PMMA Content Research Articles

Dual-scale porous biphasic calcium phosphate gyroid scaffolds using ceramic suspensions containing polymer microsphere porogen for digital light processing

This study demonstrates a novel type of biphasic calcium phosphate (BCP) gyroid scaffolds featuring of gyroid macroporous structure and micropous BCP walls using poly(methyl methacrylate) (PMMA) microspheres as the porogen for ceramic digital light processing (DLP) technique. To tailor the microporosity of the BCP walls and the overall porosity of the dual-scale porous BCP scaffolds, the PMMA content with regard to the BCP powder was controlled in the range of 40 vol% to 70 vol%. After debinding at 600 °C and sintering at 1200 °C for 3 h, micropores were uniformly created throughout each BCP framework, while preserving 3−dimensional gyroid macroporous structures. As the PMMA content increased from 40 vol% to 70 vol%, the microporosity remarkably increased from 31.9 (±2.5) vol% to 55.2 (±1.4) vol%. This approach allowed the achievement of very high overall porosities (82.2–89.7 vol%) for the dual-scale porous scaffolds. However, all the scaffolds showed reasonable compressive strengths (0.8 MPa −2.1 MPa), which are comparable to those of cancellous bones.

Controlling the structure and density of PMMA bimodal nanocellular foam by blending different molecular weights

The bimodal cellular structure of foam is known to provide unique physical properties. In addition, it may help reduce foam density. This study proposes a simple method of creating a bimodal microcellular/nanocellular structure by blending PMMAs of different molecular weights using CO2 as the blowing agent. Nanofoam, with its low relative density, is the right candidate for thermal insulation, but obtaining it is challenging. Introducing micron-sized bubbles into homogeneous nanocellular structures may be one way to reduce the foam density and potentially not affect some of the properties. Beyond the bimodal structure, a transition from an ultramicrocellular to a nanocellular structure and from a closed-cell to an open-cell structure was observed. These transitions may be related to the relaxation time and weight percentage of non-entangled PMMA content. Formation of the bimodal nanocellular or open-cell structure may be predicted by the viscoelastic properties such as the relaxation time.

Ultrahigh energy storage density at low operating field strength achieved in multicomponent polymer dielectrics with hierarchical structure

Dielectric composites with excellent capacitive energy storage capabilities have great potential applications in energy storage capacitors operating efficiently at relatively low field strengths. Herein, unlike the traditional methods via the introduction of fillers including randomly distributed ceramic nanofibers and aligned nanowires arrays into the monolayer films are simply to increase the energy storage density (Ue), both Ue and charge–discharge efficiency (η) at low electric field strengths have been improved in tri-layered all-polymer films owing to the synergistic effect of multiple interbedded interfaces and deliberately modulation of linear dielectric poly(methyl methacrylate) (PMMA) contents. The effects of film structure on the energy storage capabilities have been comparatively discussed. Consequently, an ultrahigh Ue of 15 J cm−3 accompanied with great η of 76.5% has been delivered in the resulting tri-layered film via optimizing the PMMA content (30 wt%) of out layers at 350 MV m−1, surpassing the energy storage upper limits of the reported polymer dielectrics that show the Ue of ~12 J cm−3 and η of ~70% at comparable electric fields of 310–380 MV m−1. Along with high pulsed power density, multicomponent polymer dielectrics with hierarchically structure provide an effective paradigm for achieving the low operating field strength applications of capacitive energy storage devices with excellent energy storage capability.

Preparation and Tribological Properties of bionic materials with nacre shell structure

Ceramic materials have many advantages, such as high hardness, wear resistance, self lubrication in the process of friction, but there are also some inherent defects, such as brittle texture and poor toughness. By observing the microstructure of shell pearl layer, a kind of bionic composite ceramic with brick wall structure can greatly improve the natural defects of ceramic materials, and greatly expand the application range of ceramic materials. The tribological properties of materials are of great significance to the efficiency and service life of mechanical structures. Therefore, four kinds of ceramic composites with nacre shell structure with gradient concentration were prepared by freeze casting and standard polymerization, and the tribological properties of five materials were characterized. The experimental results show that when the loading load is large, the friction coefficient of material surface varies with the material With the increase of PMMA content, the friction coefficient of the material shows an upward trend.

Facile preparation of hierarchical porous poly(vinyl amidoxime) membranes as efficient gallium adsorbents

Gallium has important applications in new energy, semiconductor, and many other fields. Although a lot of work has been done in the field of preparing amidoxime resin to obtain gallium, there are still problems such as low adsorption capacity and relatively slow adsorption rate. In this paper, we report several high-performance porous amidoxime membranes (HPAOM). (Theoretical maximum adsorption capacity of gallium is 88.339 mg/g at 25 oC, and the fastest adsorption equilibrium time is only 16.9 min which prepared by non-solvent-induced phase separation.) We studied the effect of pore structure on the adsorption properties of porous amidoxime membranes. The comparative analysis of the adsorption kinetics of the porous amidoxime membrane prepared by adding different contents of pore-forming agent PMMA and spray method shows that the surface through-hole structure is very important for the improvement in the adsorption rate. The amidoxime film prepared by spraying also showed good selective adsorption. It is also found that it has good adsorption performance in a wide temperature range via the analysis of adsorption isotherm curve of amidoxime porous membrane. It provides a new method for the preparation of gallium adsorption materials with large adsorption capacity, fast adsorption speed, good selective adsorption of Ga and V, and wide adsorption temperature range.

Effects of grafting level and nano-clay loading on the properties of cured NR/PVA blends

The primary objective of this study is to improve the properties of NR/PVA blend which is cured using glutaraldehyde at low temperature. PMMA grafted on to NR with different grafting levels has been prepared and confirmed the grafting reaction by TEM, FT-IR and 1H-NMR. The effect of PMMA contents on NR with 1 phr of nano-clay on the mechanical properties and thermal stability has also been investigated. Significant enhancement in mechanical and thermal stability of the blends with higher grafting level on NR is observed. Activation energy of degradation has been determined from TGA curves by using the Horowitz-Metzger equation. The nature of dispersion and surface morphology has been studied using SEM-EDX technique. The experimental results reveal that the properties can be improved by adding functional group (i.e. PMMA) onto NR molecule.

Blending modification to porous polyvinylidene fluoride (PVDF) membranes prepared via combined crystallisation and diffusion (CCD) technique

PVDF membranes prepared by the combined crystallisation and diffusion (CCD) technique, a variation of ice templating, have shown permeation rates far superior to those made via conventional methods such as nonsolvent induced phase separation (NIPS) or thermally induced phase separation (TIPS). However, so far the smallest pore size achieved for PVDF membranes prepared by CCD is about 30 nm. In this study, the pore size of CCD PVDF membranes is reduced to 15 nm by blending poly(methyl methacrylate) (PMMA) into PVDF-dimethyl sulfoxide (DMSO) dope solutions without altering the operational conditions. Systemic study shows the pore size reduces when increasing PMMA concentration in the membranes; but after an initial drop compared to the pure PVDF membrane, the pure water flux doesn't decline with PMMA concentration. The effect of different molecular weights of PMMA (120 kDa and 35 kDa) was also investigated, where the results showed a smaller pore size for membranes prepared using the higher molecular weight PMMA. Scanning electron microscopy (SEM), cloud-point temperature measurement and Fourier transform infrared spectroscopy (FTIR) was used to characterise the membranes and help understand how PMMA affects membrane formation. From the evidence gathered, we attribute the effects of PMMA to the change in the number of nucleation centres, diffusional rates, as well as the gelation point based on a previously proposed CCD mechanism.

Preparation of agglomeration-free composite energetic microspheres taking PMMA-PVA with honeycomb structure as template via the molecular collaborative self-assembly

ABSTRACT We proposed with excitement a novel molecular co-assembly (MCSA) that can effectively overcome the agglomeration of energetic materials. Through the coordinated self-assembly of polymethyl methacrylate-polyvinyl acetate (PMMA-PVA) with honeycomb-like structure and nanoparticles, a controlled and orderly distribution of nitroamine explosive (cyclotetramethylenetetranitramine, HMX; cyclotrimethylenetrinitramine, RDX; and hexanitrohexaazaisowurtzitane, CL-20) structure was achieved, above all, resolving the agglomeration problem availably. The modification ability of PMMA to RDX, HMX, and CL-20 at different temperatures was simulated by Materials Studio, which provided guidance for the ambient temperature of collaborative self-assembly. In order to compare the priority of the morphology and performance, RDX/PMMA-PVA, HMX/PMMA-PVA, and CL-20/PMMA-PVA composite particles with the same PMMA content were also fabricated by water suspension coating method, respectively. Structural characterizations and thermal stability of the composites were systematically studied by scanning electron microscopy (SEM), X-ray diffraction (XRD), fourier-transform infrared (FT-IR) spectra, and differential scanning calorimeter (DSC). Moreover, the safety performance was analyzed by qualitative testing of impact sensitivity and friction sensitivity. The solid spherical PBX prepared via collaborative self-assembly all exhibited a perfect spherical structure, smooth, and flat coating, without any agglomeration. They had the same crystalline structure as the uncoated explosives, simultaneously demonstrating lower impact sensitivity and higher energy performance. The application of collaborative self-assembly technology has broken through the key technical bottleneck of the shell material being easy to form a separate phase in the desensitization coating of explosives, availably resolved the problems of particle exposure and low coverage during the coating, thus possessing vital significance for reference in the design and fabrication of PBXs with core-shell structure.

Design and Performance of Novel Self-Cleaning g-C3N4/PMMA/PUR Membranes.

In the majority of photocatalytic applications, the photocatalyst is dispersed as a suspension of nanoparticles. The suspension provides a higher surface for the photocatalytic reaction in respect to immobilized photocatalysts. However, this implies that recovery of the particles by filtration or centrifugation is needed to collect and regenerate the photocatalyst. This complicates the regeneration process and, at the same time, leads to material loss and potential toxicity. In this work, a new nanofibrous membrane, g-C3N4/PMMA/PUR, was prepared by the fixation of exfoliated g-C3N4 to polyurethane nanofibers using thin layers of poly(methyl methacrylate) (PMMA). The optimal amount of PMMA was determined by measuring the adsorption and photocatalytic properties of g-C3N4/PMMA/PUR membranes (with a different PMMA content) in an aqueous solution of methylene blue. It was found that the prepared membranes were able to effectively adsorb and decompose methylene blue. On top of that, the membranes evinced a self-cleaning behavior, showing no coloration on their surfaces after contact with methylene blue, unlike in the case of unmodified fabric. After further treatment with H2O2, no decrease in photocatalytic activity was observed, indicating that the prepared membrane can also be easily regenerated. This study promises possibilities for the production of photocatalytic membranes and fabrics for both chemical and biological contaminant control.

Preparation of cross-linked poly(methyl methacrylate) microspheres using an asymmetric cross-linker via dispersion polymerization and its application in light diffusers

Cross-linked poly(methyl methacrylate) (PMMA) microspheres have been successfully prepared by using the asymmetric cross-linker allyl methacrylate (AMA) via dispersion polymerization. The influence of the AMA amount and polymerization process on the PMMA particle size and morphology has been studied thoroughly. It was found that micron-sized, cross-linked PMMA particles with narrow size distributions could be obtained by a semi-continuous process with the asymmetric cross-linker AMA. The obtained micron-sized, cross-linked PMMA particles could be further used as a light diffusion agent in a polycarbonate matrix, and their light diffusion properties were significantly enhanced by increasing the gel content in the cross-linked particles. Moreover, the influence of the polymerization process, cross-linker content in PMMA and PMMA content in the polycarbonate matrix on light diffusion was carefully investigated. The results showed that the PMMA particles containing 5.0 wt% AMA, obtained by semi-continuous polymerization, had a higher haze and gel content and exhibited a better light diffusion effect than did the other particles.

Identification and quantification of selected plastics in biosolids by pressurized liquid extraction combined with double-shot pyrolysis gas chromatography-mass spectrometry.

The identification and quantification of selected plastics (polystyrene (PS), polycarbonate (PC), poly-(methyl methacrylate) (PMMA), polypropylene (PP), polyethylene terephthalate (PET), polyethylene (PE) and polyvinyl chloride (PVC)) in biosolids (treated sewage sludge) was performed by pressurized liquid extraction (PLE) combined with double-shot pyrolysis gas chromatography-mass spectrometry. Validation of the method yielded recoveries of between 85 and 128% (mean RSD 11%) at a linear range of between 0.01 and 2μg. The distribution of plastics within 25 biosolid samples from a single wastewater treatment plant in Australia was assessed. The mass concentration of PE, PVC, PP, PS and PMMA was between 0.1 and 4.1mg/g dry weight (dw) across all samples, with a total plastic concentration ƩPlastics of between 2.8 and 6.6mg/g dw (median=4.1mg/g dw). PE was the predominant plastic detected (mean concentration of 2.2mg/g dw), contributing to 50% of the total of all plastics. Overall, this study demonstrates that pressurized liquid extraction (PLE) combined with double-shot pyrolysis gas chromatography-mass spectrometry can be used to identify and quantify PE, PP, PVC, PS, and PMMA in biosolids.

Controllable synthesis of silica nanoparticle size and packing efficiency onto PVP‐functionalized PMMA via a sol–gel method

ABSTRACTThis study aimed to investigate synthesis and adsorption behavior of silica nanoparticles onto polyvinylpyrrolidone (PVP)‐functionalized poly(methyl methacrylate) under various conditions such as methanol/water ratio, ammonium hydroxide concentration, polymer contents, tetraethylorthosilicate contents, and total volume of solvent via sol–gel method. First, the copolymerization of methyl acrylate as a comonomer and 1‐dodecanethiol as a chain transfer agent increased the thermal stability of the product; however, the uniformity of the PMMA particles decreased because of the chain transfer reaction. Second, the adsorption behavior and size of silica nanoparticles could be controlled by adjusting the silica synthesis conditions. The adsorbed silica particle size was greatly influenced by the ammonium hydroxide concentration and the addition of water further enhanced the size increase. However, increasing the water content reduced the packing efficiency of the adsorbed silica particles. Increasing the PVP‐functionalized PMMA content at a fixed TEOS content linearly decreased the silica particle size. But TEOS concentration did not significantly affect the silica particle size. © 2020 Wiley Periodicals, Inc. J. Polym. Sci. 2020, 58, 662–672

Gradient crystallinity and its influence on the poly(vinylidene fluoride)/poly(methyl methacrylate) membrane‐derived by immersion precipitation method

ABSTRACTHerein, phase inversion poly(vinylidene fluoride)/poly(methyl methacrylate) (PVDF/PMMA) microporous membranes were prepared at various PMMA concentration by immersion precipitation method. Increment in the PMMA concentration has a significant influence in the PVDF membrane crystallinity, which is studied by differential scanning calorimeter, X‐ray diffractometer, and small‐angle X‐ray scattering analyses. Properties such as membrane bulk structure, porosity, hydrophilicity, mechanical stability, and water flux vary in terms of PMMA concentration. Porosity is increased, and tensile strength decreased when PMMA concentration is beyond 30 wt %. Thermodynamic instability during the liquid to solid phase separation and variation in the crystallinity has an intense effect on these membrane properties. Then, 70/30 blend membrane selected as optimum composition owing to the high porosity and pure water flux compared to other compositions. This membrane is modified with a composite filler derived from the graphene oxide and titanate crosslinked by chitosan. The antibacterial, antifouling, and bovine serum albumin separation studies reveal that the developed nanocomposite membrane is a potential candidate for the separation application. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48677.

Poly(methyl methacrylate)-induced Microstructure and Hydrolysis Behavior Changes of Poly(L-lactic acid)/Carbon Nanotubes Composites

Poly(L-lactic acid) (PLLA)-based composites exhibit wide applications in many fields. However, most of hydrophilic fillers usually accelerate the hydrolytic degradation of PLLA, which is unfavorable for the prolonging of the service life of the articles. In this work, a small quantity of poly(methyl methacrylate) (PMMA) (2 wt%–10 wt%) was incorporated into the PLLA/carbon nanotubes (CNTs) composites. The effects of PMMA content on the dispersion of CNTs as well as the microstructure and hydrolytic degradation behaviors of the composites were systematically investigated. The results showed that PMMA promoted the dispersion of CNTs in the composites. Amorphous PLLA was obtained in all the composites. Largely enhanced hydrolytic degradation resistance was achieved by incorporating PMMA, especially at relatively high PMMA content. Incorporating 10 wt% PMMA led to a dramatic decrease in the hydrolytic degradation rate from 0.19 %/h of the PLLA/CNT composite sample to 0.059 %/h of the PLLA/PMMA-10/CNT composite sample. The microstructure evolution of the composites was also detected, and the results showed that no crystallization occurred in the PLLA matrix. Further results based on the interfacial tension calculation showed that the enhanced hydrolytic degradation resistance of the PLLA matrix was mainly attributed to the relatively strong interfacial affinity between PMMA and CNTs, which prevented the occurrence of hydrolytic degradation at the interface between PLLA and CNTs. This work provides an alternative method for tailoring the hydrolytic degradation ability of the PLLA-based composites.

Gel electrolytes for partly covered photoelectrochromic devices

This work comprises a systematic experimental investigation of the effect of gel electrolytes in the properties of partly covered photoelectrochromic devices.A series of gel electrolytes was fabricated with different concentrations of poly(methyl methacrylate), PMMA, (Mw 120.000), ranging from 0% w/w to 45% w/w, dissolved in acetonitrile with 0.5 M lithium iodide, 0.005 M iodine and 0.5 M 4-tert-butylpyridine. The ionic conductivity of the electrolytes was in the order of 10−5 S/cm, decreasing with increasing PMMA concentration.These electrolytes were incorporated in partly covered photoelectrochromic devices. It was found that with increasing PMMA concentration, the power conversion efficiency of the incorporated solar cells decreases (from 1.7% to 0.5%), mostly due to the reduction of the short-circuit current. Regarding coloration kinetics, the photocoloration efficiency, PhCE of the devices was nearly constant up to 35% w/w concentration of PMMA, decreasing with further increase in the PMMA concentration. Of the electrolytes tested, that with 35% w/w concentration of PMMA was favored as it leads to devices with satisfactory electrical and optical characteristics.The long-term stability of devices with the aforementioned electrolyte was tested. A gradual decrease of the coloration depth with storage time was observed, due to losses at the WO3/electrolyte interface. A 35 nm thin ZnS barrier on top of WO3 suppressed these losses, leading to a stabilized contrast ratio of 2.1:1, 137 days post fabrication. Devices exposed to insolation in open-circuit and in short-circuit conditions remained operational for more than 200 days, without the stability problems related to liquid electrolytes.

Enhanced photoluminescence through Forster resonance energy transfer in Polypyrrole-PMMA blends for application in optoelectronic devices

Polypyrrole-PMMA (PPy-PMMA) blends have been prepared by chemical oxidative polymerization method. The band gap of all the blends lies in semiconductive range though PMMA is insulating in nature. Spherical agglomerated structure of the blends is observed from microstructural images. High photoluminescence (PL) intensity is obtained in PPy-PMMA blends even if PPy has low PL emission efficiency. The enhancement of PL emission intensity of the blends is due to Forster resonance energy transfer. Here an energy transfer occurs from donor PMMA to acceptor PPy which enhances the emission intensity of PPy. PL spectra show the increase in emission intensity with increase in concentration of PMMA in the blend up to a certain limit. Donor-donor interaction is also observed in the blend due to which the emission intensity of the blend having excess amount of PMMA suddenly falls down. Thus by tuning the amount of PMMA added in PPy matrix the PL intensity of the blend can be tuned and the blend can be used as a promising material for optoelectronic devices.

Preparation and Characterization of Poly(Methyl Methacrylate) (PMMA) Fibers by Electrospinning

Fibers are materials with advantageous properties such as lightweight material properties, has small pore size, and has high surface area, porosity,and permeability. An easy and simple method to prepare fibers is electrospinning. Using this method poly(methyl methacrylate) (PMMA) fibers were prepared. Several parameters include polymer concentration, solution flow rate, the distance of the nozzle tip to the collector, and the applied voltage were investigated to control the morphology, structure, and diameter of PMMA fibers. The Optimal electrospinning conditions for PMMA fibers production were a PMMA concentration is 8% (w/v), a power supply voltage is 20 kV, a distance of the tip of the nozzle to the ground collector is 15 cm, and a flow rate is 0.004 mL/min. The diameter distribution and morphology of the fibers were determined and characterized by Optical Microscopy and Scanning Electron Microscope (SEM), which showed that the produced fiber had an average diameter of 1.4925 µm, the contact angle of fiber PMMA is 125.307o and the spreading time of fibers PMMA is about 360 minutes

Estratégias e ações estratégicas nos Planos Municipais da Mata Atlântica: estudo documental em seis municípios

A Mata Atlântica é um dos biomas brasileiros mais ameaçados. Isso é um problema na medida em que os remanescentes desse bioma podem prestar inúmeros serviços ambientais à sociedade. A legislação brasileira permite que municípios elaborem Planos Municipais de Conservação e Recuperação da Mata Atlântica (PMMA), visando a contribuir nesse contexto. O objetivo deste trabalho é estudar as estratégias e ações propostas nos Planos Municipais de Conservação e Recuperação da Mata Atlântica (PMMA) em seis municípios brasileiros. O trabalho é de pesquisa documental e se baseia na análise de conteúdo dos PMMAs nos seis municípios. A análise identificou as categorias de ações e de estratégias a partir dos planos de ação que constam nos documentos. Foram analisadas também características de planejamento como definição de responsáveis, prazos, metas e recursos. Foram identificadas como principais categorias de estratégias: unidades de conservação; arborização urbana; atuação em áreas de preservação permanente; legislação; captação de recursos; educação ambiental; ação política e institucional; ação sobre vetores de pressão; obtenção de novas informações; e economia verde. As ações propostas são, em geral, consistentes com recomendações técnicas e de gestão, no entanto em alguns casos e em alguns temas parecem mais um brainstorming de ideias, sem uma priorização clara, nem definição de responsabilidades, prazos e metas quantitativas. Há necessidade de se trazer um equilíbrio entre a especificidade desses elementos para dar direção e segurança na implantação e flexibilidade que permite adaptar o plano, que tende a ser visto como algo processual e não estático, ao longo do tempo. Ficam como desafios entender as razões para as deficiências no planejamento da implantação, a captação de recursos e o envolvimento de setores produtivos na elaboração e no financiamento das ações.

Morphological effects on dielectric properties of poly(vinylidene fluoride-co-hexafluoropropylene) blends and multilayer films

Compared with chemical modification of ferroelectric poly (vinylidene fluoride) (PVDF) for electric energy storage, polymer blends, whether miscible or immiscible, represent a much easier approach to suppress the ferroelectricity of PVDF. In this study, we explored both miscible [i.e., poly (methyl methacrylate) or PMMA] and immiscible (i.e., polycarbonate or PC) blends with poly (VDF-co-hexafluoroethylene) [P(VDF-HFP)], as well as the PC/P(VDF-HFP) multilayer films. For miscible PMMA/P(VDF-HFP) blend films, the addition of PMMA significantly decreased the crystallinity of P(VDF-HFP). At a high PMMA content of ca. 40 wt%, the stretched PMMA/P(VDF-HFP) blend films started to exhibit the linear dielectric behavior with suppressed ferroelectricity. For the immiscible PC/P(VDF-HFP) blend films, a high PC content of ∼50 vol% was required to suppress the ferroelectricity in P(VDF-HFP). Instead, the PC/P(VDF-HFP) multilayer films started to show linear hysteresis loops when the content of P(VDF-HFP) was only 30 vol%. More importantly, the PC/P(VDF-HFP) multilayer films exhibited significantly higher breakdown strength than the blend films. This could be attributed to the perpendicular interfaces (with respect to the applied electric field), which serve as effective blocks for hot electrons injected from the metal electrodes to pass through the film. From this study, compared to conventional miscible and immiscible blends, multilayer films are promising for next generation film capacitors, aiming to achieve high temperature tolerance, high energy density, and low loss simultaneously.

PREPARATION AND FTIR STUDIES OF PMMA/PVC POLYMER BLENDS, PVC-g-PMMA GRAFT COPOLYMERS AND EVALUATING GRAFT CONTENT

This study presents the qualitative and quantitative analyses of Fourier Transform Infrared (FTIR) spectra of poly(methyl methacrylate)/poly(vinyl chloride) blends (PMMA/PVC), as well as PVC-g-PMMA graft copolymers. Graft copolymerizations of methyl mathacrylate (MMA) onto PVC macromolecules were carried out mixture of cyclohexanone/N,N-dimethylformamide as solvents, dibenzoyl peroxide as initiator and nitrogen medium. FTIR spectra of PMMA/PVC blends showed that there were molecular interactions between C=O groups of PMMA and C-Cl groups of PVC. Assignments of infrared absorption bands for specific groups of PMMA/PVC blends have been contributed. Using regression method, linear calibration curve between PMMA mole content and peak areas of C=O groups in FTIR spectra of the blends has been found when C=O peak areas were multiplied by an appropriate factor. PMMA grafted content and total PMMA formed content in PVC-g-PMMA graft copolymers have been evaluated. The results showed that grafted PMMA content was increased since PVC was initiatly dechlorinated by NaOH solution. The grafted PMMA content and total formed PMMA content were 5.05 wt.% and 11.25 wt.% respectively when MMA monomers were grafted onto neat PVC and modified PVC molecules.