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Author:

Wang, Jianli (Wang, Jianli.) | He, Ling (He, Ling.) | Pan, Aizhao (Pan, Aizhao.) | Zhao, Yanrui (Zhao, Yanrui.)

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Abstract:

To obtain durable adhesive, highly hydrophobic, and thermostable coatings, novel fluorinated glycidyl copolymers grafted on SiO2 nanoparticles were prepared by SiO2-Br initiating covalent adhesion of glycidyl methacrylate (GMA) and low surface free energy of dodecafluoroheptyl methacrylate (12FMA) via surface initiated atom transfer radical polymerization. In tetrahydrofuran solution, the obtained random-structured SiO2-g-(PGMA-co-P12FMA) behaves with 120 ± 10 nm core-shell morphology as SiO2-core (110 ± 10 nm) and (PGMA-co-P12FMA) shell (8 ± 2 nm). The films cast by these core-shell particles reveal stronger hydrophobic surfaces (SAC = 114-119°), higher resistance to water absorption (Δm = 2478 ng·Hz-1·cm-2), and harder viscoelasticity (ΔD/Δf = -0.379) compared to the SiO2-g-PGMA film (SAC = 90°, Δm = 6153.7 ng·Hz-1·cm-2, and ΔD/Δf = -0.271) due to the accumulated fluorine-rich surface and increased surface roughness. The introduction of antiaging P12FMA obviously improves the durability of adhesive strength of SiO2-g-(PGMA-co-P12FMA) (1.82 MPa) compared with that of SiO2-g-PGMA (decreased from 1.92 to 1.56 MPa) during the humidity thermal aging cycles. Meanwhile, SiO2-g-(PGMA-co-P12FMA) displays thermostability higher than that of both SiO2-PGMA and PGMA-co-P12FMA, attributed to the contribution of SiO2 and P12FMA. Therefore, it is believed that SiO2-g-(PGMA-co-P12FMA) could be an excellent potential candidate for highly hydrophobic and durable adhesive coatings. © 2018 American Chemical Society.

Keyword:

Acrylic monomers Adhesives Atom transfer radical polymerization Bromine compounds Coatings Durability Free energy Free radical polymerization Grafting (chemical) Hydrophobicity Morphology Nanoparticles Plastic coatings Shells (structures) Silica Silica nanoparticles SiO2 nanoparticles Surface chemistry Surface roughness Thermal aging Water absorption

Author Community:

  • [ 1 ] [Wang, Jianli]Department of Chemistry, School of Science, Xi'An Jiaotong University, Xi'an; 710049, China
  • [ 2 ] [He, Ling]Department of Chemistry, School of Science, Xi'An Jiaotong University, Xi'an; 710049, China
  • [ 3 ] [Pan, Aizhao]Department of Chemistry, School of Science, Xi'An Jiaotong University, Xi'an; 710049, China
  • [ 4 ] [Zhao, Yanrui]Department of Chemistry, School of Science, Xi'An Jiaotong University, Xi'an; 710049, China

Reprint Author's Address:

  • [He, Ling]Xi An Jiao Tong Univ, Sch Sci, Dept Chem, Xian 710049, Shaanxi, Peoples R China;;

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Source :

ACS Applied Nano Materials

Year: 2019

Issue: 1

Volume: 2

Page: 617-626

5 . 0 9 7

JCR@2020

Cited Count:

WoS CC Cited Count: 7

SCOPUS Cited Count: 19

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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