Radiation-Grafting of Cotton-g-DMAEMA for Biomedical Applications

ABSTRACTThis work covers the design of stimuli-responsive membranes and their ever-expanding range of use. Stimuli-responsive membranes that change their physicochemical properties in response to changes in their environment were synthesized for biomedical application. Responsive cotton-g-[2-(dimethylamino) ethyl methacrylate] membranes were obtained using γ-rays by mutual irradiation (direct method). The effect of absorbed dose, dose rate, and monomer concentration on the grafting yield was determined. The grafted samples were verified by the FTIR-ATR, 1H and 13C HRMAS NMR and 13C CPMAS NMR spectroscopies; thermal properties were analyzed by TGA and DSC and the stimuli-responsive behavior was studied by DSC.

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Responsive filtration membranes by polymer self-assembly

TECHNOLOGY ◽

10.1142/s2339547816500096 ◽

2016 ◽

Vol 04 (04) ◽

pp. 217-228 ◽

Cited By ~ 14

Author(s):

Papatya Kaner ◽

Prity Bengani-Lutz ◽

Ilin Sadeghi ◽

Ayse Asatekin

Keyword(s):

Self Assembly ◽

Performance Parameters ◽

Stimuli Responsive ◽

Membrane Filters ◽

Filtration Membranes ◽

Chemical Manufacturing ◽

Responsive Membranes ◽

Responsive Behavior ◽

Scalable Methods ◽

External Stimuli

Membrane technologies are essential for water treatment, bioprocessing and chemical manufacturing. Stimuli-responsive membranes respond to changes in feed conditions (e.g., temperature, pH) or external stimuli (e.g., magnetic field, light) with a change in performance parameters (permeability, selectivity). This enables new functionalities such as tunable performance, self-cleaning and smart-valve behavior. Polymer self-assembly is a crucial tool for manufacturing such membranes using scalable methods, enabling easier commercialization. This review surveys approaches to impart stimuli responsive behavior to membrane filters using polymer self-assembly.

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Synthesis and pH-stimuli responsive research of gemini amine-oxide surfactants containing amides

RSC Advances ◽

10.1039/d0ra07363f ◽

2020 ◽

Vol 10 (72) ◽

pp. 44387-44396

Author(s):

Hanyu Chen ◽

Duojiao Fu ◽

Xiqin Zhou ◽

Hongqin Liu ◽

Baocai Xu

Keyword(s):

Aqueous Solution ◽

Amine Oxide ◽

Stimuli Responsive ◽

Responsive Behavior

The series of gemini amine-oxide surfactants with the formula CnH2n+1CONH(CH2)2N+O–(CH3)–(CH2)3–(CH3)N+O– (CH2)2NHCOCnH2n+1 (n = 11, 13, 15, and 17) have been synthesized, and their pH-stimuli responsive behavior in aqueous solution has been studied.

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Collagen Nanoparticles in Drug Delivery Systems and Tissue Engineering

Applied Sciences ◽

10.3390/app112311369 ◽

2021 ◽

Vol 11 (23) ◽

pp. 11369

Author(s):

Ashni Arun ◽

Pratyusha Malrautu ◽

Anindita Laha ◽

Hongrong Luo ◽

Seeram Ramakrishna

Keyword(s):

Drug Delivery ◽

Tissue Engineering ◽

Drug Delivery Systems ◽

Delivery Systems ◽

Drug Solubility ◽

Stimuli Responsive ◽

Preparation Methods ◽

Nanoparticle Preparation ◽

Responsive Behavior ◽

Reduced Toxicity

The versatile natural polymer, collagen, has gained vast attention in biomedicine. Due to its biocompatibility, biodegradability, weak antigenicity, biomimetics and well-known safety profile, it is widely used as a drug, protein and gene carrier, and as a scaffold matrix in tissue engineering. Nanoparticles develop favorable chemical and physical properties such as increased drug half-life, improved hydrophobic drug solubility and controlled and targeted drug release. Their reduced toxicity, controllable characteristics of scaffolds and stimuli-responsive behavior make them suitable in regenerative medicine and tissue engineering. Collagen associates and absorbs nanoparticles leading to significant impacts on their biological functioning in any biofluid. This review will discuss collagen nanoparticle preparation methods and their applications and developments in drug delivery systems and tissue engineering.

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Heterogeneous polyelectrolyte gels as stimuli-responsive membranes

Journal of Membrane Science ◽

10.1016/s0376-7388(98)00171-9 ◽

1998 ◽

Vol 148 (2) ◽

pp. 207-222 ◽

Cited By ~ 10

Author(s):

Josephine S Turner ◽

Yu-Ling Cheng

Keyword(s):

Stimuli Responsive ◽

Polyelectrolyte Gels ◽

Responsive Membranes

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Molecularly engineered switchable photo-responsive membrane in gas separation for environmental protection

Environmental Engineering Research ◽

10.4491/eer.2019.090 ◽

2019 ◽

Vol 25 (4) ◽

pp. 447-461 ◽

Cited By ~ 3

Author(s):

Aishah Rosli ◽

Siew Chun Low

Keyword(s):

Environmental Protection ◽

Gas Separation ◽

Energy Costs ◽

Stimuli Responsive ◽

Responsive Materials ◽

Separation Systems ◽

Non Invasive ◽

Responsive Membranes ◽

External Stimuli

In recent years, stimuli-responsive materials have garnered interest due to their ability to change properties when exposed to external stimuli, making it useful for various applications including gas separation. Light is a very attractive trigger for responsive materials due to its speedy and non-invasive nature as well as the potential to reduce energy costs significantly. Even though light is deemed as an appealing stimulus for the development of stimuli-responsive materials, this avenue has yet to be extensively researched, as evidenced by the fewer works done on the photo-responsive membranes. Of these, there are even less research done on photo-responsive materials for the purpose of gas separation, thus, we have collected the examples that answer both these criteria in this review. This review covers the utilisation of photo-responsive materials specifically for gas separation purposes. Photo-chromic units, their integration into gas separation systems, mechanism and research that have been done on the topic so far are discussed.

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