attributed to the high mobility of polymer chains and NPs. Lastly, although the mechanical properties of PNCs at high εNP-p is the strongest because of the presence of the NPs in the bulk region, the welding efficiency is the greatest at low εNP-p . Generally, our work could provide a fundamental understanding of the interfacial welding of PNCs, in hopes of guiding to design and fabricate excellent self-healable PNCs. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ruisi Chen
- Center of Advanced Elastomer Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Zhiyu Zhang
- Center of Advanced Elastomer Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Mengyu Zhou
- Center of Advanced Elastomer Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Yue Han
- Center of Advanced Elastomer Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Fanzhu Li
- Center of Advanced Elastomer Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.,State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.,Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Jun Liu
- Center of Advanced Elastomer Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.,State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.,Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.,Interdisciplinary Research Center for Artificial Intelligence, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Liqun Zhang
- Center of Advanced Elastomer Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.,State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.,Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
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