Controlled grafting of MMA onto cellulose and cellulose acetate

Routray, C R; Tosh, Biranchinarayan

doi:10.1007/s10570-012-9762-9

Cited by 21 publications

(9 citation statements)

References 32 publications

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“…From XRD analysis, it can be seen that diffraction pattern of a-cellulose appeared at 2u ¼ 15.79 and 22.28 with the crystallinity index of 74.28% (see Figure 2). This result agrees with the diffraction patterns of pure cellulose from Sigma Aldrich, [4] which appears at 2u ¼ 15. 9 and 22.4 .…”

Section: Resultssupporting

confidence: 89%

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Radiation Graft Copolymerization of Acrylic Acid onto Rice Straw Cellulose

Rahmawati

Suhartini

Budianto

2015

Macromolecular Symposia

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Summary: Isolation of a-cellulose from rice straw has been successfully carried out having 26.95% yield, with 74.28% crystallinity index. The a-cellulose is then chemically modified by grafting acrylic acid monomer onto cellulose using preirradiation graft copolymerization technique. The optimum condition for grafting is obtained at 30 kGy radiation doses, 10% monomer concentration, 60 C grafting temperature and 120 min reaction time, with 84.12% grafting average. The infrared spectroscopy showed a new absorption band at 1720 cm À1 in the modified cellulose, which can be attributed to the presence of carbonyl group of acrylic acid. FESEM imaging showed that the acrylic acid grafting leads to an increase in the roughness and width of the cellulose. The grafting process was found to increase final decomposition temperature of the fibers.

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Section: Resultssupporting

confidence: 89%

“…Finally, the cellulose matrix is decomposed into carbon residue. [4,13] From Figure 11, it can be seen that the decomposition temperature of cellulose-g-AA is higher than cellulose, therefore it can be concluded that cellulose-g-AA is having a greater thermal decomposition resistance compared to cellulose.…”

mentioning

confidence: 99%

Radiation Graft Copolymerization of Acrylic Acid onto Rice Straw Cellulose

Rahmawati

Suhartini

Budianto

2015

Macromolecular Symposia

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“…The CNCs displayed typical absorption bands such as OH stretching at 3336 cm -1 , CH stretching at 2897 cm -1 , and bound water at 1646 cm -1 (Fig. 2) (Routray and Tosh 2012;Tran et al 2016). After modification with MMA, the MMA-CNCs exhibited new bands, such as asymmetrical CH3 stretching at 2951 cm -1 , C=O stretching at 1704 cm -1 , asymmetric COO-stretching at 1538 cm -1 , and CH2 rocking at 774 cm -1 , which were assigned to the grafting of MMA onto CNCs and the polymerized MMA (Dai Prè et al 2013;Anžlovar et al 2016;Tran et al 2016).…”

Section: Characteristics Of the Mma-modified Cncmentioning

confidence: 99%

“…The modification of cellulose with hydrophobic monomers, such as methyl methacrylate (MMA), has been shown to improve the compatibility between cellulose and the photopolymer resin (Kedzior et al 2016). Cotton cellulose, bamboo cellulose, and nanofibrillated cellulose (NFC) were modified by the acrylic monomers in an aqueous solution via free radical reaction, and the resulting cellulosic materials were found to be more hydrophobic and thermally stable compared to the unmodified ones, and grafting with acrylic monomers resulted in no changes to the microstructure of cellulose materials (Littunen et al 2011;Wan et al 2011;Routray and Tosh 2012). The modified NFC and CNC were used as a reinforcement particles within a poly(methyl methacrylate) (PMMA) matrix to fabricate nanocomposites, and the interfacial adhesion between NFC/CNC and PMMA was improved (Littunen et al 2013;Kedzior et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Reinforcing 3D print methacrylate resin/cellulose nanocrystal composites: Effect of cellulose nanocrystal modification

Feng

Xie

et al. 2019

BioRes

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Cellulose nanocrystals (CNCs) were modified with methyl methacrylate (MMA) to improve the properties of the resulting three-dimensional (3D) stereolithography printed CNC/methacrylate (MA) resin composites. The dispersibility of the MMA-modified CNCs (MMA-CNCs) was substantially improved, as evidenced by the limited precipitation in the MA solution. Thermal gravimetry and differential scanning calorimetry measurements showed that the pyrolytic temperature of the MMA-CNC was 110 °C higher than that of the CNCs; the pyrolytic temperature and glass transition temperature of the resulting MMA-CNC/MA composites were higher than those of the CNC/MA. The tensile strength and modulus of the MMA-CNC/MA composites were improved by up to 38.3 MPa and 3.07 GPa, respectively, compared to those of the CNC/MA composites. These results demonstrated that the modification of CNC with MMA is a feasible approach to substantially improve the mechanical properties and thermal stability of the resulting MA-based composites.

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“…As an initiator, CAN leads to formation of free radicals during oxidation of C2 and C3 hydroxyl groups of anhydro-Dglucose of cellulose, which then initiates the graft polymerization of NIPAAm vinyl monomer ( Fig. 1) [19][20][21][22].…”

Section: Preparation Of Pnipaam-grafted Hfms By Free Radical Polymerimentioning

confidence: 99%