Polypropylene nonwoven fabrics with conformal grafting of poly(glycidyl methacrylate) for bioseparations

Zheng, Yong; Liu, Haiyan; Gurgel, Patrick V.; Carbonell, Ruben G.

doi:10.1016/j.memsci.2010.08.037

Cited by 51 publications

(49 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The significant intensification of the characteristic IR peaks for -CH 3 (1360 cm -1 ) and the appearance of the peak for CH in-plane bend (1430 cm -1 ) suggests the formation of hydrocarbon fragments on the fabric surface due to the presence of limonene (Zheng et al, 2010). Attributed to the adsorbed water molecules in pure cellulose, the intensification of the band at 1640 cm -1 in the microcapsule treated fabrics can be related to the carbonyl stretching of the secondary amide band (amide I) of the pure chitosan (Yan et al, 2013).…”

Section: Tablementioning

confidence: 99%

Properties and controlled release of chitosan microencapsulated limonene oil

Souza

Caldas

Tohidi

et al. 2014

Revista Brasileira de Farmacognosia

View full text Add to dashboard Cite

Chitosan Controlled release Essential oil Microcapsule Limonene A B S T R A C T Chitosan microcapsules containing limonene essential oil as active ingredient were prepared by coacervation using three different concentrations of NaOH (0.50, 1.00, 1.45 wt%) and fixed concentrations of chitosan and surfactant of 0.50 wt%. The produced microcapsules were fully characterized in their morphology and chemical composition, and the kinetic release analysis of the active ingredient was evaluated after deposition in a non-woven cellulose fabric. The concentration of 1.00 and 1.45 wt% clearly show the best results in terms of dimension and shape of the microcapsules as well as in the volatility results.However, at the concentration of 1 wt% a higher number of microcapsules were produced as confirmed by FTIR and EDS analysis. Free microcapsules are spherical in size with disperse diameters between 2 and 12 μm. Immobilized microcapsules showed sizes from 4 to 7 μm, a rough surface and loss of spherical shape with pore formation in the chitosan walls. SEM analysis confirms that at higher NaOH concentrations, the larger the size of the microcapsules. This technique shows that by tuning NaOH concentration it is possible to efficiently control the release rate of encapsulated active agents demonstrating great potential as insect repellent for textiles.

show abstract

Section: Tablementioning

confidence: 99%

Properties and controlled release of chitosan microencapsulated limonene oil

Souza

Caldas

Tohidi

et al. 2014

Revista Brasileira de Farmacognosia

View full text Add to dashboard Cite

show abstract

“…The slope of the curves is the permeability coefficient, which is equal to 0.95 × 10 −7 cm 2 and 1.51 × 10 −7 cm 2 for the 5-mm and 50-mm diameter columns, respectively. These obtained values are between one-and three-times greater than the literature values of membranes developed for similar purposes [35,61] and between one-and two-times greater than the values of columns packed with ion exchange beads [62,63]. The pressure flow curves can also be accounted for until the critical flow velocity is reached, when the pressure drop rises to an extreme value; however, this needs further investigation due to the limitation of system compatibility.…”

Section: Pressure Drop Measurementsmentioning

confidence: 72%

“…If µ 1 is plotted versus L/ 0 , the slope of the curve is porosity. This technique was previously utilized using small injections of differently-sized tracers that were applied to the packed column under nonbinding conditions [35,60]. In this work, acetone was commonly used to determine total porosity, and the globular protein, lactoferrin, can be used to measure the interstitial porosity of a column packed with the Q fibrous adsorbent.…”

Section: Pulse Analysis To Determine Porosity Measurementsmentioning

confidence: 99%

Chromatographic Characterization and Process Performance of Column-Packed Anion Exchange Fibrous Adsorbents for High Throughput and High Capacity Bioseparations

et al. 2015

View full text Add to dashboard Cite

Fibrous materials are prominent among novel chromatographic supports for the separation and purification of biomolecules. In this work, strong anion exchange, quaternary ammonium (Q) functional fibrous adsorbents were evaluated with regards to their physical and functional characteristics. A column packed with Q fibrous adsorbent illustrated the good column packing efficiency of theoretical plate height (H) values and higher permeability coefficients (>0.9 × 10 −7 cm 2 ) than commercial adsorbents. For pulse experiments with acetone and lactoferrin as tracers under nonbinding conditions, the total porosity (for acetone) and the interstitial porosity (for lactoferrin) measured 0.97 and 0.47, respectively. The total ionic capacity of the chemically-functionalized Q fiber was 0.51 mmol/mL. The results indicated that the Q fiber had a static binding capacity of 140 mg/mL and a dynamic binding capacity (DBC) of 76 mg/mL for bovine serum albumin (BSA) and showed a linearly-scalable factor (~110 mL) for a column volume with high capacity and high throughput. Furthermore, this adsorptive material had the ability to bind OPEN ACCESSProcesses 2015, 3 205 the high molecular weight protein, thyroglobulin, with a capacity of 6 mg/mL. This work demonstrated the column-packed Q fibrous adsorption system as a potential chromatography support that exhibits high capacity at higher flow rates.

show abstract

“…This may be an indication of the plasma induced changes and oxygen addition onto the fibres surface. The addition of the printed paste without MCs to the fabric surface (Figure 1-b) is evidenced by the presence of new peaks at 1370 cm −1 and 1450 cm −1 attributed to -CH 3 and -CH 2 hydrocarbons, respectively [23]. However, the intense peak at 1370 cm −1 as well as the new broad peaks appeared between 1000-1200 cm −1 may be also attributed to the C-O stretching of free and condensed C-OH groups since they show a significant increase in intensity after plasma treatment [24].…”

Section: Resultsmentioning

confidence: 99%

Plasma-assisted deposition of microcapsule containingAloe veraextract for cosmeto-textiles

Carmo

Zille

Souto

2017

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. Dielectric Barrier Discharge (DBD) atmospheric-pressure plasma was employed to enhance the deposition of commercial microcapsules (MCs) containing Aloe vera extract onto a cotton/polyester (50:50) fabric. DBD conditions were optimized in term of energy dosage and contact angle. The MCs were applied by padding and printing methods and the coatings were characterized in terms of SEM and FTIR. MCs display a spherical shape with size between 2 and 8 µm with an average wall thickness of 0.5 µm. The MCs applied by printing and pretreated with a plasma dosage of 1.6 kW m 2 min -1 showed the best results with an increased adhesion of 200% and significant penetration of MCs into the fibres network. Plasma printed fabric retained 230% more MCs than untreated fabric after 10 washing cycles. However, the coating resistance between unwashed and washed samples was only improved by 5%. Considering the fact that no binder or crosslinking agents were used, the DBD plasma-assisted deposition of MCs revealed to be a promising environmental safe and low cost coating technology.

show abstract

Polypropylene nonwoven fabrics with conformal grafting of poly(glycidyl methacrylate) for bioseparations

Cited by 51 publications

References 37 publications

Properties and controlled release of chitosan microencapsulated limonene oil

Properties and controlled release of chitosan microencapsulated limonene oil

Chromatographic Characterization and Process Performance of Column-Packed Anion Exchange Fibrous Adsorbents for High Throughput and High Capacity Bioseparations

Plasma-assisted deposition of microcapsule containingAloe veraextract for cosmeto-textiles

Contact Info

Product

Resources

About