Polyacrylic acid pore-filled microporous membranes and their use in membrane-mediated synthesis of nanocrystalline ferrihydrite

Winnik, Françoise M.; Morneau, André; Mika, Alicja M.; Childs, Ronald F.; Roig, Anna; Molins, Elı́es; Ziolo, Ronald F.

doi:10.1139/cjc-76-1-10

Cited by 19 publications

(18 citation statements)

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“…In other words, the valve opened at lower pH and closed at higher pH. Winnik et al [5] fabricated poly(acrylic acid)-grafted membranes and found that there was one order of magnitude change in flux in the pH range of 3-6. This kind of pH-sensitive membrane has several potential applications in preparation of specific drug delivery system, such as development a pH-controlled drug release device.…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of poly(vinylidene fluoride)–poly(acrylic acid) pore-filled pH-sensitive membranes

Kang

Dickson

2007

Journal of Membrane Science

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Section: Introductionmentioning

confidence: 99%

Development and characterization of poly(vinylidene fluoride)–poly(acrylic acid) pore-filled pH-sensitive membranes

Kang

Dickson

2007

Journal of Membrane Science

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“…More recently, copolymers with functionalized N ‐substituted maleimides have been investigated as supports or templates of metallic particles,8 on the basis that inorganic nanoparticles embedded within a polymer matrix are suitable for a broad range of applications in catalysis,9, 10 magnetics11–13 and photonics 14, 15. One method to synthesize inorganic nanoparticles employs block copolymers functionalized with carboxylic acid groups that can easily form ionic complexes with metallic compounds 16–18. Most of the copolymers and block copolymers containing carboxylic acid functionalities are based on acrylic monomers16–20 (very flexible block copolymers) and only a few studies on non‐acrylic block copolymers with carboxylic acid groups have been reported 4, 5, 21…”

Section: Introductionmentioning

confidence: 99%

“…One method to synthesize inorganic nanoparticles employs block copolymers functionalized with carboxylic acid groups that can easily form ionic complexes with metallic compounds 16–18. Most of the copolymers and block copolymers containing carboxylic acid functionalities are based on acrylic monomers16–20 (very flexible block copolymers) and only a few studies on non‐acrylic block copolymers with carboxylic acid groups have been reported 4, 5, 21…”

Section: Introductionmentioning

confidence: 99%

Isothermal crystallization and spherulite structure of partially miscible polypropylene–linear low‐density polyethylene blends

Shanks

2001

J of Applied Polymer Sci

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ABSTRACT:Polypropylene (PP) was blended with a linear low-density polyethylene (LLDPE, containing 5% hexene comonomer) over a composition range of 10 -90% of PP. The crystallization and morphology of the PP-LLDPE blends were studied by differential scanning calorimetry (DSC), polarized optical microscopy with a hot stage (HSOM), and scanning electron microscopy (SEM). In particular, the isothermal crystallization of PP in molten LLDPE was investigated. It was observed that the crystallization and melting behavior of PP and LLDPE changed in the blends, indicating that there was some degree of miscibility between the PP and the LLDPE. A depression of the equilibrium melting temperature (T m 0 ) of PP in the blends with no more than 15% of PP confirmed that PP was miscible with LLDPE at and below 15% of PP. In addition, a drastic decrease in T m 0 from the 25% PP blend to the 20% blend led us to conclude that the miscible behavior between PP and LLDPE became favorable at a PP concentration of 20%. The optical microscopic images showed that, in the blends with 10 and 15% of PP, the PP crystallized as open-armed diffuse spherulites, similar to those in the miscible blends. In contrast, the PP crystallized in a phase-separated matrix or droplets with more than 25% of PP, when obvious phase separation occurred. The SEM image revealed that the PP lamella was able to penetrate the PP and LLDPE phase boundary and grow in the LLDPE phase. The above results displayed that the PP dissolved in the LLDPE, and, particularly, when the PP concentration was below 20%, the dissolution was substantial.

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“…Following this idea, composite membranes with good integrity can be prepared. In these cases, AA was kept in its acidic form, although its ionic form showing strong hydrophilicity was already investigated widely [31][32][33]. The chemical structure of the filling glycopolymer is illustrated in Fig.…”

Section: Preparation and Characterization Of The Glycopolymer-filled mentioning

confidence: 99%

Glycopolymer-filled microporous polypropylene membranes for pervaporation dehydration

Dai¹,

Wan²,

Xu³

2010

Journal of Membrane Science

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Polyacrylic acid pore-filled microporous membranes and their use in membrane-mediated synthesis of nanocrystalline ferrihydrite

Cited by 19 publications

References 0 publications

Development and characterization of poly(vinylidene fluoride)–poly(acrylic acid) pore-filled pH-sensitive membranes

Development and characterization of poly(vinylidene fluoride)–poly(acrylic acid) pore-filled pH-sensitive membranes

Isothermal crystallization and spherulite structure of partially miscible polypropylene–linear low‐density polyethylene blends

Glycopolymer-filled microporous polypropylene membranes for pervaporation dehydration

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