Preparation of permeability-controlled track membranes on the basis of ‘smart’ polymers

Shtanko, N.I.; Kabanov, V.Ya.; Apel, P.Yu.; Yoshida, Minoru; Vilenskii, A. I.

doi:10.1016/s0376-7388(00)00494-4

Cited by 75 publications

(28 citation statements)

References 8 publications

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“…Many studies have been published utilizing this thermo-sensitive behavior of PNIPAAm in fields such as drug delivery systems 17,18 and thermo-sensitive membranes [19][20][21] . PNIPAAm has been extensively studied under the hydrogel state as a polymeric matrix for use in biotechnology and bioengineering 22 , and has been found to be cell compatible 23 .…”

Section: Introductionmentioning

confidence: 99%

Bioartificial polymeric materials based on collagen and poly(N-isopropylacrylamide)

Mano

Silva

2007

Mat. Res.

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Films of collagen (CLG) and poly(N-isopropylacrylamide), PNIPAAm, were prepared by casting from water solutions. These bioartificial polymeric materials were studied to examine the influence of PNIPAAm content and glutaraldehyde vapor cross-linking on the thermal and biological stability of CLG. Mixtures, ranging from 20-80 wt% CLG composition, were cross-linked through exposure to glutaraldehyde vapors. Thermal and morphological properties of the films, cross-linked or not, were investigated by differential scanning calorimetry, thermogravimetry, and scanning electron microscopy, with the aim of evaluating miscibility, thermal stability, and interactions among the constituents. The experimental results indicated that the homopolymers are not thermodynamically compatible. However, there is good evidence that effective interactions, probably due to hydrogen bond formation, takes place between the constituents. These interactions are more evident on the samples that were not cross-linked. DSC studies revealed that PNIPAAm exerts a thermal stabilizing effect on uncross-linked CLG, while the cross-linking with glutaraldehyde affects only the biological polymer, preventing the interactions with PNIPAAm. SEM micrographs of the uncross-linked mixtures showed that the morphology, in all compositions studied, remains similar to the pure collagen. In the corresponding cross-linked samples, a more compact aggregation is observed although no appreciably changes can be seen.

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Section: Introductionmentioning

confidence: 99%

Bioartificial polymeric materials based on collagen and poly(N-isopropylacrylamide)

Mano

Silva

2007

Mat. Res.

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“…The XPS analysis of the grafted pNIPAM was in good agreement with the literature data. pNIPAM was confirmed to be grafted onto various polymer supports either by c-irradiation of polyethylene terephthalate (PET) immersed in a NIPAM solution or by plasma polymerization of sublimated NIPAM on silicium wafers [15,16]. The lack of C1s and O1s characteristic peaks of ester group at 289.0 eV and 533.1 eV in poly(N-isopropyl acrylamide-graft-vinyl alcohol) (pNIPAM-g-PVA) spectrum indicated that no polymerization of L-LA occurred when L-LA was in presence of NIPAM.…”

Section: 3mentioning

confidence: 99%

Improvement of the interfacial compatibility between cellulose and poly(l-lactide) films by plasma-induced grafting of l-lactide: The evaluation of the adhesive properties using a peel test

Couturaud

Baldo

Mas

et al. 2015

Journal of Colloid and Interface Science

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“…This method has been shown to control the reaction and to obtain high densities of surface-grafted polymer. 25 Several surface 'grafting from' techniques have been reported in the literature, including chemical grafting, 25 plasma, 24,26 radiation 13,19,27,28 and photoinduced grafting. 29,30 A previously reported plasma-induced grafting technique 24 was chosen for the grafting of PNIPAM to the PCTEPMs because it presented several advantages to incorporating the desired properties into the PC membrane.…”

Section: Synthesis Pathway To Incorporate Pnipam Into Pctepmsmentioning

confidence: 99%

Bioinspired synthesis of optically and thermally responsive nanoporous membranes

Morones‐Ramírez

2013

NPG Asia Mater

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The development of porous membranes that can rapidly change flow rates in response to external, noninvasive stimuli has broad technological applications for areas ranging from biomedical devices to architecture. Environmentally responsive membranes have a fundamental role in the development of devices used in chemical sensors, biological sorters, sequencing, separations, high-throughput medical devices and labs on a chip. The design and engineering of these responsive porous membranes have been achieved through the coupling of porous membranes with polymeric materials that can change their physical conformation in response to pressure, heat, pH or different chemical entities. Inspired by the phototropic growth of coleoptiles and the light-mediated mechanism that plants use to open their stomata, in this work, light-responsive porous membranes were engineered, mathematically modeled and synthesized. This biologically inspired approach led to a state-of-the-art design technique and a device that outperforms its natural counterpart and is capable of reversibly controlling flow rates from 0.001 to 0.035 ml s À1 cm À2 in less than a few minutes using the noninvasive stimulus of light. We envision that the polymeric responsive membranes and the platform synthesis technique employed in this manuscript for their fabrication could be utilized in a broad range of applications and will have a great impact on the fields of fluid handling, biomedical high-throughput devices, sensors, medicine and other fields of chemistry, biology and mechanical engineering.

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Preparation of permeability-controlled track membranes on the basis of ‘smart’ polymers

Cited by 75 publications

References 8 publications

Bioartificial polymeric materials based on collagen and poly(N-isopropylacrylamide)

Bioartificial polymeric materials based on collagen and poly(N-isopropylacrylamide)

Improvement of the interfacial compatibility between cellulose and poly(l-lactide) films by plasma-induced grafting of l-lactide: The evaluation of the adhesive properties using a peel test

Bioinspired synthesis of optically and thermally responsive nanoporous membranes

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