Mixed matrix membranes prepared from natural rubber/poly(vinyl alcohol) semi-interpenetrating polymer network (NR/PVA semi-IPN) incorporating with zeolite 4A for the pervaporation dehydration of water–ethanol mixtures

Amnuaypanich, Sittipong; Patthana, J.; Phinyocheep, Pranee

doi:10.1016/j.ces.2009.07.028

Cited by 83 publications

(36 citation statements)

References 46 publications

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“…This agrees with the high swelling values reported in literature [10]. MMMs have been reported to possess a reduced swelling behavior compared with pure polymer membranes, upon particle introduction [28]. As expected, the introduction of ETS-10 particles had an effect of crosslinking in the rubbery chitosan polymer chains, up to 10 wt.…”

Section: Membrane Characterizationsupporting

confidence: 82%

“…In this work, this is reflected in the decrease of the density of the membrane upon ETS-10 introduction (Table 1), since the volume occupied by water, or free volume, Vf, followed the same trend as the swelling degree. This may be attributed to the hydrophilicity that the ETS-10 nanoparticles impart to the MMMs, which accounts for the different behavior of ETS-10/CS MMMs compared with other MMM reported for water-ethanol pervaporative separation [28]. In this work, the water contact angle of the pure CS and 5 wt.…”

Section: Membrane Characterizationmentioning

confidence: 89%

See 1 more Smart Citation

Synthesis and Characterization of ETS-10/Chitosan Nanocomposite Membranes for Pervaporation

Casado-Coterillo

Andrés

Téllez

et al. 2014

Separation Science and Technology

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Section: Membrane Characterizationsupporting

confidence: 82%

Section: Membrane Characterizationmentioning

confidence: 89%

Synthesis and Characterization of ETS-10/Chitosan Nanocomposite Membranes for Pervaporation

Casado-Coterillo

Andrés

Téllez

et al. 2014

Separation Science and Technology

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“…Thermoplastic elastomeric blends of natural rubber with polystyrene, polyvinyl alcohol, chitosan, polyethylene etc. are reported in the literature [2][3][4][5]. The elasticity of rubber reduced by improving the plasticity was observed with the incorporation of thermoplastic materials.…”

Section: Introductionmentioning

confidence: 66%

Thermogravimetric and Swelling Studies on the Natural Rubber Based Super Elastomer

Rs¹,

Avadhani²,

Vijayakumar³

et al. 2017

IJIREM

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The Thermal stability and solvent transport properties of elastomeric blends of natural rubber and exudated resin of Ailanthus Malabaricum tree were studied in detail. The elastomeric blend samples have been prepared from solution casting technique. Benzene was used as a common solvent for both the constituent polymers to prepare the blends. The resulting material exhibits excellent elastic properties. Thermogravimetry was employed to analyze the thermal stability of natural rubber by the addition of resin. The temperatures at various weight losses for different samples were determined from Thermogravimetric curves. The activation energy of degradation was calculated from Horowitz Metzger equation. The addition of natural rubber improves the thermal stability of resin. The solvent transport properties of the resulting samples were studied in benzene. The combination of natural rubber and the resin exudated from Ailanthus Malabaricum tree can be used to prepare the elastomeric material with suitable properties for specific applications.

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“…The shortcomings of NR can be eliminated to a good degree by suitable grafting with chitosan, a rigid, semicrystalline polymer with a very high glass transition. Earlier, blends of NR with various natural biodegradable polymers such as starch, cellulose, poly(hydroxyalkanoate), poly(caprolactone), collagen, poly(lactide), poly(hydroxybutyrate) and synthetic biodegradable polymers such as poly(vinyl alcohol) and polyurethane have been reported [7][8][9][10][11][12][13][14][15]. Lertwattaneswari et al have reported the synthesis of bionanocomposite of natural rubber with chitosan via physical mixing and their results confirmed enhancement in surface roughness, stiffness and tensile strength [16].…”

Section: Introductionmentioning

confidence: 73%

A new route to polymeric materials derived from chitosan and natural rubber

Venkatanarasimhan

Dhamodharan

2015

Polym. Bull.

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In this work, the synthesis and characterization of a new polymer, natural rubber-g-chitosan, from biopolymers available in nature is reported. In this process, soft and amorphous natural rubber (NR) is converted into a relatively more dimensionally stable new polymer (glass transition temperature changes from -68 to ?94.5°C), with versatile solubility in a variety of common organic solvents. For this purpose, mild epoxidation of NR is carried out to provide a reactive handle for the grafting of chitosan. Thus, chitosan-grafted natural rubber with different chitosan loading have been synthesized and characterized. The characterization of the new polymers revealed that the grafting process resulted in enhanced glass transition temperature in comparison to NR, remarkable improvement in thermal stability in comparison to NR and chitosan and the much needed solubility for the chitosan component, which is otherwise insoluble in common organic solvents. The NR-gchitosan is fully amorphous in the solid state, similar to NR. These value-added characteristics promise the utility and processability of the newly synthesized materials in adhesives, packaging industries and in many other areas where natural rubber and chitosan are vitally employed.

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Mixed matrix membranes prepared from natural rubber/poly(vinyl alcohol) semi-interpenetrating polymer network (NR/PVA semi-IPN) incorporating with zeolite 4A for the pervaporation dehydration of water–ethanol mixtures

Cited by 83 publications

References 46 publications

Synthesis and Characterization of ETS-10/Chitosan Nanocomposite Membranes for Pervaporation

Synthesis and Characterization of ETS-10/Chitosan Nanocomposite Membranes for Pervaporation

Thermogravimetric and Swelling Studies on the Natural Rubber Based Super Elastomer

A new route to polymeric materials derived from chitosan and natural rubber

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