Effects of POSS vertex group on structure, thermal and mechanical properties of PMMA/POSS hybrid materials

Wanke, Cesar Henrique; Pozzo, Denise; Luvison, Caroline; Krindges, Israel; Aguzzoli, César; Soares, Mariliz Gutterres; Bianchi, Otávio

doi:10.1016/j.polymertesting.2016.07.022

Cited by 14 publications

(6 citation statements)

References 58 publications

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“…When the alkyl chain length was middle one ( 3b ), the absorption maximum tends to shift toward higher frequency (1728 cm −1 ). Since the molecular weight of 3b and 3c (>200 000 g mol −1 ) was much higher than that of 3a (≈90 000 g mol −1 ) (Table ), high molecular weight‐related topological restriction of 3b and 3c is considered to be governed by chain movement . On the other hand, as seen in the IR spectrum of 3a in Figure S2 of the Supporting Information, various energy states of the carbonyl region suggest that the carbonyl group of MPC part was attracted by inhomogeneously distributed C 2 H 5 ‐POSS moiety in the MPC‐based polymeric backbone.…”

Section: Resultsmentioning

confidence: 99%

Tuned Surface and Mechanical Properties of Polymeric Film Prepared by Random Copolymers Consisting of Methacrylate‐POSS and 2‐(Methacryloyloxy)ethyl Phosphorylcholine

Chatterjee

Matsumoto

Nishino

et al. 2018

Macro Chemistry & Physics

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Poly(2‐(methacryloyloxy)ethyl phosphorylcholine) (PMPC) is known as a biocompatible polymers. Copolymerization of 2‐(methacryloyloxy)ethyl phosphorylcholine (MPC) and hydrophobic monomers is a general approach that gives bioinert functions to solid materials via the surface coating. However, due to the amorphous nature and super hydrophilicity of the MPC‐based copolymers, both the surface and the mechanical properties are not controlled for biomedical applications. Here, the modulated mechanical property and the surface wettability of the MPC‐based copolymers are shown by using a polyhedral oligomeric silsesquioxane (POSS) methacrylate. MPC is copolymerized with POSS methacrylates bearing different vertex groups of ethyl (C2H5), hexayl (C6H13), and octayl (C8H17) via radical polymerization. It is found that only the C2H5‐POSS induces the increased mechanical strength, low surface wettability, and cellular attachment, suggesting that the C2H5‐POSS moiety restricts the motion of PMPC chain. The finding is anticipated to be tuned for both surface and bulk functions of PMPC for biomedical applications.

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Section: Resultsmentioning

confidence: 99%

Tuned Surface and Mechanical Properties of Polymeric Film Prepared by Random Copolymers Consisting of Methacrylate‐POSS and 2‐(Methacryloyloxy)ethyl Phosphorylcholine

Chatterjee

Matsumoto

Nishino

et al. 2018

Macro Chemistry & Physics

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“…Because of the topology of networks, it may be a good strategy to find a substance that can act as a central point to connect TA molecules as nodes to form an interconnecting network. Polyhedral oligomeric silsesquioxane (POSS), as a multifunctional nanometer hybrid material, exhibits high chemical stability and excellent design ability of end-functional groups. − POSS molecules have shown great potential in the reinforcement fields of mechanical properties by means of their copolymerization, chemical grafting, and physical blending via improvement of compatibility with the polymer matrix. ,, Jiang et al successfully constructed trisilanollsobutyl polyhedral oligomeric silsesquioxane (SO 1450 POSS) on the surface of a carbon fiber by grafting reaction. The monofilament tensile strength of carbon fiber was increased by 1.53%.…”

Section: Introductionmentioning

confidence: 99%

“…19−23 POSS molecules have shown great potential in the reinforcement fields of mechanical properties by means of their copolymerization, chemical grafting, and physical blending via improvement of compatibility with the polymer matrix. 22,24,25 Jiang et al 26 successfully constructed trisilanollsobutyl polyhedral oligomeric silsesquioxane (SO 1450 POSS) on the surface of a carbon fiber by grafting reaction. The monofilament tensile strength of carbon fiber was increased by 1.53%.…”

Section: ■ Introductionmentioning

confidence: 99%

Polyhedral Oligomeric Silsesquioxane Encountering Tannic Acid: A Mild and Efficient Strategy for Interface Modification on Carbon Fiber Composites

Liu

Sheng

et al. 2022

Langmuir

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Designing and controlling the interfacial chemistry and microstructure of the carbon fiber is an important step in the surface modification and preparation of high-performance composites. To address this issue, a tannic acid (TA)/polyhedral oligomeric silsesquioxane (POSS) hybrid microstructure, similar to the topological structure, is designed on the fiber surface by one-pot synthesis under mild conditions. Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM) show that the functionality and surface roughness of the fiber are significantly broadened. Correspondingly, the tensile strength (TS) of CF-TA/POSS100 and interlaminar shear strength (ILSS) of CF-TA/POSS100-based composites increased by 18 and 34%, respectively. Following that, a failure mechanism study is conducted to demonstrate the interphase structure containing TA/POSS, which is quite critical in optimizing the mechanical performance of the multiscale composites. Moreover, the strategy for the use of TA for constructing a robust coating to replace the traditional modification without affecting the fiber intrinsic strength is an improved design and provides a new idea for the development of high-performance composites.

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“…The tensile strength, the izod impact strength, and the elongation at break of the nanocomposite containing 1 wt% of V‐POSS are increased by 15.73%, 75.62%, and 72.71%, respectively in comparison with pristine HIPS. V‐POSS can act as a cross‐linking point to participate in the free radical addition reaction of MMA 31,32 . After crosslinking, the structure of polymer chain changes from linear to three‐dimensional network, which can improve the mechanical properties, heat resistance, and dimensional stability of polymers.…”

Section: Introductionmentioning

confidence: 99%

Organic–inorganic hybrid strategy toward halogen‐free flame retardant, high transparent and reinforced poly(methyl methacrylate)

Xie

Liu

et al. 2022

J of Applied Polymer Sci

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Copolymerization of methyl methacrylate (MMA) with flame retardant monomer is considered to be the most promising method for the preparation of transparent flame retardant poly (methyl methacrylate) (PMMA). However, the mechanical strength and heat resistance of the obtained flame retardant copolymers aren't satisfactory. In this work, the organic-inorganic hybrid PMMA copolymer is designed and synthesized by the ternary copolymerization of MMA, octavinyl silsesquioxane (V-POSS) and phosphorus-containing flame retardant monomer (DEP). V-POSS hardly affects the transparency and flame retardancy of the copolymer, but can significantly improve the thermal stability and mechanical properties. When 0.4 mol% V-POSS is copolymerized, the hybrid copolymer shows limiting oxygen index, heat release rate and visible light transmittance equivalent to the copolymer containing only DEP unit, and the initial decomposition temperature, storage modulus, flexural strength and impact strength are increased by 13 C, 21%, 11% and 23% respectively because of the cross-linking structure and the enhancement of inorganic nanoparticles. This study illustrates the reinforcing and flame retardant effects of hybrid copolymers, and provides a novel strategy for the preparation of high-performance flame retardant plexiglass.

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Effects of POSS vertex group on structure, thermal and mechanical properties of PMMA/POSS hybrid materials

Cited by 14 publications

References 58 publications

Tuned Surface and Mechanical Properties of Polymeric Film Prepared by Random Copolymers Consisting of Methacrylate‐POSS and 2‐(Methacryloyloxy)ethyl Phosphorylcholine

Tuned Surface and Mechanical Properties of Polymeric Film Prepared by Random Copolymers Consisting of Methacrylate‐POSS and 2‐(Methacryloyloxy)ethyl Phosphorylcholine

Polyhedral Oligomeric Silsesquioxane Encountering Tannic Acid: A Mild and Efficient Strategy for Interface Modification on Carbon Fiber Composites

Organic–inorganic hybrid strategy toward halogen‐free flame retardant, high transparent and reinforced poly(methyl methacrylate)

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