Grafting Of Glycidyl Methacrylate Research Articles

Polyfunctional phytic acid-based reactive diluent for UV-curable coating with improved flame-retardant performance and toughness

The shortcomings of oligomer resin, including its high viscosity, easy brittleness and lack of flame-retardant performance, obviously limit the application fields of the related coatings. Herein, a UV-curable polyfunctional biomass-based diluent (PAGMA) is conveniently and effectively synthesized by grafting glycidyl methacrylate onto phytic acid. The structural characterization of PAGMA is identified by FT-IR and 1H NMR tests. Moreover, PAGMA diluent is mixed with UV-curable epoxidized soybean oil-based acrylic resin (ESO-based resin), and the influences of PAGMA on the viscosity of ESO-based resin, the mechanical property and the flame-retardant efficiency of the related films are systemically researched. All results demonstrate that the viscosity of composite resin (R2 resin) with 20 wt% PAGMA reduces by 39.2% compared with that of ESO-based resin. And the toughness of the cured film (F2 film) prepared by R2 resin achieves about 1.18 MJ·m-3, which is 2.26 times as large as the cured film prepared without PAGMA (F0 film). Furthermore, the limiting oxygen index value of F2 film improves by 31.2% compared with that of F0 film, and the F2 film can self-extinguish after being ignited. Thus, the prepared polyfunctional biomass diluent can be applied to UV-curable coatings to decline the coating viscosity and enhance the comprehensive properties of coating films, which assists in broadening the application fields of UV-curable materials, especially in fire prevention.

Boron Adsorption Using NMDG-Modified Polypropylene Melt-Blown Fibers Induced by Ultraviolet Grafting.

Boron is in high demand in many sectors, yet there are significant flaws in current boron resource utilization. This study describes the synthesis of a boron adsorbent based on polypropylene (PP) melt-blown fiber using ultraviolet (UV)-induced grafting of Glycidyl methacrylate (GMA) onto PP melt-blown fiber, followed by an epoxy ring-opening reaction with N-methyl-D-glucosamine (NMDG). Using single-factor studies, grafting conditions such as the GMA concentration, benzophenone dose, and grafting duration were optimized. Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), X-ray diffraction (XRD), and water contact angle were used to characterize the produced adsorbent (PP-g-GMA-NMDG). The PP-g-GMA-NMDG adsorption process was examined by fitting the data with different adsorption settings and models. The results demonstrated that the adsorption process was compatible with the pseudo-second-order model and the Langmuir model; however, the internal diffusion model suggested that the process was impacted by both extra- and intra-membrane diffusion. According to thermodynamic simulations, the adsorption process was exothermic. At pH 6, the greatest saturation adsorption capacity to boron was 41.65 mg·g-1 for PP-g-GMA-NMDG. The PP-g-GMA-NMDG preparation process is a feasible and environmentally friendly route, and the prepared PP-g-GMA-NMDG has the advantages of high adsorption capacity, outstanding selectivity, good reproducibility, and easy recovery when compared to similar adsorbents, indicating that the reported adsorbent is promising for boron separation from water.

Radiation-induced grafting of glycidyl methacrylate onto natural cotton fibers and trimethylamine modification for p-nitrophenol adsorption

The pre-irradiation grafting procedure was employed to achieve the grafting of natural cotton fibers (Cot) with glycidyl methacrylate (GMA). It was found that the extent of grafting (DG) of GMA was influenced by the dose of radiation that was absorbed; increased doses led to larger DGs. Dose of 10 kGy was chosen for the preparation of the GMA grafted cotton (Cot-g-GMA); this provided a DG of 200%. Subsequently, (Cot-g-GMA) was modified using Trimethylamine (TMA). In order to describe the physiochemical qualities of the fibrous adsorbent, the fibrous adsorbent was characterized with the use of FTIR, FESEM, XRD, TG-DTG, and pHpzc. In addition, the designed TMA(Cot-g-GMA) adsorbent was utilized to examine the adsorption of p-nitrophenol from aqueous solution. An examination was made of the adsorption kinetics and isotherm in order to permit the elucidation of the adsorption of p-nitrophenol behavior. In accordance with the findings emerging from this work, p-nitrophenol adsorption was described with a pseudo-second order. Moreover, the fact that the Langmuir isotherm model was the best fit was determined by the isotherm analysis. In relation to adsorption capacity, the maximum capacity achieved was 180 mg/g at 298 K. The spontaneous and exothermic nature of adsorption was identified by thermodynamic analysis. Specifically, it is evident that adsorbent can be readily reproduced and recycled with no accompanying loss of adsorptive performance in the alkaline medium. These findings indicate the potential of the fibrous bio adsorbent as a means of eliminating p-nitrophenol from wastewater.

Synthesis and Properties of a Novel Thermally Conductive Pressure-Sensitive Adhesive with UV-Responsive Peelability.

Thermally conductive pressure-sensitive adhesive (PSA) has received a great amount of attention in recent years, but the traditional PSA hardly loses adhesion properties after UV irradiation or heating. Therefore, endowing thermally conductive adhesive with UV-responsive peelability becomes a design strategy. Herein, vinyl-functionalized graphene (AA-GMA-G) is prepared by modifying graphene with acrylic acid and subsequently reacting with glycidyl methacrylate. Then, the UV-curable acrylate copolymer is synthesized by grafting glycidyl methacrylate. Finally, the novel thermally conductivity PSA with UV-responsive peelability is obtained by blending the copolymer with AA-GMA-G and photoinitiator. The results show that the PSA at 2wt% AA-GMA-G loading exhibits an excellent thermal conductivity (0.74Wm-1 K-1 ) and a relatively strong peel strength, increasing by 15% compared with pristine graphene/PSA. Interestingly, the peel strength of AA-GMA-G/PSA can achieve a dramatic drop after UV treatment, and the decrease rate is 96.7%. Therefore, the novel thermally conductive PSA with UV-responsive peelability has potential applications in certain electronic devices.

Constructing stable “bridge” structures with compatibilizer POE‐g‐GMA to improve the compatibility of starch‐based composites

AbstractWith the development of degradation technologies such as chemical‐catalysis and bio‐catalysis, starch‐polyethylene (PE) composites have been revitalized as industrial packaging materials. However, starch and PE suffer from interfacial incompatibility. In this study, poly(octene ethylene) grafted glycidyl methacrylate (POE‐g‐GMA) was added at relatively low amounts (0–7 wt%) to construct robust structures between thermoplastic starch (TPS) and low‐density polyethylene (LDPE). Tensile strength increased by 36.39% with the addition of 1 wt% POE‐g‐GMA. Meanwhile, a smooth surface was observed by SEM, and a fibrillar cross‐linked structure appeared on the fractural surface of the blend. POE‐g‐GMA formed a stable “bridge” at the interface between TPS and LDPE, which increased the thermal stability of the blend as well. The crystallinity of LDPE increased from 20.5% (without addition) to 32.8% (with 1 wt% addition), whereas the average crystallite size decreased slightly. The optimal POE‐g‐GMA content was found to be 1 wt% based on mechanical and thermal measurements. The results of this study can provide a reference for improving the interfacial compatibility of biopolymers and fossil‐fuel‐based polymers.

Effect of Tea Polyphenols on the Melt Grafting of Glycidyl Methacrylate onto Polypropylene.

It is considered to be one of the most effective strategies to prepare functionalized polypropylene (PP) materials via the melt grafting of polar monomers onto PP chains. However, the grafting efficiency of functional monomers is generally low. To achieve a high grafting efficiency, we explored the effect of tea polyphenols (C), which are good free radical scavengers, on the melt grafting of glycidyl methacrylate (GMA) onto PP chains initiated by dicumyl peroxide (DCP). Specifically, 0.5~3 wt% of tea polyphenols (C) were introduced to the PP/DCP/GMA melt blending system. The morphology, melt flow rate (MFR), thermal and mechanical properties of tea polyphenols (C) incorporated PP/DCP/GMA blends were investigated systematically. The results showed that the proper amount of tea polyphenols (C) (0.5~2 wt%) promoted the grafting of GMA. Unexpectedly, the PP backbone suffered from more severe degradation with the addition of tea polyphenols (C). The phenomena were ascribed to the reaction between phenolic hydroxyl groups of tea polyphenols (C) and epoxy groups of grafted GMA, which was revealed by the FTIR results. In addition, according to DSC and the tensile test, the co-grafting of GMA and tea polyphenols (C) improved the crystallization ability, yield strength and Young's modulus of the PP matrix.

Effective adsorption of bovine serum albumin by polyethylene terephthalate (PET) fibers modified with glycidyl methacrylate grafting, hexamethylenediamine attachment and Cu2+ adsorption

Effective adsorption of bovine serum albumin by polyethylene terephthalate (PET) fibers modified with glycidyl methacrylate grafting, hexamethylenediamine attachment and Cu2+ adsorption

Grafting glycidyl methacrylate onto high-modulus carbon fiber by acid activation synergized with ionization radiation

The extreme chemical inertness of high-modulus carbon fiber (HMCF) makes its functionalization quite difficult. In this work, a new method was explored to grafted glycidyl methacrylate (GMA) onto the surface of HMCF combined acid activation with co-radiation grafting. Structural changes and surface morphologies were investigated in detail. GMA was successfully grafted on to HMCF after acid activation synergized with ionization radiation, and the grafting degree was calculated to be 22%. The O/C atom ratio, content of the oxygen-containing functional groups on the surface. After acid activation and grafting, the hydrophilicity is effectively improved, and it can be wetted by water with good dispersibility in water. The surface structure of the fiber became highly disordered after grafting GMA. Finally, the grafting mechanism was discussed. The carboxyl groups introduced by the acid activation should be responsible for the successful grafting of the HMCF. This work provides a new pathway to fulfill the modification of HMCF and will be beneficial for obtaining high performance HMCF composites.

Highly selective adsorption of Pt(IV) from spent catalyst by polyethyleneimine functionalized polyethylene/polypropylene non‐woven fabric

AbstractAiming at efficient recovery of platinum (Pt) from aqueous solution, the aminated polyethylene/polypropylene non‐woven fabric (PE/PP NWF) was synthesized via radiation grafting of glycidyl methacrylate (GMA), followed by ring‐opening reaction with polyethyleneimine (PEI). The effects of different parameters, including pH, sorption time, initial Pt(IV) concentration, competing ions and adsorbent dosage on the Pt(IV) adsorption performance were investigated by batch adsorption tests. A high Pt(IV) adsorption capacity of 485.0 mg g−1 (initial concentration: 263.5 mg L−1) was achieved, and the adsorption kinetics and isotherm conformed to the pseudo‐second‐order model and the Langmuir isotherm model, respectively. Moreover, the PEI functionalized PE/PP NWF exhibited excellent adsorption performance over the wide pH range (1–6), and also good selectivity for Pt(IV) over multiple coexisting metal cations (Ni, Cu, Co, Pb, Mg, and Zn). The recovery ratio of Pt from spent proton exchange membrane fuel cell (PEMFC) catalysts reached 89.7% after three cycles of regeneration.

Effect of Different Comonomers Added to Graft Copolymers on the Properties of PLA/PPC/PLA-g-GMA Blends

The melt-free radical grafting of glycidyl methacrylate (GMA) onto poly (lactic acid) (PLA) with styrene (St), α-methylstyrene (AMS), and epoxy resin (EP) as comonomers in a twin-screw extruder was used to prepare PLA-g-GMA graft copolymers. The prepared graft copolymers were then used as compatibilizers to prepare PLA/PPC/PLA-g-GMA blends by melt blending with PLA and polypropylene carbonate (PPC), respectively. The effects of different comonomers in the PLA-g-GMA graft copolymers on the thermal, rheological, optical, and mechanical properties and microstructure of the blends were studied. It was found that the grafting degree of PLA-g-GMA graft copolymers was increased to varying degrees after the introduction of comonomers in the PLA-g-GMA grafting reaction system. When St was used as the comonomer, the grafting degree of the PLA-g-GMA graft copolymer increased most significantly, from 0.8 to 1.6 phr. St as a comonomer also most improved the compatibility between PLA and PPC, and the haze of the blends was reduced while maintaining high transmittance. In addition, the PLA-g-GMA graft copolymer with the introduction of St as a comonomer significantly improved the impact toughness of the blends, while the thermal stability and tensile strength of the blends remained largely unchanged.

Purification of Adeno-Associated Virus (AAV) Serotype 2 from Spodoptera frugiperda (Sf9) Lysate by Chromatographic Nonwoven Membranes

The success of adeno-associated virus (AAV)-based therapeutics in gene therapy poses the need for rapid and efficient processes that can support the growing clinical demand. Nonwoven membranes represent an ideal tool for the future of virus purification: owing to their small fiber diameters and high porosity, they can operate at high flowrates while allowing full access to target viral particles without diffusional limitations. This study describes the development of nonwoven ion-exchange membrane adsorbents for the purification of AAV2 from an Sf9 cell lysate. A strong anion-exchange (AEX) membrane was developed by UV grafting glycidyl methacrylate on a polybutylene terephthalate nonwoven followed by functionalization with triethylamine (TEA), resulting in a quaternary amine ligand (AEX-TEA membrane). When operated in bind-and-elute mode at a pH higher than the pI of the capsids, this membrane exhibited a high AAV2 binding capacity (9.6 × 1013 vp·mL−1) at the residence time of 1 min, and outperformed commercial cast membranes by isolating AAV2 from an Sf9 lysate with high productivity (2.4 × 1013 capsids·mL−1·min−1) and logarithmic reduction value of host cell proteins (HCP LRV ~ 1.8). An iminodiacetic acid cation-exchange nonwoven (CEX-IDA membrane) was also prepared and utilized at a pH lower than the pI of capsids to purify AAV2 in a bind-and-elute mode, affording high capsid recovery and impurity removal by eluting with a salt gradient. To further increase purity, the CEX-IDA and AEX-TEA membranes were utilized in series to purify the AAV2 from the Sf9 cell lysate. This membrane-based chromatography process also achieved excellent DNA clearance and a recovery of infectivity higher that that reported using ion-exchange resin chromatography.

Green Preparation of Aminated Magnetic PMMA Microspheres via EB Irradiation and Its Highly Efficient Uptake of Ce(III).

The modification of polymers can significantly improve the ability to remove rare earth ions from wastewater, but so far few studies have focused on the irradiation-induced grafting method. In this study, a novel magnetic chelating resin for Ce(III) uptake was first synthesized by suspension polymerization of PMMA@Fe3O4 microspheres followed by irradiation-induced grafting of glycidyl methacrylate (GMA) and subsequent amination with polyethyleneimine (PEI). The FT-IR, SEM, TG and XRD characterization confirmed that we had successfully fabricated magnetic PMMA-PGMA-PEI microspheres with a well-defined structure and good thermal stability. The obtained adsorbent exhibited a satisfactory uptake capacity of 189.81 mg/g for Ce(III) at 318.15 K and an initial pH = 6.0. Additionally, the impact of the absorbed dose and GMA monomer concentration, pH, adsorbent dosage, contact time and initial concentration were thoroughly examined. The pseudo-second order and Langmuir models were able to describe the kinetics and isotherms of the adsorption process well. In addition, the thermodynamic data indicated that the uptake process was spontaneous and endothermic. Altogether, this research enriched the Ce(III) trapping agent and provided a new method for the removal rare earth pollutants.

A novel approach to efficient degradation of pesticide intermediate 2,4,5-trichlorophenol by co-immobilized laccase-acetosyringone biocatalyst

In this work, the industrial bacterial cellulose was functionalized by grafting glycidyl methacrylate and dopamine after regeneration with mixed ionic liquids of [AMIM]Cl and [Emim][OAc] and used as support for co-immobilizing laccase and acetosyringone molecule to achieve the recyclable solid spherical biocatalyst. It was found that the pesticide intermediate 2,4,5-trichlorophenol of 20 mg/L could be degraded effectively in water using the biocatalyst microspheres with the degradation efficiency of 98.3% at 30 ℃, which was much higher than that of the microspheres containing laccase without acetosyringone. The seed germination results showed that compared with untreated 2,4,5-trichlorophenol solution, the phytotoxicity of 2,4,5-trichlorophenol solution treated by the biocatalyst microspheres was significantly reduced, leading to the significantly higher seed germination rate. The solid biocatalyst maintained the high catalytic degradation activity for 2,4,5-trichlorophenol in the actual industrial water conditions of lake water, coal washing water, as well as coking wastewater. This study provided a green, safe and efficient approach to removing harmful 2,4,5-trichlorophenol from water.

Fabrication strategy for long‐chain branched polypropylene foams with high resilience and compressive strength

AbstractA flexible and controllable is proposed for fabricating long‐chain branched polypropylene (LCBPP) foams with high resilience and strength. LCBPP was blended with thermoplastic polyester elastomer (TPEE) using polyethylene octene elastomer grafted glycidyl methacrylate (POE‐g‐GMA) as a compatibilizer at different mass ratios, and the blends were then used to prepare foams at different temperatures by the supercritical CO2 batch foaming method. The foams were then tested for their compressive permanent strain and compressive strength. The results showed that introducing TPEE and POE‐g‐GMA increased the resilience. In particular, the permanent strain of the LCBPP/TPEE/POE‐g‐GMA foam at a ratio of 90/10/7 decreased from an initial 14.5% for the original LCBPP foam to 5% after five compression cycles. However, the compressive strength decreased from 65.59 to 39.82 kPa. Therefore, the foam density (ρ) and cell size (d) were adjusted to balance the resilience and strength. Increasing ρ/d from 0.32 to 3.10 increased the compressive strength significantly from 39.82 to 91.67 kPa while the permanent strain only increased 3.5%. Thus, the proposed strategy realized LCBPP foams with high resilience and compressive strength.

Removal of methyl orange and acid fuschin from aqueous solution by guanidinium functionalized cellulose prepared by radiation grafting

Dyeing wastewater released from dye-utilizing industries containing numerous hazardous dyes poses serious threat to environment and human beings, thus removal of dyes from wastewater is an important issue. In current work, guanidinium functionalized cellulose (GFC) was prepared by radiation emulsion grafting glycidyl methacrylate onto cellulose followed by further modification with guanidine hydrochloride. The radiation grafting and modification conditions were optimized. The GFC used for dyes removal was obtained with grafting yield of 238% at dose of 20 kGy and guanidinium group (%) of 16.49%. The adsorption behaviors towards methyl orange (MO) and acid fuschin (AF) were investigated. Adsorption kinetics was well described by pseudo-second-order kinetic mode. The adsorption isotherm was well fitted with Langmuir isotherm model. The adsorption capacity for MO and AF reached 63.25 mg/g and 120.4 mg/g, respectively. Therefore, the GFC exhibited excellent adsorption performance, which was applicable for MO and AF removal of water treatment.

Preparation and characterization of wood-to-wood bonding adhesive by glycidyl methacrylate grafting natural rubber

In this study, a wood adhesive obtained from natural rubber (NR) was prepared by grafting glycidyl methacrylate (GMA)/styrene (St) at a weight ratio of 9/1 (NR-g-GMA) with the aid of a cumene hydroperoxide (CHP)/tetraethylene pentamine (TEPA) initiating system. The effect of reaction time on lap shear strength and the adhesion mechanism were investigated. A water contact angle on NR-g-GMA decreased from 95° to 54°; attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy confirmed the introduction of oxirane rings and St onto the NR; subsequently a ring-opening reaction in basic media occurred. In addition, dynamic mechanical analysis (DMA) showed that the storage modulus (G‘) of NR-g-GMA increased, whereas the glass transition temperature (Tg) slightly shifted to lower temperature and the height of tan δ decreased as compared to NR. The lap shear strength of NR-g-GMAs increased with increasing reaction time together with the hydroxyl content due to the ring-opening reaction, whereas the percentage grafting efficiency and the carbonyl content decreased after 4 h of reaction time. X-ray photoelectron spectroscopy (XPS) and ATR-FTIR showed that C–H, CO, and OH groups were mainly chemical compositions of wood and NR-g-GMA adhesive. Therefore, we propose that adsorption and molecular interaction were the main mechanisms determining adhesive strength.

Reactive Extrusion Grafting of Glycidyl Methacrylate onto Low-Density and Recycled Polyethylene Using Supercritical Carbon Dioxide

Glycidyl methacrylate (GMA) was grafted onto (recycled) polyethylene (PE) to design a new adhesive with better mechanical properties compared to non-grafted PE. The effects of the amount of GMA, the amount of dicumyl peroxide (DCP) and the use of supercritical carbon dioxide (scCO2) in a reactive extrusion (REX) were evaluated based on the grafting degree and efficiency of the grafted samples. Generally speaking, higher amounts of GMA led to higher functionalization degrees (FD), whereas higher amounts of DCP resulted in a lower FD due to the occurrence of more unfavorable side reactions. The influence of scCO2 showed different outcomes for the two substrates used. Higher FDs were obtained for the low-density polyethylene (LDPE) samples while, by contrast, lower FDs were obtained for the recycled polyethylene (RPE) samples when using scCO2. Additionally, adjusting the screw speed and the temperature profile of the extruder to the half-life time of the radical initiator appeared to have the highest positive impact on the FD. According to the tensile tests, all the grafted samples can withstand higher stress levels, especially the grafted RPE, compared to the non-grafted samples.

Activation of inert polyethylene/polypropylene nonwoven fiber (NWF) by plasma-initiated grafting and amine functionalization of the grafts for Cu(II), Co(II), Cr(III), Cd(II) and Pb(II) removal

In this study, the emulsion graft polymerization of glycidyl methacrylate (GMA) by environmentally friendly plasma-induced technique onto nonwoven polyethylene-coated polypropylene (NWF) fiber and its functionalization with 4-aminobenzoic acid (PABA) were carried out as a novel adsorbent. The influence of plasma source, irradiation time and reaction parameters were studied by a systematic approach. For the grafting of GMA, the optimal plasma treatment conditions using Ar-plasma were found to be 0.2 mbar plasma pressure, 70-watt plasma power, and 120s plasma exposure time. Grafting reaction conditions onto plasma-treated NWF was 4% GMA concentration, 40 °C graft polymerization temperature, and 4 h grafting time. The PABA modification parameters of GMA-grafted NWF fiber have also been optimized for the first time by several solvents and kinetic studies. Epoxy ring in GMA-g-NWF structures (118 ±12% grafting degree) was opened and its modification with PABA was achieved and 81 ± 3% (2.15 mmol PABA/g polymer) conversion was obtained. The samples were characterized by FTIR, XPS, EDX, SEM, contact angle, and TGA techniques. The Cu(II), Co(II), Cr(III), Cd(II) and Pb(II) removal experiments were carried out by ICP-MS in batch mode as a function of pH, contact time, initial concentration and regeneration. Between pH 2–8 range, NWF fabric adsorbent is effective at pH 5 for heavy metal removal. The maximum adsorption capacities (qmax) were determined from Langmuir isotherm as 35.08 mg Cu(II)/ g adsorbent, 31.15 mg Co(II)/g adsorbent, 34.24 mg Cr(III)/g adsorbent, 51.81 mg Cd(II)/g adsorbent and 63.36 mg Pb(II)/g adsorbent, respectively at an initial feed concentration of 100 ppm, demonstrating the promising potential of the NWF fiber-based adsorbent to steadily and efficiently adsorb these toxic metal ions. The experimental data of heavy metals followed pseudo-second-order kinetic and the Langmuir adsorption models. The adsorbent material could be easily regenerated at least five cycles with a 3% HNO3 solution.

Highly selective adsorbent by gamma radiation-induced grafting of glycidyl methacrylate on polyacrylonitrile/polyurethane nanofiber: Evaluation of CO2 capture

In this paper, a new adsorbent was investigated for carbon dioxide adsorption from a combination of two polymers, industrial polyacrylic nitrile (PAN) and industrial polyurethane (PU). PAN/PU nanofibers were prepared by electrospinning and successfully bonded to Glycidyl methacrylate (GMA). After, amination was performed with ethanolamine (EA) to make a functional group. Dynamic CO2 adsorption experiments were performed in a fixed-bed column with a mixture of two CO2/N2 gases at a concentration of 5% CO2 at atmospheric pressure and ambient temperature. The results showed the highest adsorption capacity of 2.98 mmol/g for amination with ethanolamine (168.63% degree of amination, 30 kGy radiation dose and 167.92% degree of grafting). Satisfactory results were obtained by predicting and fitting the breakthrough curves of CO2 adsorption of experimental data with Bohart-Adams, Thomas, Yoon Nelson and Yan models. Also, four adsorption–desorption cycles at low temperatures have confirmed the applicability of this adsorbent.

Controlled Process of Radiation-Induced Grafting by Chemical Vapour Deposition for the Synthesis of Metal Adsorbent

Combination of high energy radiation and chemical vapour deposition in the grafting process for the synthesis of metal adsorbent was investigated. Radiation-induced grafting of glycidyl methacrylate onto kenaf fiber was performed in vapour phase to develop adsorbent for removal of aluminum from aqueous solution. Morphological changes of cross-section kenaf fiber was observed via scanning electron microscope and the thickness of co-monomer in the final graft co-polymer was determined. The comparison in cross-section morphology between ungrafted kenaf fibers and grafted kenaf fiber shows approximately 3.88 [μm] thick of additional grafted layer. The functionalization of the grafted fiber using imidazole was calculated grametrically and verified by elemental analysis. Imidazole has proven to be effective on the adsorption of aluminum ion. It was found that the adsorbent could remove more than 99% aluminum with the highest adsorption capacity of 4.93 [mg/g] at pH 4 and 60 minutes reaction time.