Modification of epoxy resins with functional silanes, polysiloxanes, silsesquioxanes, silica and silicates

Chruściel, Jerzy; Leśniak, E.

doi:10.1016/j.progpolymsci.2014.08.001

Cited by 385 publications

(170 citation statements)

References 271 publications

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“…It has been reported that the incorporation of POSS cages into polymers improves several properties such as thermal stability, glass transition temperature, flame and heat resistance and modulus. 26 In spite of the good characteristics of the hybrid materials obtained in our previous study, there was not a clear evidence of a real covalent linkage between PEI-Si structure (and the POSS cages formed by sol-gel) with the epoxy matrix, which is usually required to achieve the best mechanical performance in sol-gel thermosets.…”

Section: Introductionmentioning

confidence: 56%

Hybrid epoxy networks from ethoxysilyl-modified hyperbranched poly(ethyleneimine) and inorganic reactive precursors

Acebo

Fernández‐Francos

Santos³

et al. 2015

European Polymer Journal

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New epoxy-silica hybrid coatings were prepared by a dual process consisting of a sol-gel process using tetraethoxysilane (TEOS) or 3-glycidyloxypropyl trimethoxysilane (GPTMS) in the presence of hyperbranched poly(ethyleneimine) with ethoxysilyl groups at the chain ends (PEI-Si) followed by a homopolymerization of diglycidylether of bisphenol A (DGEBA) using 1-methylimidazole (1-MI) as anionic initiator. The influence of the amount of TEOS and GPTMS in the characteristics of the coating was examined. Thin transparent films were obtained and their morphology was observed by transmission electron microscopy (TEM). The hydrolytic condensation was confirmed by 29Si-NMR studies. Cage-like nanometric structures were formed in case of adding GPTMS and bigger silica particles on adding TEOS to the formulation. Thermal stability was evaluated by thermogravimetry and the scratch resistance properties were also investigated, showing an improvement in resistance to break and to detachment in all the coatings containing GPTMS. Polymer Journal as you recommended us.As you mentioned in your decision letter the main remark is that the novelty has not been stressed sufficiently. However, the general comments of the reviewers were not bad.We recognized that the redaction did not include the novelty until we reach the discussion part and therefore we have included in the new version your opinion and we have stressed the novelty achieved in our work from the beginning. We have also included some changes suggested by the reviewers. Thus, we hope you can go further with the acceptance of our paper in European Polymer Journal.Looking forward to hearing from you, I remain. Cover LetterComments to the reviewers.Reviewer #1: Graphical abstract:It is not clear what the authors want to transmit in the graphical abstract. The paper is not directly addressing the application procedure of the coatings. The graphical abstract should be adapted to show more clearly the real work addressed in this paper. We have changed completely the graphical abstracts and we hope that the new version clearly represent the work contained in the article HighlightsThe highlights do not reflect the main findings / advances in this paper. They should be rewritten to show the key findings / novelty. We have also changed and stressed the key findings AbstractThe abstract needs to be revised. Does the TEOS / GPTMS affect the properties of the hyperbranched polymer? So yes, in which direction? The abstract should be more indicative of what the reader will find in the paper. The abstract has been rewritten. The addition of TEOS does not affect the properties of the hyperbranched polymer, but the properties of the final hybrid thermoset. The addition of TEOS leads to the formation of bigger particles, quite different from the cage-like particles formed from PEI-Si and/or GPTMS. The addition of GPTMS produces an improvement in resistance to break and to detachment in all the coatings. The incorporation of GPTMS to TEOS containing formulations allowed to prepar...

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Section: Introductionmentioning

confidence: 56%

Hybrid epoxy networks from ethoxysilyl-modified hyperbranched poly(ethyleneimine) and inorganic reactive precursors

Acebo

Fernández‐Francos

Santos³

et al. 2015

European Polymer Journal

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“…2b) are a waste material produced by the mechanical hulling and purification of pumpkin seeds. The main component of pumpkin seed hulls are mixtures of polysaccharide substances (cellulose, hemicellulose, pectin, gum, slime mold) and non-polysaccharide substances (lignin) [11]. …”

Section: Methodsmentioning

confidence: 99%

“…500 g of the polymer was mixed with the tested filler content with the addition of adhesion-promoting carbofunctional silane marketed under the name of aminopropyltriethoxysilane [12]. The materials were mixed, and the produced polymer blend was fed into the hopper of the injection molding machine.…”

Section: Methodsmentioning

confidence: 99%

The effect of selected natural fillers on the mechanical properties of low-density polyethylene

Głogowska

Majewski

2017

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The effect of selected natural fillers on the mechanical properties of low-density polyethylene Wpływ wybranych napełniaczy naturalnych na właściwości mechaniczne polietylenu małej gęstości AbstractThe popularity of using natural waste products in different branches of industry, including polymer processing, results from the emphasis of international nature conservation organizations on ecological and environmental problems, such as recycling, storage and the disposal of waste products. This paper investigates the effect of two natural fillers: wheat bran and pumpkin seeds obtained from food industry waste products, on selected mechanical properties of LDPE molded pieces. The polymer blends are examined with respect to their basic mechanical properties and microstructure.Keywords: natural waste material, mechanical properties, wheat bran, pumpkin seeds Streszczenie Popularyzacja wykorzystania odpadów naturalnych w różnych gałęziach przemysłu, m.in. w przetwórstwie tworzyw, związana jest z naciskiem światowych organizacji odpowiadających za ochronę środowiska na kwestie ekologiczne, takie jak recykling oraz składowanie i utylizacja odpadów. W artykule przedstawiono badania wpływu dwóch napełniaczy, otrębów pszennych oraz łusek pestek dyni, stanowiących odpady produkcyjne przemysłu spożywczego, na wybrane właściwości mechaniczne wyprasek wtryskowych z PE-LD. Przeprowadzono badania podstawowych właściwości wytrzymałościowych oraz dokonano analizy struktury mikroskopowej otrzymanych kompozycji polimerowych.Słowa kluczowe: odpady naturalne, właściwości mechaniczne, otręby pszenne, pestki dyni

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“…Another way to modify the limited properties of epoxy is by an addition of reactive silanes [9]. This modification of epoxy resin with siloxane via organicinorganic hybrid coating has been studied [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Polyurethane/Silica Modified Epoxy Polymer Based on 1,3-Propanediol for Coating Application

et al. 2017

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Synthesis of polyurethane/silica modified epoxy polymer using 1, 3-propanediol ABSTRAK Polimer epoksi termodifikasi poliuretan/silica telah disintesis dengan menggunakan bahan dasar 1,3-propanadiol. Sintesis dilakukan dengan mereaksikan senyawa tolonat dan 1,3-propanadiol (rasio berat NCO/OH = 2,5/1) sebagai bahan penyusun poliuretan dengan epoksi diglisidil eter bisfenol A (DGEBA) disertai penambahan katalis dibutiltin dilaurat (DBTL), dimana penambahan poliuretan sebesar 20% (b/b) terhadap berat epoksi. Berdasarkan spektra dari Fourier Transform Infrared (FTIR) dan 1 H-Nuclear Magnetic Resonance ( 1 HNMR) ditunjukkan adanya ikatan baru yang terbentuk dari hasil reaksi gugus isosianat dan gugus hidroksi, yang mana gugus hidroksi ini berasal dari epoksi dan 1,3-propanadiol. Penambahan silika (5, 10, dan 15% b/b terhadap berat epoksi) ke dalam epoksi termodifikasi poliuretan dilakukan melalui reaksi sol gel tetraetil ortosilikat (TEOS

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Modification of epoxy resins with functional silanes, polysiloxanes, silsesquioxanes, silica and silicates

Cited by 385 publications

References 271 publications

Hybrid epoxy networks from ethoxysilyl-modified hyperbranched poly(ethyleneimine) and inorganic reactive precursors

Hybrid epoxy networks from ethoxysilyl-modified hyperbranched poly(ethyleneimine) and inorganic reactive precursors

The effect of selected natural fillers on the mechanical properties of low-density polyethylene

Synthesis of Polyurethane/Silica Modified Epoxy Polymer Based on 1,3-Propanediol for Coating Application

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