Thermal behavior of poly(dimethyl itaconate) and poly(di‐n‐butyl itaconate) copolymerized with methyl methacrylate

Fuente, José Luis de la; Madruga, Enrique López

doi:10.1002/pen.10859

Cited by 16 publications

(10 citation statements)

References 29 publications

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“…Prva upotreba PMMA u stomatologiji bila je za izradu proteza [7]. Međutim, PMMA ima nekoliko nedostataka od kojih su najznačajnije toksičnost zaostalog monomera [8,9] i ograničenja u pogledu mehaničkih svojstava [10].…”

Section: Uvodunclassified

The influence of the shape and size of the AL2O3 particles on the flexural properties of the PMMA composite modified by the addition of dimethyl itaconate

Lazouzi¹,

Vuksanović²,

Tomić³

et al. 2018

Tehnika

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Dentalni materijali imaju posebne zahteve u vezi sa ponašanjem u uslovima eksploatacije. Poli(metil metakrilat) (PMMA) predstavlja jedan od često korišćenih materijala u protetici. Od značajnog je interesa da se poboljšaju mehanička svojstva polimerne matrice dodatkom ojačanja u obliku keramičkih čestica. Pokazalo se da se dodavanjem veoma malih količina čestica u materijal dobijaju bitno poboljšana mehanička svojstva PMMA modifikovanog dodatkom dimetil itakonata (PMMMA/DMI). U okviru ovog rada ispitaće se kako utiče dodatak komercijalnih nanočestica aluminijum oksida i mikro čestica aluminijum oksida dobijenih sol-gel tehnikom na mehanička svojstva dobijenog kompozitnog materijala. Sol-gel tehnikom sintetisane su čiste aluminijum oksidne čestice i čestice dopirane gvožđe oksidom. Pripremeljeni su kompozitni materijali sa 1 mas. %, 3 mas. % i 5 mas. % čestica na bazi aluminijum oksida. Pokazano je da svi testirani punioci poboljšavaju savojna svojstva materijala u odnosu na čistu matricu PMMA/DMI i da je najpogodnija količina čestica 1 mas. %. Između svih vrsta dodatih čestica, mikro čestice aluminijum oksida dobijenih sol-gel tehnikom su pokazale najbolje vrednosti poboljšanja savojne čvrstoće i modula.

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Section: Uvodunclassified

The influence of the shape and size of the AL2O3 particles on the flexural properties of the PMMA composite modified by the addition of dimethyl itaconate

Lazouzi¹,

Vuksanović²,

Tomić³

et al. 2018

Tehnika

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“…Iz tabele 3 je uočljivo da sa povećanjem udela DMI ne dolazi do značajnih razlika promene zatezne čvrstoće i da je ona skoro konstantna, oko 20%. Fernandez-Garcia i De la Fuente [21] ispitivali su termičku degradaciju kopolimera PMMA/PDMI kao i PMMA/PDBI i došli do rezultata da se kopolimer PMMA/PDMI pri degradaciji ponaša slično čistom PMMA. Za razliku od PMMA/PDMI, kod PMMA/PDBI dolazi do povećanja promene zatezne čvrstoće sa 19% kod čistog PMMA na 26% kod kopolimera sa 10 mas% DBI.…”

Section: Pmma/10pdbiunclassified

“…Došli su do zaključka da temperatura ostakljivanja opada sa porastom udela ita-konata u kopolimeru kao i sa porastom dužine bočnog lanca dialkil-itakonata. Isti autori su ispitivali uticaj sastava kopolimera na termičku stabilnost i utvrdili da termička stabilnost opada sa porastom udela dialkil-itakonata u kopolimeru [21].…”

unclassified

The effect of the accelerated aging on the mechanical properties of the PMMA denture base materials modified with itaconates

Spasojević¹,

Zrilić²,

Stamenković

et al. 2011

Hem Ind

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This study evaluated the effect of accelerated ageing on the tensile strength, elongation at break, hardness and Charpy impact strength in commercial PMMA denture base material modified with di-methyl itaconate (DMI) and di-n-butyl itaconate (DBI). The samples were prepared by modifying commercial formulation by addition of itaconates in the amounts of 2.5, 5, 7.5 and 10% by weight. After polymerization samples were characterized by FT-IR and DSC analysis while residual monomer content was determined by HPLC-UV. Accelerated ageing was performed at 70°C in water for periods of 7, 15 and 30 days. Tensile measurements were performed using Instron testing machine while the hardness of the polymerized samples was measured by Shore D method. The addition of itaconate significantly reduces the residual MMA. Even at the small amounts of added itaconates (2.5%) the residual MMA content was reduced by 50%. The increase of itaconate content in the system leads to the decrease of residual MMA. It has been found that the addition of di-n-alkyl itaconates decreases the tensile strength, hardness and Charpy impact strength and increases elongation at break. Samples modified with DMI had higher values of tensile strength, hardness and Charpy impact strength compared to the ones modified with DBI. This is explained by the fact that DBI has longer side chain compared to DMI. After accelerated ageing during a 30 days period the tensile strength decreased for all the investigated samples. The addition of DMI had no effect on the material ageing and the values for the tensile strength of all of the investigated samples decreased around 20%, while for the samples modified with DBI, the increase of the amount of DBI in the polymerized material leads to the higher decrease of the tensile strength after the complete accelerated ageing period od 30 days, aulthough after the first seven days of the accelerated ageing the values of hardness have increased for all of the investigated samples. Such behavior is explained as the result of the polymer chain relaxation. The values of Charpy impact strength decreased after accelerated ageing. The amount of added DMI have no affect on the decrease of Charpy impact strength after accelerated ageing, the decrease was similar as for pure PMMA. The decrease of Charpy impact strength increased as the amount of added DBI increases

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“…Poly(methyl methacrylate) (PMMA) is inert in the human body, has good biocompatibility, retains good mechanical properties for a long time and has been used to create denture bases , contact lenses, bone cement , inhalers . However, PMMA has several drawbacks, such as the presence of residual monomer susceptible to distortions as well as limitations in terms of mechanical properties, especially in terms of modulus of elasticity, flexural strength, impact and fatigue strengths . Residual monomer may leach out by diffusion from the material and irritate the surrounding tissue.…”

Section: Introductionmentioning

confidence: 99%

Dimethyl Itaconate Modified PMMA ‐ Alumina Fillers Composites With Improved Mechanical Properties

et al. 2018

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PMMA poly(methyl methacrylate) has a large spectrum of uses as bone cements, in dentistry as denture base materials and other industrial applications. One of the main drawbacks of these materials is the residual monomer that is proven allergen and irritant. It was shown that addition of dimethyl itaconate (DMI) to the PMMA denture base systems decrease the quantity of residual monomer but, also deteriorate mechanical properties. The addition of alumina fillers in the PMMA/DMI produced composite materials results in improved mechanical properties compared with pure PMMA and additionally reduces the level of residual monomer in the composition. POLYM. COMPOS., 40:1691–1701, 2019. © 2018 Society of Plastics Engineers

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Thermal behavior of poly(dimethyl itaconate) and poly(di‐n‐butyl itaconate) copolymerized with methyl methacrylate

Cited by 16 publications

References 29 publications

The influence of the shape and size of the AL2O3 particles on the flexural properties of the PMMA composite modified by the addition of dimethyl itaconate

The influence of the shape and size of the AL2O3 particles on the flexural properties of the PMMA composite modified by the addition of dimethyl itaconate

The effect of the accelerated aging on the mechanical properties of the PMMA denture base materials modified with itaconates

Dimethyl Itaconate Modified PMMA ‐ Alumina Fillers Composites With Improved Mechanical Properties

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