Polymerization of methyl methacrylate. Medical search. Frequent questions

The primary use of MMA comes from its role as a monomer in the polymerization of polymethyl methacrylate (PMMA), a highly transparent and durable polymer. (pcimag.com)
PMMA is synthesizable in solution, emulsion or bulk polymerization. (pcimag.com)
PMMA (polymethyl methacrylate) - better known as Plexiglas or acrylic - was once considered the best material for contact lenses. (allaboutvision.com)
PMMA refers to a synthetic resin - or plastic - that is created through the process of polymerization. (allaboutvision.com)
In this current research, two immiscible polymers, poly(methyl methacrylate) (PMMA) and poly(benzyl methacrylate) (PBzMA) with controlled molecular weight, bearing terminal furan-maleimide groups, are prepared via Reversible Addition-Fragmentation chain transfer (RAFT) polymerization. (aps.org)
A poly(methyl methacrylate) (PMMA) brush is blanket grown from a Si(100) surface and selectively removed from the lightly doped (∼10 18 cm −3 ) regions using a doping-selective KOH etch. (aip.org)
An effortless chemisorption access for the planning of nanocomposites containing a semiconductor ZnO nanoparticles and poly(methyl methacrylate) (PMMA) is demonstrated. (ump.edu.my)
Then, a reserved radical polymerization of methyl methacrylate in the attendance of Zinc oxide-thiol (ZnO-SH) and butyrolactam produced PMMA-g-ZnO nanocomposites. (ump.edu.my)
PMMA-gPLLA [PMMA: poly(methyl methacrylate)] was also synthesized by: (a) the reaction of CpTiCl 3 with 2-hydroxy ethyl methacrylate, HEMA, to give the Ti-HEMA-catalyst, (b) the ROP of LLA to afford a PLLA methacrylic-macromonomer, and (c) the copolymerization (conventional and ATRP) of the macromonomer with MMA to afford the final graft copolymer. (edu.sa)
The iron hydroxyl phosphate nanoparticles were then incorporated into poly (methyl methacrylate) (PMMA) by in situ radical polymerization. (iafss.org)
Polymethylmethacrylate-silver (PMMA/Ag) nanocomposite is synthesized by irradiating the solution of silver ions in methylmethacrylate monomer by γ-ray. (nstri.ir)

Methyl methacrylate (MMA) is an essential monomer for many acrylic-based polymers, and its extensive range of applications include sealants, adhesives, exterior paints and coatings, and shatter-resistant panels for windows and bathtubs. (pcimag.com)
In this application of monitoring the methyl methacrylate polymerization, the ACOMP system uses an ultraviolet absorption detector (UV) to measure the concentration of monomer throughout the polymerization. (pcimag.com)
These results can also be used to determine the true polymerization kinetics and reactivity ratios of the monomer. (pcimag.com)
Polymerization of a vinyl monomer were attempted by using radicals on the surface of inorganic solids produced by grinding operation. (nii.ac.jp)
The mechanochemical polymerization was performed by grinding samples in methyl methacrylate monomer solvent under nitrogen atmosphere. (nii.ac.jp)
Effect of polymerization temperature and time on the residual monomer content of denture base polymers. (niom.no)
With the heat-cured denture base resins, a curing cycle at a polymerization temperature of 70 degrees C followed by a period at 100 degrees C significantly reduced the residual monomer content of the polymer when compared with a resin cured at 70 degrees C only. (niom.no)
Cast acrylic is made by pouring hot liquid methyl methacrylate monomer and a catalyst into a mould (or 'cast') between two sheets of glass. (perspex.co.uk)
The two stable radicals behave quite differently with respect to the polymerization of the studied monomer. (arxiv.org)
In contrast, TEMPO effectively capture monomer radicals manifesting itself as a killer of the polymerization thus providing the appearance of the induction period in practice. (arxiv.org)
Compounds containing different percentages of methyl methacrylate monomer and polymethyl methacrylate were prepared. (ac.ir)
They are produced by the polymerization of a vinylidene chloride monomer with other monomers such as acrylic esters and unsaturated carboxyl groups. (intratec.us)
In this method, polymerization of the methylmethacrylate monomer and the silver ion reduction occurred simultaneously. (nstri.ir)

Methyl methacrylate is mainly used in the preparation of polymethyl methacrylate, a bone cement material. (sigmaaldrich.com)
9. C. Damm, "Silver ion release from polymethyl methacrylate silver nanocomposite," Polym. (nstri.ir)

Specifically, conjugated polymer poly(fluorene- alt -(4,7-bis(hexylthien)-2,1,3-benzothiadiazole)) (PFTB) was utilized as a fluorescent backbone and a macroinitiator for grafting with polycaprolactone (PCL) and poly[oligo(ethylene glycol) methyl ether methacrylate] (POEGMA) blocks via ring opening polymerization (ROP) and atom transfer radical polymerization (ATRP) successively, resulting in highly fluorescent polymer bottlebrushes, PFTB- g -(PCL- b -POEGMA). (rsc.org)
One-half-inch-diameter magnetite pellets containing less than 5 wt-pct poly(methyl methacrylate) gave compressive strengths in excess of 500 lb after polymerization at 80 deg c (176 deg f) and annealing at 200 deg c (392 deg f). (cdc.gov)
The compressive strength of partially oxidized magnetite pellets (500 deg c (932 deg f) increased from about 100 lb to over 1,000 lb after impregnation with less than 5 wt-pct poly(methyl methacrylate). (cdc.gov)
Poly(ethylene glycol) methyl ether methacrylate (PEGMA) is a nonlinear analog of polyethylene glycol (PEG). (sigmaaldrich.com)
6. Y. Nakao, "Noble metal solid sols in poly(methyl methacrylate)," J. Colloid. (nstri.ir)
Yu, F. Yue'e, "Synthesis and characterization of poly (methylmethacrylate)/OMMT nanocompos-ites by γ-ray irradiation polymerization," Radiat. (nstri.ir)

Long oil length alkyd resins were synthesised by two-stage alcoholysis-polyesterification reaction with variation of phthalic anhydride (PA) and maleic anhydride (MAH) proportion and further polymerised with methyl methacrylate (MMA) and butyl acrylate (BA) via miniemulsion polymerisation. (european-coatings.com)
Grafting polymerization of methyl methacrylate-co-ethyl acrylate was applied to modify the surface of acid soluble collagen (ASC). (hw.ac.uk)
This is the peer reviewed version of the following article: Bazrafshan, Z. and Stylios, G. K. (2017), One-pot approach synthesizing and characterization of random copolymerization of ethyl acrylate-co-methyl methacrylate with broad range of glass transition temperature onto collagen, which has been published in final form at http://dx.doi.org/10.1002/pen.24688. (hw.ac.uk)
By adding two or more functional acrylate or methacrylate monomers it is expected that cross-linking may occur partially in leading to their chemical and thermal resistance improvements. (ac.ir)
It is also possible to increase their adhesion strength by adding acidic acrylate or acidic methacrylate additives. (ac.ir)

The aim of this study was to investigate the effect of polymerization time and polymerization temperature on the residual methyl methacrylate (MMA) content of two heat-cured and two autopolymerized denture base polymers. (niom.no)
The results of this study suggest that the polymerization temperature and polymerization time considerably affect the residual MMA content of denture base polymers. (niom.no)
The first experience of virtual free-radical polymerization of a set of vinyl monomers in the framework of the digital twins (DTs) concept (Polymers 2023, 15, 2999) is extended to methyl methacrylate, copolymerized with small additives of stable radicals such as fullerene C60 and TEMPO. (arxiv.org)
The synthetic strategy involved: (a) the preparation of OH-end-functionalized homopolymers or diblock copolymers by anionic polymerization, (b) the reaction of the OH-functionalized polymers with CpTiCl 3 to give the corresponding Ti-macrocatalyst, and (c) the ROP of LLA to afford the final block copolymers. (edu.sa)
Acrylic adhesives based on methyl methacrylate are thermoplastic polymers due to their linear polymerization. (ac.ir)

Somewhat lower pellet strengths were obtained with methyl methacrylate- styrene and styrene -acrylonitrile copolymers. (cdc.gov)
Polyvinylidene Chloride Copolymers are manufactured via two commercial processes of similar relevance: suspension or emulsion polymerization. (intratec.us)

More important, higher oligomers underwent phase separation during attempted cross-linking of styrene, and gave nonuniform products with methyl methacrylate. (usm.edu)
These materials (at the 5% level) gave clear, hard, insoluble products with no phase separation for both styrene and methyl methacrylate bulk thermal and photoinitiated polymerizations. (usm.edu)

Both techniques involve polymerization of vinylidene chloride and the comonomer(s), subsequently dewatering by filtering or centrifuging the polymer and drying the resultant wet solids (for polymer powder preparation). (intratec.us)

He is the author of Living Anionic Polymerization of Methyl Methacrylate, a book detailing his research on Living anionic polymerization. (wikipedia.org)
The BCP is synthesized via sequential "living" anionic polymerization protocols and analyzed by 1H-NMR spectroscopy, size exclusion chromatography, and differential scanning calorimetry. (bsz-bw.de)

Bostik's SAF & FIT range of innovative structural Methyl Methacrylate Adhesives also referred to MMA adhesives, are two-part reactive acrylic adhesives. (bostik.com)
For which applications Structural Methyl Methacrylate Adhesives are designed? (bostik.com)

In simple terms, this means that a source material (called methyl methacrylate) is placed into a mold in combination with a catalyst. (allaboutvision.com)

This article describes how ACOMP was utilized to successfully monitor and characterize the free radical solution polymerization of MMA. (pcimag.com)
The synergistic antioxidant effect of VE or L-ascorbyl 2,6-dibutyrate (ASDB, an ascorbate derivative) with the flavonoids (-)-epicatechin (EC) and (-)-epigallocatechin gallate (EGCG) was investigated using the induction period method in the polymerization of methyl methacrylate initiated by thermal decomposition of benzoyl peroxide (an oxygen-centered radical, PhCOO●) under nearly anaerobic conditions. (iiarjournals.org)

3)Although The activity of radicals of all samples for polymerization reaction can be recognized, the activity differs according to samples ground. (nii.ac.jp)

Publications] MASAHIRO HASEGAWA: 'Surface Modification of Fine Inorganic Powder by Use of Mechanochemical Polymerization' Kagaku Kogaku Ronbunshu. (nii.ac.jp)
Technovit ® 4006 "HIGH CLEAR" is a highly transparent 2-component embedding medium based on methyl methacrylate in powder and liquid form. (ebsciences.com)

The main limitations of direct restorations with composite resins are polymerization shrinkage, microleakage, postoperative sensitivity 2 , low wear resistance and technique sensitivity, which limits its use in large Class II cavities and teeth with destroyed crowns 3 . (bvsalud.org)

The virtualization of chemical processes is based on the assumption of basic chain reactions that lay the foundation of polymerization. (arxiv.org)
In the current study, a set of elementary reactions, covering the initial stage of the polymerization, is considered. (arxiv.org)

The activity of radicals for polymerization and the relationship between polymerization and grinding rates were investigated. (nii.ac.jp)

The team led by him at the National Chemical Laboratory conducted research on olefin polymerization using Ziegler Natta catalysts which opened a new school of research in the topic. (wikipedia.org)

In these situations, indirect aesthetic resin or ceramic restorations are much more indicated because of their advantages, such as less polymerization shrinkage (restricted to resinous cement), better mechanical properties, better contact and proximal contour, excellent occlusal morphology and greater aesthetic resources 4-5 . (bvsalud.org)

Bostik MMA enables fast and visual mixing control with black hardener, and polymerisation mixing control with white hardener. (bostik.com)
Technovit ® 4006 can be used in a variety of ways, thanks to the fast polymerisation time, and is ideally suited for routine work. (ebsciences.com)

SAF 30-5 is made of patented methacrylate adhesives and shows unmatched performance in term of resistance and flexibility. (bostik.com)

While rate of polymerization and gelation increased with increasing oligomer concentration, strength and toughness decreased. (usm.edu)

Methacrylate adhesives are used in a wide range of assembly and manufacturing operations. (bostik.com)

In a more recent attempt at measuring micromixing, Atiqullah and Nauman [3] applied gradient elution thin-layer chromatography to the styrene - methyl methacrylate system. (aiche.org)
Somewhat lower pellet strengths were obtained with methyl methacrylate- styrene and styrene -acrylonitrile copolymers. (cdc.gov)

9. High performance protein microarrays based on glycidyl methacrylate-modified polyethylene terephthalate plastic substrate. (nih.gov)
The reaction product of bisphenol A and glycidyl methacrylate that undergoes polymerization when exposed to ultraviolet light or mixed with a catalyst. (nih.gov)

The invention relates to the preparation of dialkyl magnesium compounds by ethylene polymerization and uses thereof. (justia.com)
Among the polyolefins, polyethylene PE, a saturated aliphatic polymer originating from ethylene polymerization, constitutes a target of choice. (justia.com)
No. 5,109,085) on the other hand, developed the use of Ra Cp 2 MCl 2 Li(OEt 2 ) 2 as a pre-catalyst ( Ra Cp represents an optionally substituted cyclopentadienyl) in ethylene polymerization reactions, a compound which will be converted to a catalyst at the time of the polymerization reaction. (justia.com)

So, the process by which these small units (simple molecules or monomers) transform into a polymer is called the process of polymerization or simply polymerization. (vedantu.com)
This study is concluded with recommendations for further research in the area of penultimate effect in propagation, copolymers using monomers that will give a larger composition drift, and studies on the method of UV analysis of copolymer compositions taking the absorption of methyl methacrylate into consideration. (wmich.edu)
The first experience of virtual free-radical polymerization of a set of vinyl monomers in the framework of the digital twins (DTs) concept (Polymers 2023, 15, 2999) is extended to methyl methacrylate, copolymerized with small additives of stable radicals such as fullerene C60 and TEMPO. (arxiv.org)

1. It is mainly used as polymerization initiator for acrylic resin, vinyl acetate resin, methyl methacrylate and some ene products, etc. (starskychemical.com)

Surfactants are used in emulsion polymerization (EP) formulas at less than two percent of the total mass, but they play an important role in the EP processes. (coatingsworld.com)
The emulsion polymerization process is commonly applied to synthesize nanospheres between 30 nm to 300 nm in diameter. (coatingsworld.com)
The seed formula used for the emulsion polymerization to demonstrate the efficiency of the EP-3 versus the competitor product can be seen in Table 2. (coatingsworld.com)

Before understanding the polymerization, let us understand what polymers are. (vedantu.com)
We generally use two major methods for preparing polymers (methods of polymerization). (vedantu.com)
The condensation polymers like dacron, bakelite, and nylon are formed by this polymerization process. (vedantu.com)

Although at relatively lower polymerization rates, the addition of an alkyl halide to the system leads to a better control of the polymerization as reflected by the improved molecular weight distribution and chain-end functionality. (itu.edu.tr)
He is known for his pioneering work on alkylation of tertiary alkyl halides with trialkylaluminum and olefin polymerization and holds the highest number of US patents by an Indian working outside the US. (wikipedia.org)

Hydroquinone acts as a polymerization inhibitor for some chemicals, such as acrylic acid and methyl methacrylate. (nih.gov)
EP-3 and EP-6 are highly functional acrylic latexes containing butyl acrylate (BA), methyl methacrylate (MMA), and glacial acrylic acid (GAA). (coatingsworld.com)

A versatile initiating system composed of camphorquinone/benzhydrol and (CuBr2)-Br-II/N,N,N ',N '',N ''-pentamethyldiethylenetriamine for photoinduced reverse atom transfer radical polymerization has been developed. (itu.edu.tr)

In the condensation or step-growth polymerization, a stepwise intermolecular condensation takes place through a series of independent reactions. (vedantu.com)

Industrial hygiene surveys were conducted over two days in April 1993, and over one day in August 1993, to measure the airborne concentration of several chemicals used in the laboratory, including methylene chloride, methyl methacrylate, cyanoacrylates, and various organic solvents. (cdc.gov)
The polymerization is initiated by a bifunctional peroxide, 1-di (tert-butylperoxy) cyclohexane (BPCH) in an organic solvent: anisole. (confex.com)
The invention provides a continuous process suitable for use in a coupled polymerization and extrusion process, which does not require the use of an organic solvent in the polymerization medium. (bringingeuropecloser.com)

Behavior and Limitations of Isothermal Frontal Polymerization of Methy" by LL Lewis, A Perryman et al. (usm.edu)

Mecklenburgh [2] used a Free Radical polymerization system to study the impact of mixing in various reactor configurations. (aiche.org)
The formation of grit and coagulum and reactor build-up begins due to various reasons and with various durations of the EP process, or due to poor stability of the latex, giving rise to flocculation and formation of aggregates and hard to clean reactors.3,4 To provide effective electrostatic and steric stabilization, novel surfactants were synthesized and evaluated in the emulsion polymerizations. (coatingsworld.com)
In this work, the calorimeter reactor RC1-RTCal of Mettler Toledo with capacity of 500mL was used to study the kinetics of the radical solution homopolymerization in isothermal conditions, of Dodecyl MethAcrylate (DDMA) and Methyl MethAcrylate (MMA). (confex.com)
To achieve this aim, it was proposed to study the mathematical model that describes the system, using Matlab software to simulate and optimize the operational conditions of methyl methacrylate (MMA) polymerization in an industrial reactor. (edu.br)
The virtue of the method of pulse electrospinning in comparison with classical electrospinning is … EXAMPLE 2 An agitated polymerization reactor having a total capacity of about 3,800 parts by weight of water is used in this preparation. (bringingeuropecloser.com)

The radical-scavenging activity was determined using the induction period method in the methyl methacrylate-azobisisobutyronitrile (AIBN) polymerization system under nearly anaerobic conditions. (iiarjournals.org)

Because of their stochastic nature, polymerization processes generate mixtures of chains that differ from each other in their molecular architecture. (aiche.org)

The radical polymerization is different from other process of chain polymerization by its ease of implementation. (confex.com)
2) Reacted with a catalyst in a conventional suspension or solution polymerization process to form a polyacrylonitrile plastic. (insightsolutionsglobal.com)

His researches along with Kennedy is reported to have assisted in widening the knowledge base on the mechanism of carbocationic polymerization and led to the latter-day techniques of controlled and living carbocationic polymerization. (wikipedia.org)
These differences are mostly determined by the interaction among the various steps of the polymerization mechanism. (aiche.org)

There are a wide variety of techniques that allow the monitoring of the free radical polymerization kinetics. (confex.com)
Most of the kinetic studies of the radical polymerization reactions, found in the literature based on thermal analysis technical, use the differential scanning calorimeter DSC [3]. (confex.com)
Handbook of radical polymerization. (confex.com)
1. Zhu S, Tian Y, Hamielec AE, Eaton DR. Radical trapping and termination in free-radical polymerization of methyl methacrylate. (bvsalud.org)

A simplified model of the chemical polymerization based on three main steps (initiation, propagation and termination) was used. (confex.com)

Most polyolefins are produced by polymerization using a catalytic system. (justia.com)
An improved drug delivery system was developed via reversible addition fragmentation chain transfer (RAFT) polymerization. (cheric.org)

In fact, a coordinating solvent such as an ether, tetrahydrofuran (THF), is necessary during the preparation and this solvent is incompatible with the polymerization. (justia.com)

In 1984, 46% of hydroquinone consumption was in photographic chemicals, 35% in rubber and other antioxidants, 11% in polymerization inhibition, and the remaining 8% in "other" (HSDB, 2005d). (nih.gov)

In conclusion, the plasma enhanced chemical solution deposition is compared to the classical thermal polymerization of MMA. (aps.org)

Solid coatings are formed out of the liquid phase from methyl methacrylate via dielectric barrier discharge. (aps.org)
The solid state polymerization (SSP) of recycled PET from 2L bottles was investigated. (4spe.org)

Anatomy4

Chemicals and Drugs53

Analytical, Diagnostic and Therapeutic Techniques and Equipment21

Phenomena and Processes13

Disciplines and Occupations1

Technology, Industry, Agriculture30

Named Groups1

Health Care2

PMMA11

Monomer13

Polymethyl2

Poly6

Acrylate5

Polymers5

Copolymers2

Styrene2

Polymer1

Anionic2

Structural2

Catalyst1

Radical2

Reaction1

Powder2

Resins1

Reactions2

Radicals1

Chemical1

Properties1

Fast2

Made1

Rate1

Range1

Styrene2

Glycidyl methacrylate2

Ethylene3

Monomers3

Resin1

Emulsion polymerization3

Polymers3

Alkyl2

Acrylic2

Atom1

Condensation1

Organic3

Frontal Polymerization1

Reactor5

Induction period1

Chains1

Process2

Mechanism2

Radical polymerization4

Termination1

System2

Solvent1

Chemicals1

Solution1

Solid2